diff --git a/.gitignore b/.gitignore
index 1a35068..3f4fd02 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 node_modules/
-tmp/
+misc/coverage.html
 .vocrc
 v8.log
 perf.log
diff --git a/.npmignore b/.npmignore
index 19fb245..fb4bab2 100644
--- a/.npmignore
+++ b/.npmignore
@@ -1,7 +1,17 @@
-test/*.tsv
+test/
+misc/
 node_modules/
-tmp/
+misc/coverage.html
 .gitignore
+.jshintrc
+Makefile
+.npmignore
+.jscs.json
+.gitmodules
+.travis.yml
+.flowconfig
+bits/
 .vocrc
 v8.log
 perf.log
+ssf*.tgz
diff --git a/Makefile b/Makefile
index 6c5aac2..ed78f56 100755
--- a/Makefile
+++ b/Makefile
@@ -4,33 +4,57 @@ CMDS=bin/ssf.njs
 HTMLLINT=
 
 ULIB=$(shell echo $(LIB) | tr a-z A-Z)
+DEPS=$(sort $(wildcard bits/*.js))
 TARGET=$(LIB).js
+FLOWTARGET=$(LIB).flow.js
+FLOWAUX=$(patsubst %.js,%.flow.js,$(AUXTARGETS))
+AUXSCPTS=
+FLOWTGTS=$(TARGET) $(AUXTARGETS) $(AUXSCPTS)
+UGLIFYOPTS=--support-ie8
 
 ## Main Targets
 
+.PHONY: all
+all: $(TARGET) $(AUXTARGETS) $(AUXSCPTS) ## Build library and auxiliary scripts
+
+$(FLOWTGTS): %.js : %.flow.js
+	node -e 'process.stdout.write(require("fs").readFileSync("$<","utf8").replace(/^[ \t]*\/\*[:#][^*]*\*\/\s*(\n)?/gm,"").replace(/\/\*[:#][^*]*\*\//gm,""))' > $@
+
+$(FLOWTARGET): $(DEPS)
+	cat $^ | tr -d '\15\32' > $@
+
+bits/01_version.js: package.json
+	echo "$(ULIB).version = '"`grep version package.json | awk '{gsub(/[^0-9a-z\.-]/,"",$$2); print $$2}'`"';" > $@
+
+.PHONY: clean
+clean: ## Remove targets and build artifacts
+	rm -f $(TARGET) $(FLOWTARGET)
 
-.PHONY: ssf
-ssf: ssf.md
-	voc ssf.md
 
 ## Testing
 
 .PHONY: test mocha
 test mocha: ## Run test suite
-	npm test
+	mocha -R spec
 
+.PHONY: test_min
 test_min:
 	MINTEST=1 npm test
 
+.PHONY: travis
+travis: ## Run test suite with minimal output
+	mocha -R dot -t 30000
+
 ## Code Checking
 
 .PHONY: lint
-lint: ## Run jshint and jscs checks
-	@jshint --show-non-errors $(TARGET) test/
+lint: $(TARGET) $(AUXTARGETS) ## Run jshint and jscs checks
+	@jshint --show-non-errors $(TARGET) $(AUXTARGETS)
+	@jshint --show-non-errors test/
 	@jshint --show-non-errors $(CMDS)
 	@jshint --show-non-errors package.json
 	@jshint --show-non-errors --extract=always $(HTMLLINT)
-	@jscs $(TARGET)
+	@jscs $(TARGET) $(AUXTARGETS)
 
 .PHONY: flow
 flow: lint ## Run flow checker
@@ -43,7 +67,7 @@ cov: tmp/coverage.html ## Run coverage test
 cov_min:
 	MINTEST=1 make cov
 
-tmp/coverage.html: ssf
+misc/coverage.html: $(TARGET)
 	mocha --require blanket -R html-cov -t 20000 > $@
 
 .PHONY: full_coveralls
diff --git a/README.md b/README.md
index 76c597a..ae22e17 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,7 @@ type SSFDate = {
 }
 ```
 
+`SSF.is_date(fmt:string):boolean` returns `true` if `fmt` encodes a date format.
 
 ## License
 
diff --git a/bits/00_header.js b/bits/00_header.js
new file mode 100644
index 0000000..cd5b3e3
--- /dev/null
+++ b/bits/00_header.js
@@ -0,0 +1,4 @@
+/* ssf.js (C) 2013-present SheetJS -- http://sheetjs.com */
+/*jshint -W041 */
+var SSF = {};
+var make_ssf = function make_ssf(SSF){
diff --git a/bits/01_version.js b/bits/01_version.js
new file mode 100644
index 0000000..aa5adaa
--- /dev/null
+++ b/bits/01_version.js
@@ -0,0 +1 @@
+SSF.version = '0.9.0';
diff --git a/bits/02_utilities.js b/bits/02_utilities.js
new file mode 100644
index 0000000..f9d7b62
--- /dev/null
+++ b/bits/02_utilities.js
@@ -0,0 +1,10 @@
+function _strrev(x/*:string*/)/*:string*/ { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
+function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
+function pad0(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
+function pad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v;return t.length>=d?t:fill(' ',d-t.length)+t;}
+function rpad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:t+fill(' ',d-t.length);}
+function pad0r1(v/*:any*/,d/*:number*/)/*:string*/{var t=""+Math.round(v); return t.length>=d?t:fill('0',d-t.length)+t;}
+function pad0r2(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
+var p2_32 = Math.pow(2,32);
+function pad0r(v/*:any*/,d/*:number*/)/*:string*/{if(v>p2_32||v<-p2_32) return pad0r1(v,d); var i = Math.round(v); return pad0r2(i,d); }
+function isgeneral(s/*:string*/, i/*:?number*/)/*:boolean*/ { i = i || 0; return s.length >= 7 + i && (s.charCodeAt(i)|32) === 103 && (s.charCodeAt(i+1)|32) === 101 && (s.charCodeAt(i+2)|32) === 110 && (s.charCodeAt(i+3)|32) === 101 && (s.charCodeAt(i+4)|32) === 114 && (s.charCodeAt(i+5)|32) === 97 && (s.charCodeAt(i+6)|32) === 108; }
diff --git a/bits/10_opts.js b/bits/10_opts.js
new file mode 100644
index 0000000..fec7177
--- /dev/null
+++ b/bits/10_opts.js
@@ -0,0 +1,10 @@
+/* Options */
+var opts_fmt/*:Array<Array<any> >*/ = [
+	["date1904", 0],
+	["output", ""],
+	["WTF", false]
+];
+function fixopts(o){
+	for(var y = 0; y != opts_fmt.length; ++y) if(o[opts_fmt[y][0]]===undefined) o[opts_fmt[y][0]]=opts_fmt[y][1];
+}
+SSF.opts = opts_fmt;
diff --git a/bits/20_consts.js b/bits/20_consts.js
new file mode 100644
index 0000000..7586250
--- /dev/null
+++ b/bits/20_consts.js
@@ -0,0 +1,55 @@
+var table_fmt = {
+	/*::[*/0/*::]*/:  'General',
+	/*::[*/1/*::]*/:  '0',
+	/*::[*/2/*::]*/:  '0.00',
+	/*::[*/3/*::]*/:  '#,##0',
+	/*::[*/4/*::]*/:  '#,##0.00',
+	/*::[*/9/*::]*/:  '0%',
+	/*::[*/10/*::]*/: '0.00%',
+	/*::[*/11/*::]*/: '0.00E+00',
+	/*::[*/12/*::]*/: '# ?/?',
+	/*::[*/13/*::]*/: '# ??/??',
+	/*::[*/14/*::]*/: 'm/d/yy',
+	/*::[*/15/*::]*/: 'd-mmm-yy',
+	/*::[*/16/*::]*/: 'd-mmm',
+	/*::[*/17/*::]*/: 'mmm-yy',
+	/*::[*/18/*::]*/: 'h:mm AM/PM',
+	/*::[*/19/*::]*/: 'h:mm:ss AM/PM',
+	/*::[*/20/*::]*/: 'h:mm',
+	/*::[*/21/*::]*/: 'h:mm:ss',
+	/*::[*/22/*::]*/: 'm/d/yy h:mm',
+	/*::[*/37/*::]*/: '#,##0 ;(#,##0)',
+	/*::[*/38/*::]*/: '#,##0 ;[Red](#,##0)',
+	/*::[*/39/*::]*/: '#,##0.00;(#,##0.00)',
+	/*::[*/40/*::]*/: '#,##0.00;[Red](#,##0.00)',
+	/*::[*/45/*::]*/: 'mm:ss',
+	/*::[*/46/*::]*/: '[h]:mm:ss',
+	/*::[*/47/*::]*/: 'mmss.0',
+	/*::[*/48/*::]*/: '##0.0E+0',
+	/*::[*/49/*::]*/: '@',
+	/*::[*/56/*::]*/: '"上午/下午 "hh"時"mm"分"ss"秒 "',
+	/*::[*/65535/*::]*/: 'General'
+};
+var days/*:Array<Array<string> >*/ = [
+	['Sun', 'Sunday'],
+	['Mon', 'Monday'],
+	['Tue', 'Tuesday'],
+	['Wed', 'Wednesday'],
+	['Thu', 'Thursday'],
+	['Fri', 'Friday'],
+	['Sat', 'Saturday']
+];
+var months/*:Array<Array<string> >*/ = [
+	['J', 'Jan', 'January'],
+	['F', 'Feb', 'February'],
+	['M', 'Mar', 'March'],
+	['A', 'Apr', 'April'],
+	['M', 'May', 'May'],
+	['J', 'Jun', 'June'],
+	['J', 'Jul', 'July'],
+	['A', 'Aug', 'August'],
+	['S', 'Sep', 'September'],
+	['O', 'Oct', 'October'],
+	['N', 'Nov', 'November'],
+	['D', 'Dec', 'December']
+];
diff --git a/bits/30_frac.js b/bits/30_frac.js
new file mode 100644
index 0000000..dacffd0
--- /dev/null
+++ b/bits/30_frac.js
@@ -0,0 +1,22 @@
+function frac(x, D, mixed) {
+	var sgn = x < 0 ? -1 : 1;
+	var B = x * sgn;
+	var P_2 = 0, P_1 = 1, P = 0;
+	var Q_2 = 1, Q_1 = 0, Q = 0;
+	var A = Math.floor(B);
+	while(Q_1 < D) {
+		A = Math.floor(B);
+		P = A * P_1 + P_2;
+		Q = A * Q_1 + Q_2;
+		if((B - A) < 0.0000000005) break;
+		B = 1 / (B - A);
+		P_2 = P_1; P_1 = P;
+		Q_2 = Q_1; Q_1 = Q;
+	}
+	if(Q > D) { Q = Q_1; P = P_1; }
+	if(Q > D) { Q = Q_2; P = P_2; }
+	if(!mixed) return [0, sgn * P, Q];
+	if(Q===0) throw "Unexpected state: "+P+" "+P_1+" "+P_2+" "+Q+" "+Q_1+" "+Q_2;
+	var q = Math.floor(sgn * P/Q);
+	return [q, sgn*P - q*Q, Q];
+}
diff --git a/bits/40_general.js b/bits/40_general.js
new file mode 100644
index 0000000..340f20b
--- /dev/null
+++ b/bits/40_general.js
@@ -0,0 +1,42 @@
+function general_fmt_int(v/*:number*/, opts/*:?any*/)/*:string*/ { return ""+v; }
+SSF._general_int = general_fmt_int;
+var general_fmt_num = (function make_general_fmt_num() {
+var gnr1 = /\.(\d*[1-9])0+$/, gnr2 = /\.0*$/, gnr4 = /\.(\d*[1-9])0+/, gnr5 = /\.0*[Ee]/, gnr6 = /(E[+-])(\d)$/;
+function gfn2(v) {
+	var w = (v<0?12:11);
+	var o = gfn5(v.toFixed(12)); if(o.length <= w) return o;
+	o = v.toPrecision(10); if(o.length <= w) return o;
+	return v.toExponential(5);
+}
+function gfn3(v) {
+	var o = v.toFixed(11).replace(gnr1,".$1");
+	if(o.length > (v<0?12:11)) o = v.toPrecision(6);
+	return o;
+}
+function gfn4(o) {
+	for(var i = 0; i != o.length; ++i) if((o.charCodeAt(i) | 0x20) === 101) return o.replace(gnr4,".$1").replace(gnr5,"E").replace("e","E").replace(gnr6,"$10$2");
+	return o;
+}
+function gfn5(o) {
+	//for(var i = 0; i != o.length; ++i) if(o.charCodeAt(i) === 46) return o.replace(gnr2,"").replace(gnr1,".$1");
+	//return o;
+	return o.indexOf(".") > -1 ? o.replace(gnr2,"").replace(gnr1,".$1") : o;
+}
+return function general_fmt_num(v/*:number*/, opts/*:?any*/)/*:string*/ {
+	var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
+	if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
+	else if(Math.abs(V) <= 9) o = gfn2(v);
+	else if(V === 10) o = v.toFixed(10).substr(0,12);
+	else o = gfn3(v);
+	return gfn5(gfn4(o));
+};})();
+SSF._general_num = general_fmt_num;
+function general_fmt(v/*:any*/, opts/*:?any*/) {
+	switch(typeof v) {
+		case 'string': return v;
+		case 'boolean': return v ? "TRUE" : "FALSE";
+		case 'number': return (v|0) === v ? general_fmt_int(v, opts) : general_fmt_num(v, opts);
+	}
+	throw new Error("unsupported value in General format: " + v);
+}
+SSF._general = general_fmt;
diff --git a/bits/45_hijri.js b/bits/45_hijri.js
new file mode 100644
index 0000000..939b6c9
--- /dev/null
+++ b/bits/45_hijri.js
@@ -0,0 +1 @@
+function fix_hijri(date, o) { return 0; }
diff --git a/bits/50_date.js b/bits/50_date.js
new file mode 100644
index 0000000..3a15080
--- /dev/null
+++ b/bits/50_date.js
@@ -0,0 +1,103 @@
+function parse_date_code(v/*:number*/,opts/*:?any*/,b2/*:?boolean*/) {
+	if(v > 2958465 || v < 0) return null;
+	var date = (v|0), time = Math.floor(86400 * (v - date)), dow=0;
+	var dout=[];
+	var out={D:date, T:time, u:86400*(v-date)-time,y:0,m:0,d:0,H:0,M:0,S:0,q:0};
+	if(Math.abs(out.u) < 1e-6) out.u = 0;
+	fixopts(opts != null ? opts : (opts=[]));
+	if(opts.date1904) date += 1462;
+	if(out.u > 0.999) {
+		out.u = 0;
+		if(++time == 86400) { time = 0; ++date; }
+	}
+	if(date === 60) {dout = b2 ? [1317,10,29] : [1900,2,29]; dow=3;}
+	else if(date === 0) {dout = b2 ? [1317,8,29] : [1900,1,0]; dow=6;}
+	else {
+		if(date > 60) --date;
+		/* 1 = Jan 1 1900 in Gregorian */
+		var d = new Date(1900, 0, 1);
+		d.setDate(d.getDate() + date - 1);
+		dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
+		dow = d.getDay();
+		if(date < 60) dow = (dow + 6) % 7;
+		if(b2) dow = fix_hijri(d, dout);
+	}
+	out.y = dout[0]; out.m = dout[1]; out.d = dout[2];
+	out.S = time % 60; time = Math.floor(time / 60);
+	out.M = time % 60; time = Math.floor(time / 60);
+	out.H = time;
+	out.q = dow;
+	return out;
+}
+SSF.parse_date_code = parse_date_code;
+/*jshint -W086 */
+function write_date(type/*:number*/, fmt/*:string*/, val, ss0/*:?number*/)/*:string*/ {
+	var o="", ss=0, tt=0, y = val.y, out, outl = 0;
+	switch(type) {
+		case 98: /* 'b' buddhist year */
+			y = val.y + 543;
+			/* falls through */
+		case 121: /* 'y' year */
+		switch(fmt.length) {
+			case 1: case 2: out = y % 100; outl = 2; break;
+			default: out = y % 10000; outl = 4; break;
+		} break;
+		case 109: /* 'm' month */
+		switch(fmt.length) {
+			case 1: case 2: out = val.m; outl = fmt.length; break;
+			case 3: return months[val.m-1][1];
+			case 5: return months[val.m-1][0];
+			default: return months[val.m-1][2];
+		} break;
+		case 100: /* 'd' day */
+		switch(fmt.length) {
+			case 1: case 2: out = val.d; outl = fmt.length; break;
+			case 3: return days[val.q][0];
+			default: return days[val.q][1];
+		} break;
+		case 104: /* 'h' 12-hour */
+		switch(fmt.length) {
+			case 1: case 2: out = 1+(val.H+11)%12; outl = fmt.length; break;
+			default: throw 'bad hour format: ' + fmt;
+		} break;
+		case 72: /* 'H' 24-hour */
+		switch(fmt.length) {
+			case 1: case 2: out = val.H; outl = fmt.length; break;
+			default: throw 'bad hour format: ' + fmt;
+		} break;
+		case 77: /* 'M' minutes */
+		switch(fmt.length) {
+			case 1: case 2: out = val.M; outl = fmt.length; break;
+			default: throw 'bad minute format: ' + fmt;
+		} break;
+		case 115: /* 's' seconds */
+		if(val.u === 0) switch(fmt) {
+			case 's': case 'ss': return pad0(val.S, fmt.length);
+			case '.0': case '.00': case '.000':
+		}
+		switch(fmt) {
+			case 's': case 'ss': case '.0': case '.00': case '.000':
+				/*::if(!ss0) ss0 = 0; */
+				if(ss0 >= 2) tt = ss0 === 3 ? 1000 : 100;
+				else tt = ss0 === 1 ? 10 : 1;
+				ss = Math.round((tt)*(val.S + val.u));
+				if(ss >= 60*tt) ss = 0;
+				if(fmt === 's') return ss === 0 ? "0" : ""+ss/tt;
+				o = pad0(ss,2 + ss0);
+				if(fmt === 'ss') return o.substr(0,2);
+				return "." + o.substr(2,fmt.length-1);
+			default: throw 'bad second format: ' + fmt;
+		}
+		case 90: /* 'Z' absolute time */
+		switch(fmt) {
+			case '[h]': case '[hh]': out = val.D*24+val.H; break;
+			case '[m]': case '[mm]': out = (val.D*24+val.H)*60+val.M; break;
+			case '[s]': case '[ss]': out = ((val.D*24+val.H)*60+val.M)*60+Math.round(val.S+val.u); break;
+			default: throw 'bad abstime format: ' + fmt;
+		} outl = fmt.length === 3 ? 1 : 2; break;
+		case 101: /* 'e' era */
+			out = y; outl = 1;
+	}
+	if(outl > 0) return pad0(out, outl); else return "";
+}
+/*jshint +W086 */
diff --git a/bits/56_commaify.js b/bits/56_commaify.js
new file mode 100644
index 0000000..249e1f3
--- /dev/null
+++ b/bits/56_commaify.js
@@ -0,0 +1,6 @@
+function commaify(s/*:string*/)/*:string*/ {
+	if(s.length <= 3) return s;
+	var j = (s.length % 3), o = s.substr(0,j);
+	for(; j!=s.length; j+=3) o+=(o.length > 0 ? "," : "") + s.substr(j,3);
+	return o;
+}
diff --git a/bits/57_numhead.js b/bits/57_numhead.js
new file mode 100644
index 0000000..6452285
--- /dev/null
+++ b/bits/57_numhead.js
@@ -0,0 +1 @@
+var write_num = (function make_write_num(){
diff --git a/bits/59_numhelp.js b/bits/59_numhelp.js
new file mode 100644
index 0000000..139427c
--- /dev/null
+++ b/bits/59_numhelp.js
@@ -0,0 +1,5 @@
+var pct1 = /%/g;
+function write_num_pct(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
+	return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
+}
diff --git a/bits/60_number.js b/bits/60_number.js
new file mode 100644
index 0000000..3805108
--- /dev/null
+++ b/bits/60_number.js
@@ -0,0 +1,265 @@
+function write_num_cm(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var idx = fmt.length - 1;
+	while(fmt.charCodeAt(idx-1) === 44) --idx;
+	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
+}
+function write_num_exp(fmt/*:string*/, val/*:number*/)/*:string*/{
+	var o/*:string*/;
+	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
+	if(fmt.match(/^#+0.0E\+0$/)) {
+		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
+		var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
+		if(ee < 0) ee += period;
+		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
+		if(o.indexOf("e") === -1) {
+			var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
+			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
+			else o += "E+" + (fakee - ee);
+			while(o.substr(0,2) === "0.") {
+				o = o.charAt(0) + o.substr(2,period) + "." + o.substr(2+period);
+				o = o.replace(/^0+([1-9])/,"$1").replace(/^0+\./,"0.");
+			}
+			o = o.replace(/\+-/,"-");
+		}
+		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
+	} else o = val.toExponential(idx);
+	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
+	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
+	return o.replace("e","E");
+}
+var frac1 = /# (\?+)( ?)\/( ?)(\d+)/;
+function write_num_f1(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
+	var den = parseInt(r[4],10), rr = Math.round(aval * den), base = Math.floor(rr/den);
+	var myn = (rr - base*den), myd = den;
+	return sign + (base === 0 ? "" : ""+base) + " " + (myn === 0 ? fill(" ", r[1].length + 1 + r[4].length) : pad_(myn,r[1].length) + r[2] + "/" + r[3] + pad0(myd,r[4].length));
+}
+function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
+	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
+}
+var dec1 = /^#*0*\.(0+)/;
+var closeparen = /\).*[0#]/;
+var phone = /\(###\) ###\\?-####/;
+function hashq(str/*:string*/)/*:string*/ {
+	var o = "", cc;
+	for(var i = 0; i != str.length; ++i) switch((cc=str.charCodeAt(i))) {
+		case 35: break;
+		case 63: o+= " "; break;
+		case 48: o+= "0"; break;
+		default: o+= String.fromCharCode(cc);
+	}
+	return o;
+}
+function rnd(val/*:number*/, d/*:number*/)/*:string*/ { var dd = Math.pow(10,d); return ""+(Math.round(val * dd)/dd); }
+function dec(val/*:number*/, d/*:number*/)/*:number*/ {
+		if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
+				return 0;
+		}
+		return Math.round((val-Math.floor(val))*Math.pow(10,d));
+}
+function carry(val/*:number*/, d/*:number*/)/*:number*/ {
+		if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
+				return 1;
+		}
+		return 0;
+}
+function flr(val/*:number*/)/*:string*/ { if(val < 2147483647 && val > -2147483648) return ""+(val >= 0 ? (val|0) : (val-1|0)); return ""+Math.floor(val); }
+function write_num_flt(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
+	if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
+		var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
+		if(val >= 0) return write_num_flt('n', ffmt, val);
+		return '(' + write_num_flt('n', ffmt, -val) + ')';
+	}
+	if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm(type, fmt, val);
+	if(fmt.indexOf('%') !== -1) return write_num_pct(type, fmt, val);
+	if(fmt.indexOf('E') !== -1) return write_num_exp(fmt, val);
+	if(fmt.charCodeAt(0) === 36) return "$"+write_num_flt(type,fmt.substr(fmt[1]==' '?2:1),val);
+	var o;
+	var r/*:?Array<string>*/, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
+	if(fmt.match(/^00+$/)) return sign + pad0r(aval,fmt.length);
+	if(fmt.match(/^[#?]+$/)) {
+		o = pad0r(val,0); if(o === "0") o = "";
+		return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(frac1))) return write_num_f1(r, aval, sign);
+	if(fmt.match(/^#+0+$/)) return sign + pad0r(aval,fmt.length - fmt.indexOf("0"));
+	if((r = fmt.match(dec1))) {
+		// $FlowIgnore
+		o = rnd(val, r[1].length).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]).replace(/\.(\d*)$/,function($$, $1) { return "." + $1 + fill("0", /*::(*/r/*::||[""])*/[1].length-$1.length); });
+		return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
+	}
+	fmt = fmt.replace(/^#+([0.])/, "$1");
+	if((r = fmt.match(/^(0*)\.(#*)$/))) {
+		return sign + rnd(aval, r[2].length).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
+	}
+	if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify(pad0r(aval,0));
+	if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(""+(Math.floor(val) + carry(val, r[1].length))) + "." + pad0(dec(val, r[1].length),r[1].length);
+	}
+	if((r = fmt.match(/^#,#*,#0/))) return write_num_flt(type,fmt.replace(/^#,#*,/,""),val);
+	if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
+		o = _strrev(write_num_flt(type, fmt.replace(/[\\-]/g,""), val));
+		ri = 0;
+		return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
+	}
+	if(fmt.match(phone)) {
+		o = write_num_flt(type, "##########", val);
+		return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
+	}
+	var oa = "";
+	if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(/*::String(*/r[4]/*::)*/.length,7);
+		ff = frac(aval, Math.pow(10,ri)-1, false);
+		o = "" + sign;
+		oa = write_num("n", /*::String(*/r[1]/*::)*/, ff[1]);
+		if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
+		o += oa + /*::String(*/r[2]/*::)*/ + "/" + /*::String(*/r[3]/*::)*/;
+		oa = rpad_(ff[2],ri);
+		if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
+		o += oa;
+		return o;
+	}
+	if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(Math.max(r[1].length, r[4].length),7);
+		ff = frac(aval, Math.pow(10,ri)-1, true);
+		return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
+	}
+	if((r = fmt.match(/^[#0?]+$/))) {
+		o = pad0r(val, 0);
+		if(fmt.length <= o.length) return o;
+		return hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(/^([#0?]+)\.([#0]+)$/))) {
+		o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
+		ri = o.indexOf(".");
+		var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
+		return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
+	}
+	if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
+		ri = dec(val, r[1].length);
+		return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(flr(val)).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(ri,r[1].length);
+	}
+	switch(fmt) {
+		case "#,###": var x = commaify(pad0r(aval,0)); return x !== "0" ? sign + x : "";
+		default:
+	}
+	throw new Error("unsupported format |" + fmt + "|");
+}
+function write_num_cm2(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var idx = fmt.length - 1;
+	while(fmt.charCodeAt(idx-1) === 44) --idx;
+	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
+}
+function write_num_pct2(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
+	return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
+}
+function write_num_exp2(fmt/*:string*/, val/*:number*/)/*:string*/{
+	var o/*:string*/;
+	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
+	if(fmt.match(/^#+0.0E\+0$/)) {
+		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
+		var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
+		if(ee < 0) ee += period;
+		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
+		if(!o.match(/[Ee]/)) {
+			var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
+			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
+			else o += "E+" + (fakee - ee);
+			o = o.replace(/\+-/,"-");
+		}
+		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
+	} else o = val.toExponential(idx);
+	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
+	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
+	return o.replace("e","E");
+}
+function write_num_int(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
+	if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
+		var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
+		if(val >= 0) return write_num_int('n', ffmt, val);
+		return '(' + write_num_int('n', ffmt, -val) + ')';
+	}
+	if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm2(type, fmt, val);
+	if(fmt.indexOf('%') !== -1) return write_num_pct2(type, fmt, val);
+	if(fmt.indexOf('E') !== -1) return write_num_exp2(fmt, val);
+	if(fmt.charCodeAt(0) === 36) return "$"+write_num_int(type,fmt.substr(fmt[1]==' '?2:1),val);
+	var o;
+	var r, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
+	if(fmt.match(/^00+$/)) return sign + pad0(aval,fmt.length);
+	if(fmt.match(/^[#?]+$/)) {
+		o = (""+val); if(val === 0) o = "";
+		return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(frac1))) return write_num_f2(r, aval, sign);
+	if(fmt.match(/^#+0+$/)) return sign + pad0(aval,fmt.length - fmt.indexOf("0"));
+	if((r = fmt.match(dec1))) {
+		/*:: if(!Array.isArray(r)) throw "unreachable"; */
+		// $FlowIgnore
+		o = (""+val).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]);
+		// $FlowIgnore
+		o = o.replace(/\.(\d*)$/,function($$, $1) {
+		/*:: if(!Array.isArray(r)) throw "unreachable"; */
+		// $FlowIgnore
+			return "." + $1 + fill("0", r[1].length-$1.length); });
+		// $FlowIgnore
+		return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
+	}
+	fmt = fmt.replace(/^#+([0.])/, "$1");
+	if((r = fmt.match(/^(0*)\.(#*)$/))) {
+		return sign + (""+aval).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
+	}
+	if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify((""+aval));
+	if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify((""+val)) + "." + fill('0',r[1].length);
+	}
+	if((r = fmt.match(/^#,#*,#0/))) return write_num_int(type,fmt.replace(/^#,#*,/,""),val);
+	if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
+		o = _strrev(write_num_int(type, fmt.replace(/[\\-]/g,""), val));
+		ri = 0;
+		return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
+	}
+	if(fmt.match(phone)) {
+		o = write_num_int(type, "##########", val);
+		return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
+	}
+	var oa = "";
+	if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(r[4].length,7);
+		ff = frac(aval, Math.pow(10,ri)-1, false);
+		o = "" + sign;
+		oa = write_num("n", r[1], ff[1]);
+		if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
+		o += oa + r[2] + "/" + r[3];
+		oa = rpad_(ff[2],ri);
+		if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
+		o += oa;
+		return o;
+	}
+	if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(Math.max(r[1].length, r[4].length),7);
+		ff = frac(aval, Math.pow(10,ri)-1, true);
+		return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
+	}
+	if((r = fmt.match(/^[#0?]+$/))) {
+		o = "" + val;
+		if(fmt.length <= o.length) return o;
+		return hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(/^([#0]+)\.([#0]+)$/))) {
+		o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
+		ri = o.indexOf(".");
+		var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
+		return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
+	}
+	if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify(""+val).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(0,r[1].length);
+	}
+	switch(fmt) {
+		case "#,###": var x = commaify(""+aval); return x !== "0" ? sign + x : "";
+		default:
+	}
+	throw new Error("unsupported format |" + fmt + "|");
+}
+return function write_num(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
+	return (val|0) === val ? write_num_int(type, fmt, val) : write_num_flt(type, fmt, val);
+};})();
diff --git a/bits/80_split.js b/bits/80_split.js
new file mode 100644
index 0000000..20056ae
--- /dev/null
+++ b/bits/80_split.js
@@ -0,0 +1,17 @@
+function split_fmt(fmt/*:string*/)/*:Array<string>*/ {
+	var out/*:Array<string>*/ = [];
+	var in_str = false, cc;
+	for(var i = 0, j = 0; i < fmt.length; ++i) switch((cc=fmt.charCodeAt(i))) {
+		case 34: /* '"' */
+			in_str = !in_str; break;
+		case 95: case 42: case 92: /* '_' '*' '\\' */
+			++i; break;
+		case 59: /* ';' */
+			out[out.length] = fmt.substr(j,i-j);
+			j = i+1;
+	}
+	out[out.length] = fmt.substr(j);
+	if(in_str === true) throw new Error("Format |" + fmt + "| unterminated string ");
+	return out;
+}
+SSF._split = split_fmt;
diff --git a/bits/81_fmttype.js b/bits/81_fmttype.js
new file mode 100644
index 0000000..30e608c
--- /dev/null
+++ b/bits/81_fmttype.js
@@ -0,0 +1,42 @@
+var abstime = /\[[HhMmSs]*\]/;
+function fmt_is_date(fmt/*:string*/)/*:boolean*/ {
+	var i = 0, cc = 0, c = "", o = "";
+	while(i < fmt.length) {
+		switch((c = fmt.charAt(i))) {
+			case 'G': if(isgeneral(fmt, i)) i+= 6; i++; break;
+			case '"': for(;(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) ++i; ++i; break;
+			case '\\': i+=2; break;
+			case '_': i+=2; break;
+			case '@': ++i; break;
+			case 'B': case 'b':
+				if(fmt.charAt(i+1) === "1" || fmt.charAt(i+1) === "2") return true;
+				/* falls through */
+			case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
+				/* falls through */
+			case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g': return true;
+			case 'A':
+				if(fmt.substr(i, 3) === "A/P") return true;
+				if(fmt.substr(i, 5) === "AM/PM") return true;
+				++i; break;
+			case '[':
+				o = c;
+				while(fmt.charAt(i++) !== ']' && i < fmt.length) o += fmt.charAt(i);
+				if(o.match(abstime)) return true;
+				break;
+			case '.':
+				/* falls through */
+			case '0': case '#':
+				while(i < fmt.length && ("0#?.,E+-%".indexOf(c=fmt.charAt(++i)) > -1 || c=='\\' && fmt.charAt(i+1) == "-" && "0#".indexOf(fmt.charAt(i+2))>-1));
+				break;
+			case '?': while(fmt.charAt(++i) === c); break;
+			case '*': ++i; if(fmt.charAt(i) == ' ' || fmt.charAt(i) == '*') ++i; break;
+			case '(': case ')': ++i; break;
+			case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
+				while(i < fmt.length && "0123456789".indexOf(fmt.charAt(++i)) > -1); break;
+			case ' ': ++i; break;
+			default: ++i; break;
+		}
+	}
+	return false;
+}
+SSF.is_date = fmt_is_date;
diff --git a/bits/82_eval.js b/bits/82_eval.js
new file mode 100644
index 0000000..138e7e2
--- /dev/null
+++ b/bits/82_eval.js
@@ -0,0 +1,189 @@
+function eval_fmt(fmt/*:string*/, v/*:any*/, opts/*:any*/, flen/*:number*/) {
+	var out = [], o = "", i = 0, c = "", lst='t', q, dt, j, cc;
+	var hr='H';
+	/* Tokenize */
+	while(i < fmt.length) {
+		switch((c = fmt.charAt(i))) {
+			case 'G': /* General */
+				if(!isgeneral(fmt, i)) throw new Error('unrecognized character ' + c + ' in ' +fmt);
+				out[out.length] = {t:'G', v:'General'}; i+=7; break;
+			case '"': /* Literal text */
+				for(o="";(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) o += String.fromCharCode(cc);
+				out[out.length] = {t:'t', v:o}; ++i; break;
+			case '\\': var w = fmt.charAt(++i), t = (w === "(" || w === ")") ? w : 't';
+				out[out.length] = {t:t, v:w}; ++i; break;
+			case '_': out[out.length] = {t:'t', v:" "}; i+=2; break;
+			case '@': /* Text Placeholder */
+				out[out.length] = {t:'T', v:v}; ++i; break;
+			case 'B': case 'b':
+				if(fmt.charAt(i+1) === "1" || fmt.charAt(i+1) === "2") {
+					if(dt==null) { dt=parse_date_code(v, opts, fmt.charAt(i+1) === "2"); if(dt==null) return ""; }
+					out[out.length] = {t:'X', v:fmt.substr(i,2)}; lst = c; i+=2; break;
+				}
+				/* falls through */
+			case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
+				c = c.toLowerCase();
+				/* falls through */
+			case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g':
+				if(v < 0) return "";
+				if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
+				o = c; while(++i<fmt.length && fmt.charAt(i).toLowerCase() === c) o+=c;
+				if(c === 'm' && lst.toLowerCase() === 'h') c = 'M'; /* m = minute */
+				if(c === 'h') c = hr;
+				out[out.length] = {t:c, v:o}; lst = c; break;
+			case 'A':
+				q={t:c, v:"A"};
+				if(dt==null) dt=parse_date_code(v, opts);
+				if(fmt.substr(i, 3) === "A/P") { if(dt!=null) q.v = dt.H >= 12 ? "P" : "A"; q.t = 'T'; hr='h';i+=3;}
+				else if(fmt.substr(i,5) === "AM/PM") { if(dt!=null) q.v = dt.H >= 12 ? "PM" : "AM"; q.t = 'T'; i+=5; hr='h'; }
+				else { q.t = "t"; ++i; }
+				if(dt==null && q.t === 'T') return "";
+				out[out.length] = q; lst = c; break;
+			case '[':
+				o = c;
+				while(fmt.charAt(i++) !== ']' && i < fmt.length) o += fmt.charAt(i);
+				if(o.slice(-1) !== ']') throw 'unterminated "[" block: |' + o + '|';
+				if(o.match(abstime)) {
+					if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
+					out[out.length] = {t:'Z', v:o.toLowerCase()};
+				} else { o=""; }
+				break;
+			/* Numbers */
+			case '.':
+				if(dt != null) {
+					o = c; while((c=fmt.charAt(++i)) === "0") o += c;
+					out[out.length] = {t:'s', v:o}; break;
+				}
+				/* falls through */
+			case '0': case '#':
+				o = c; while(++i < fmt.length && "0#?.,E+-%".indexOf(c=fmt.charAt(i)) > -1 || c=='\\' && fmt.charAt(i+1) == "-" && "0#".indexOf(fmt.charAt(i+2))>-1) o += c;
+				out[out.length] = {t:'n', v:o}; break;
+			case '?':
+				o = c; while(fmt.charAt(++i) === c) o+=c;
+				q={t:c, v:o}; out[out.length] = q; lst = c; break;
+			case '*': ++i; if(fmt.charAt(i) == ' ' || fmt.charAt(i) == '*') ++i; break; // **
+			case '(': case ')': out[out.length] = {t:(flen===1?'t':c), v:c}; ++i; break;
+			case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
+				o = c; while(i < fmt.length && "0123456789".indexOf(fmt.charAt(++i)) > -1) o+=fmt.charAt(i);
+				out[out.length] = {t:'D', v:o}; break;
+			case ' ': out[out.length] = {t:c, v:c}; ++i; break;
+			default:
+				if(",$-+/():!^&'~{}<>=€acfijklopqrtuvwxz".indexOf(c) === -1) throw new Error('unrecognized character ' + c + ' in ' + fmt);
+				out[out.length] = {t:'t', v:c}; ++i; break;
+		}
+	}
+	var bt = 0, ss0 = 0, ssm;
+	for(i=out.length-1, lst='t'; i >= 0; --i) {
+		switch(out[i].t) {
+			case 'h': case 'H': out[i].t = hr; lst='h'; if(bt < 1) bt = 1; break;
+			case 's':
+				if((ssm=out[i].v.match(/\.0+$/))) ss0=Math.max(ss0,ssm[0].length-1);
+				if(bt < 3) bt = 3;
+			/* falls through */
+			case 'd': case 'y': case 'M': case 'e': lst=out[i].t; break;
+			case 'm': if(lst === 's') { out[i].t = 'M'; if(bt < 2) bt = 2; } break;
+			case 'X': if(out[i].v === "B2");
+				break;
+			case 'Z':
+				if(bt < 1 && out[i].v.match(/[Hh]/)) bt = 1;
+				if(bt < 2 && out[i].v.match(/[Mm]/)) bt = 2;
+				if(bt < 3 && out[i].v.match(/[Ss]/)) bt = 3;
+		}
+	}
+	switch(bt) {
+		case 0: break;
+		case 1:
+			/*::if(!dt) break;*/
+			if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
+			if(dt.S >=  60) { dt.S = 0; ++dt.M; }
+			if(dt.M >=  60) { dt.M = 0; ++dt.H; }
+			break;
+		case 2:
+			/*::if(!dt) break;*/
+			if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
+			if(dt.S >=  60) { dt.S = 0; ++dt.M; }
+			break;
+	}
+	/* replace fields */
+	var nstr = "", jj;
+	for(i=0; i < out.length; ++i) {
+		switch(out[i].t) {
+			case 't': case 'T': case ' ': case 'D': break;
+			case 'X': out[i].v = ""; out[i].t = ";"; break;
+			case 'd': case 'm': case 'y': case 'h': case 'H': case 'M': case 's': case 'e': case 'b': case 'Z':
+				/*::if(!dt) throw "unreachable"; */
+				out[i].v = write_date(out[i].t.charCodeAt(0), out[i].v, dt, ss0);
+				out[i].t = 't'; break;
+			case 'n': case '(': case '?':
+				jj = i+1;
+				while(out[jj] != null && (
+					(c=out[jj].t) === "?" || c === "D" ||
+					(c === " " || c === "t") && out[jj+1] != null && (out[jj+1].t === '?' || out[jj+1].t === "t" && out[jj+1].v === '/') ||
+					out[i].t === '(' && (c === ' ' || c === 'n' || c === ')') ||
+					c === 't' && (out[jj].v === '/' || '$€'.indexOf(out[jj].v) > -1 || out[jj].v === ' ' && out[jj+1] != null && out[jj+1].t == '?')
+				)) {
+					out[i].v += out[jj].v;
+					out[jj] = {v:"", t:";"}; ++jj;
+				}
+				nstr += out[i].v;
+				i = jj-1; break;
+			case 'G': out[i].t = 't'; out[i].v = general_fmt(v,opts); break;
+		}
+	}
+	var vv = "", myv, ostr;
+	if(nstr.length > 0) {
+		myv = (v<0&&nstr.charCodeAt(0) === 45 ? -v : v); /* '-' */
+		ostr = write_num(nstr.charCodeAt(0) === 40 ? '(' : 'n', nstr, myv); /* '(' */
+		jj=ostr.length-1;
+		var decpt = out.length;
+		for(i=0; i < out.length; ++i) if(out[i] != null && out[i].v.indexOf(".") > -1) { decpt = i; break; }
+		var lasti=out.length;
+		if(decpt === out.length && ostr.indexOf("E") === -1) {
+			for(i=out.length-1; i>= 0;--i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
+				if(jj>=out[i].v.length-1) { jj -= out[i].v.length; out[i].v = ostr.substr(jj+1, out[i].v.length); }
+				else if(jj < 0) out[i].v = "";
+				else { out[i].v = ostr.substr(0, jj+1); jj = -1; }
+				out[i].t = 't';
+				lasti = i;
+			}
+			if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
+		}
+		else if(decpt !== out.length && ostr.indexOf("E") === -1) {
+			jj = ostr.indexOf(".")-1;
+			for(i=decpt; i>= 0; --i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
+				j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")-1:out[i].v.length-1;
+				vv = out[i].v.substr(j+1);
+				for(; j>=0; --j) {
+					if(jj>=0 && (out[i].v[j] === "0" || out[i].v[j] === "#")) vv = ostr[jj--] + vv;
+				}
+				out[i].v = vv;
+				out[i].t = 't';
+				lasti = i;
+			}
+			if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
+			jj = ostr.indexOf(".")+1;
+			for(i=decpt; i<out.length; ++i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1 && i !== decpt ) continue;
+				j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")+1:0;
+				vv = out[i].v.substr(0,j);
+				for(; j<out[i].v.length; ++j) {
+					if(jj<ostr.length) vv += ostr[jj++];
+				}
+				out[i].v = vv;
+				out[i].t = 't';
+				lasti = i;
+			}
+		}
+	}
+	for(i=0; i<out.length; ++i) if(out[i] != null && 'n(?'.indexOf(out[i].t)>-1) {
+		myv = (flen >1 && v < 0 && i>0 && out[i-1].v === "-" ? -v:v);
+		out[i].v = write_num(out[i].t, out[i].v, myv);
+		out[i].t = 't';
+	}
+	var retval = "";
+	for(i=0; i !== out.length; ++i) if(out[i] != null) retval += out[i].v;
+	return retval;
+}
+SSF._eval = eval_fmt;
diff --git a/bits/88_cond.js b/bits/88_cond.js
new file mode 100644
index 0000000..ef0dd73
--- /dev/null
+++ b/bits/88_cond.js
@@ -0,0 +1,15 @@
+var cfregex = /\[[=<>]/;
+var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
+function chkcond(v, rr) {
+	if(rr == null) return false;
+	var thresh = parseFloat(rr[2]);
+	switch(rr[1]) {
+		case "=":  if(v == thresh) return true; break;
+		case ">":  if(v >  thresh) return true; break;
+		case "<":  if(v <  thresh) return true; break;
+		case "<>": if(v != thresh) return true; break;
+		case ">=": if(v >= thresh) return true; break;
+		case "<=": if(v <= thresh) return true; break;
+	}
+	return false;
+}
diff --git a/bits/90_main.js b/bits/90_main.js
new file mode 100644
index 0000000..0ff122f
--- /dev/null
+++ b/bits/90_main.js
@@ -0,0 +1,35 @@
+function choose_fmt(f/*:string*/, v) {
+	var fmt = split_fmt(f);
+	var l = fmt.length, lat = fmt[l-1].indexOf("@");
+	if(l<4 && lat>-1) --l;
+	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
+	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	switch(fmt.length) {
+		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
+		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
+		case 3: fmt = lat>-1 ? [fmt[0], fmt[1], fmt[0], fmt[2]] : [fmt[0], fmt[1], fmt[2], "@"]; break;
+		case 4: break;
+	}
+	var ff = v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
+	if(fmt[0].indexOf("[") === -1 && fmt[1].indexOf("[") === -1) return [l, ff];
+	if(fmt[0].match(cfregex) != null || fmt[1].match(cfregex) != null) {
+		var m1 = fmt[0].match(cfregex2);
+		var m2 = fmt[1].match(cfregex2);
+		return chkcond(v, m1) ? [l, fmt[0]] : chkcond(v, m2) ? [l, fmt[1]] : [l, fmt[m1 != null && m2 != null ? 2 : 1]];
+	}
+	return [l, ff];
+}
+function format(fmt/*:string|number*/,v/*:any*/,o/*:?any*/) {
+	fixopts(o != null ? o : (o=[]));
+	var sfmt = "";
+	switch(typeof fmt) {
+		case "string": sfmt = fmt; break;
+		case "number": sfmt = (o.table != null ? (o.table/*:any*/) : table_fmt)[fmt]; break;
+	}
+	if(isgeneral(sfmt,0)) return general_fmt(v, o);
+	var f = choose_fmt(sfmt, v);
+	if(isgeneral(f[1])) return general_fmt(v, o);
+	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
+	else if(v === "" || v == null) return "";
+	return eval_fmt(f[1], v, o, f[0]);
+}
diff --git a/bits/98_exports.js b/bits/98_exports.js
new file mode 100644
index 0000000..ad35fac
--- /dev/null
+++ b/bits/98_exports.js
@@ -0,0 +1,5 @@
+SSF._table = table_fmt;
+SSF.load = function load_entry(fmt/*:string*/, idx/*:number*/) { table_fmt[idx] = fmt; };
+SSF.format = format;
+SSF.get_table = function get_table() { return table_fmt; };
+SSF.load_table = function load_table(tbl/*:{[n:number]:string}*/) { for(var i=0; i!=0x0188; ++i) if(tbl[i] !== undefined) SSF.load(tbl[i], i); };
diff --git a/bits/99_footer.js b/bits/99_footer.js
new file mode 100644
index 0000000..036c6e1
--- /dev/null
+++ b/bits/99_footer.js
@@ -0,0 +1,5 @@
+};
+make_ssf(SSF);
+/*global module */
+/*:: declare var DO_NOT_EXPORT_SSF: any; */
+if(typeof module !== 'undefined' && typeof DO_NOT_EXPORT_SSF === 'undefined') module.exports = SSF;
diff --git a/misc/flow.js b/misc/flow.js
index 47c528c..b81c296 100644
--- a/misc/flow.js
+++ b/misc/flow.js
@@ -3,6 +3,7 @@
 
 type SSFModule = {
 	format(fmt:string|number, v:any, o:any):string;
+	is_date(fmt:string):boolean;
 };
 
 */
diff --git a/package.json b/package.json
index afee4ab..905dac6 100644
--- a/package.json
+++ b/package.json
@@ -1,31 +1,33 @@
 {
-  "name": "ssf",
-  "version": "0.8.1",
-  "author": "SheetJS",
-  "description": "Format data using ECMA-376 spreadsheet Format Codes",
-  "keywords": [ "format", "sprintf", "spreadsheet" ],
-  "main": "ssf.js",
-  "dependencies": {
-    "voc":"",
-    "colors":"0.6.2",
-    "frac":"0.3.1"
-  },
-  "devDependencies": {
-    "mocha":""
-  },
-  "repository": { "type":"git", "url":"git://github.com/SheetJS/ssf.git" },
-  "scripts": {
-    "test": "mocha -R spec"
-  },
-  "bin": {
-    "ssf": "./bin/ssf.njs"
-  },
-  "config": {
-    "blanket": {
-      "pattern": "ssf.js"
-    }
-  },
-  "bugs": { "url": "https://github.com/SheetJS/ssf/issues" },
-  "license": "Apache-2.0",
-  "engines": { "node": ">=0.8" }
+	"name": "ssf",
+	"version": "0.9.0",
+	"author": "SheetJS",
+	"description": "Format data using ECMA-376 spreadsheet Format Codes",
+	"keywords": [ "format", "sprintf", "spreadsheet" ],
+	"bin": {
+		"ssf": "./bin/ssf.njs"
+	},
+	"main": "./ssf",
+	"dependencies": {
+		"voc":"",
+		"colors":"0.6.2",
+		"frac":"0.3.1"
+	},
+	"devDependencies": {
+		"mocha":"",
+		"uglify-js":""
+	},
+	"repository": { "type":"git", "url":"git://github.com/SheetJS/ssf.git" },
+	"scripts": {
+		"test": "make test"
+	},
+	"config": {
+		"blanket": {
+			"pattern": "ssf.js"
+		}
+	},
+	"homepage": "https://oss.sheetjs.com/ssf",
+	"bugs": { "url": "https://github.com/SheetJS/ssf/issues" },
+	"license": "Apache-2.0",
+	"engines": { "node": ">=0.8" }
 }
diff --git a/ssf.flow.js b/ssf.flow.js
new file mode 100644
index 0000000..125412a
--- /dev/null
+++ b/ssf.flow.js
@@ -0,0 +1,833 @@
+/* ssf.js (C) 2013-present SheetJS -- http://sheetjs.com */
+/*jshint -W041 */
+var SSF = {};
+var make_ssf = function make_ssf(SSF){
+SSF.version = '0.9.0';
+function _strrev(x/*:string*/)/*:string*/ { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
+function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
+function pad0(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
+function pad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v;return t.length>=d?t:fill(' ',d-t.length)+t;}
+function rpad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:t+fill(' ',d-t.length);}
+function pad0r1(v/*:any*/,d/*:number*/)/*:string*/{var t=""+Math.round(v); return t.length>=d?t:fill('0',d-t.length)+t;}
+function pad0r2(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
+var p2_32 = Math.pow(2,32);
+function pad0r(v/*:any*/,d/*:number*/)/*:string*/{if(v>p2_32||v<-p2_32) return pad0r1(v,d); var i = Math.round(v); return pad0r2(i,d); }
+function isgeneral(s/*:string*/, i/*:?number*/)/*:boolean*/ { i = i || 0; return s.length >= 7 + i && (s.charCodeAt(i)|32) === 103 && (s.charCodeAt(i+1)|32) === 101 && (s.charCodeAt(i+2)|32) === 110 && (s.charCodeAt(i+3)|32) === 101 && (s.charCodeAt(i+4)|32) === 114 && (s.charCodeAt(i+5)|32) === 97 && (s.charCodeAt(i+6)|32) === 108; }
+/* Options */
+var opts_fmt/*:Array<Array<any> >*/ = [
+	["date1904", 0],
+	["output", ""],
+	["WTF", false]
+];
+function fixopts(o){
+	for(var y = 0; y != opts_fmt.length; ++y) if(o[opts_fmt[y][0]]===undefined) o[opts_fmt[y][0]]=opts_fmt[y][1];
+}
+SSF.opts = opts_fmt;
+var table_fmt = {
+	/*::[*/0/*::]*/:  'General',
+	/*::[*/1/*::]*/:  '0',
+	/*::[*/2/*::]*/:  '0.00',
+	/*::[*/3/*::]*/:  '#,##0',
+	/*::[*/4/*::]*/:  '#,##0.00',
+	/*::[*/9/*::]*/:  '0%',
+	/*::[*/10/*::]*/: '0.00%',
+	/*::[*/11/*::]*/: '0.00E+00',
+	/*::[*/12/*::]*/: '# ?/?',
+	/*::[*/13/*::]*/: '# ??/??',
+	/*::[*/14/*::]*/: 'm/d/yy',
+	/*::[*/15/*::]*/: 'd-mmm-yy',
+	/*::[*/16/*::]*/: 'd-mmm',
+	/*::[*/17/*::]*/: 'mmm-yy',
+	/*::[*/18/*::]*/: 'h:mm AM/PM',
+	/*::[*/19/*::]*/: 'h:mm:ss AM/PM',
+	/*::[*/20/*::]*/: 'h:mm',
+	/*::[*/21/*::]*/: 'h:mm:ss',
+	/*::[*/22/*::]*/: 'm/d/yy h:mm',
+	/*::[*/37/*::]*/: '#,##0 ;(#,##0)',
+	/*::[*/38/*::]*/: '#,##0 ;[Red](#,##0)',
+	/*::[*/39/*::]*/: '#,##0.00;(#,##0.00)',
+	/*::[*/40/*::]*/: '#,##0.00;[Red](#,##0.00)',
+	/*::[*/45/*::]*/: 'mm:ss',
+	/*::[*/46/*::]*/: '[h]:mm:ss',
+	/*::[*/47/*::]*/: 'mmss.0',
+	/*::[*/48/*::]*/: '##0.0E+0',
+	/*::[*/49/*::]*/: '@',
+	/*::[*/56/*::]*/: '"上午/下午 "hh"時"mm"分"ss"秒 "',
+	/*::[*/65535/*::]*/: 'General'
+};
+var days/*:Array<Array<string> >*/ = [
+	['Sun', 'Sunday'],
+	['Mon', 'Monday'],
+	['Tue', 'Tuesday'],
+	['Wed', 'Wednesday'],
+	['Thu', 'Thursday'],
+	['Fri', 'Friday'],
+	['Sat', 'Saturday']
+];
+var months/*:Array<Array<string> >*/ = [
+	['J', 'Jan', 'January'],
+	['F', 'Feb', 'February'],
+	['M', 'Mar', 'March'],
+	['A', 'Apr', 'April'],
+	['M', 'May', 'May'],
+	['J', 'Jun', 'June'],
+	['J', 'Jul', 'July'],
+	['A', 'Aug', 'August'],
+	['S', 'Sep', 'September'],
+	['O', 'Oct', 'October'],
+	['N', 'Nov', 'November'],
+	['D', 'Dec', 'December']
+];
+function frac(x, D, mixed) {
+	var sgn = x < 0 ? -1 : 1;
+	var B = x * sgn;
+	var P_2 = 0, P_1 = 1, P = 0;
+	var Q_2 = 1, Q_1 = 0, Q = 0;
+	var A = Math.floor(B);
+	while(Q_1 < D) {
+		A = Math.floor(B);
+		P = A * P_1 + P_2;
+		Q = A * Q_1 + Q_2;
+		if((B - A) < 0.0000000005) break;
+		B = 1 / (B - A);
+		P_2 = P_1; P_1 = P;
+		Q_2 = Q_1; Q_1 = Q;
+	}
+	if(Q > D) { Q = Q_1; P = P_1; }
+	if(Q > D) { Q = Q_2; P = P_2; }
+	if(!mixed) return [0, sgn * P, Q];
+	if(Q===0) throw "Unexpected state: "+P+" "+P_1+" "+P_2+" "+Q+" "+Q_1+" "+Q_2;
+	var q = Math.floor(sgn * P/Q);
+	return [q, sgn*P - q*Q, Q];
+}
+function general_fmt_int(v/*:number*/, opts/*:?any*/)/*:string*/ { return ""+v; }
+SSF._general_int = general_fmt_int;
+var general_fmt_num = (function make_general_fmt_num() {
+var gnr1 = /\.(\d*[1-9])0+$/, gnr2 = /\.0*$/, gnr4 = /\.(\d*[1-9])0+/, gnr5 = /\.0*[Ee]/, gnr6 = /(E[+-])(\d)$/;
+function gfn2(v) {
+	var w = (v<0?12:11);
+	var o = gfn5(v.toFixed(12)); if(o.length <= w) return o;
+	o = v.toPrecision(10); if(o.length <= w) return o;
+	return v.toExponential(5);
+}
+function gfn3(v) {
+	var o = v.toFixed(11).replace(gnr1,".$1");
+	if(o.length > (v<0?12:11)) o = v.toPrecision(6);
+	return o;
+}
+function gfn4(o) {
+	for(var i = 0; i != o.length; ++i) if((o.charCodeAt(i) | 0x20) === 101) return o.replace(gnr4,".$1").replace(gnr5,"E").replace("e","E").replace(gnr6,"$10$2");
+	return o;
+}
+function gfn5(o) {
+	//for(var i = 0; i != o.length; ++i) if(o.charCodeAt(i) === 46) return o.replace(gnr2,"").replace(gnr1,".$1");
+	//return o;
+	return o.indexOf(".") > -1 ? o.replace(gnr2,"").replace(gnr1,".$1") : o;
+}
+return function general_fmt_num(v/*:number*/, opts/*:?any*/)/*:string*/ {
+	var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
+	if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
+	else if(Math.abs(V) <= 9) o = gfn2(v);
+	else if(V === 10) o = v.toFixed(10).substr(0,12);
+	else o = gfn3(v);
+	return gfn5(gfn4(o));
+};})();
+SSF._general_num = general_fmt_num;
+function general_fmt(v/*:any*/, opts/*:?any*/) {
+	switch(typeof v) {
+		case 'string': return v;
+		case 'boolean': return v ? "TRUE" : "FALSE";
+		case 'number': return (v|0) === v ? general_fmt_int(v, opts) : general_fmt_num(v, opts);
+	}
+	throw new Error("unsupported value in General format: " + v);
+}
+SSF._general = general_fmt;
+function fix_hijri(date, o) { return 0; }
+function parse_date_code(v/*:number*/,opts/*:?any*/,b2/*:?boolean*/) {
+	if(v > 2958465 || v < 0) return null;
+	var date = (v|0), time = Math.floor(86400 * (v - date)), dow=0;
+	var dout=[];
+	var out={D:date, T:time, u:86400*(v-date)-time,y:0,m:0,d:0,H:0,M:0,S:0,q:0};
+	if(Math.abs(out.u) < 1e-6) out.u = 0;
+	fixopts(opts != null ? opts : (opts=[]));
+	if(opts.date1904) date += 1462;
+	if(out.u > 0.999) {
+		out.u = 0;
+		if(++time == 86400) { time = 0; ++date; }
+	}
+	if(date === 60) {dout = b2 ? [1317,10,29] : [1900,2,29]; dow=3;}
+	else if(date === 0) {dout = b2 ? [1317,8,29] : [1900,1,0]; dow=6;}
+	else {
+		if(date > 60) --date;
+		/* 1 = Jan 1 1900 in Gregorian */
+		var d = new Date(1900, 0, 1);
+		d.setDate(d.getDate() + date - 1);
+		dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
+		dow = d.getDay();
+		if(date < 60) dow = (dow + 6) % 7;
+		if(b2) dow = fix_hijri(d, dout);
+	}
+	out.y = dout[0]; out.m = dout[1]; out.d = dout[2];
+	out.S = time % 60; time = Math.floor(time / 60);
+	out.M = time % 60; time = Math.floor(time / 60);
+	out.H = time;
+	out.q = dow;
+	return out;
+}
+SSF.parse_date_code = parse_date_code;
+/*jshint -W086 */
+function write_date(type/*:number*/, fmt/*:string*/, val, ss0/*:?number*/)/*:string*/ {
+	var o="", ss=0, tt=0, y = val.y, out, outl = 0;
+	switch(type) {
+		case 98: /* 'b' buddhist year */
+			y = val.y + 543;
+			/* falls through */
+		case 121: /* 'y' year */
+		switch(fmt.length) {
+			case 1: case 2: out = y % 100; outl = 2; break;
+			default: out = y % 10000; outl = 4; break;
+		} break;
+		case 109: /* 'm' month */
+		switch(fmt.length) {
+			case 1: case 2: out = val.m; outl = fmt.length; break;
+			case 3: return months[val.m-1][1];
+			case 5: return months[val.m-1][0];
+			default: return months[val.m-1][2];
+		} break;
+		case 100: /* 'd' day */
+		switch(fmt.length) {
+			case 1: case 2: out = val.d; outl = fmt.length; break;
+			case 3: return days[val.q][0];
+			default: return days[val.q][1];
+		} break;
+		case 104: /* 'h' 12-hour */
+		switch(fmt.length) {
+			case 1: case 2: out = 1+(val.H+11)%12; outl = fmt.length; break;
+			default: throw 'bad hour format: ' + fmt;
+		} break;
+		case 72: /* 'H' 24-hour */
+		switch(fmt.length) {
+			case 1: case 2: out = val.H; outl = fmt.length; break;
+			default: throw 'bad hour format: ' + fmt;
+		} break;
+		case 77: /* 'M' minutes */
+		switch(fmt.length) {
+			case 1: case 2: out = val.M; outl = fmt.length; break;
+			default: throw 'bad minute format: ' + fmt;
+		} break;
+		case 115: /* 's' seconds */
+		if(val.u === 0) switch(fmt) {
+			case 's': case 'ss': return pad0(val.S, fmt.length);
+			case '.0': case '.00': case '.000':
+		}
+		switch(fmt) {
+			case 's': case 'ss': case '.0': case '.00': case '.000':
+				/*::if(!ss0) ss0 = 0; */
+				if(ss0 >= 2) tt = ss0 === 3 ? 1000 : 100;
+				else tt = ss0 === 1 ? 10 : 1;
+				ss = Math.round((tt)*(val.S + val.u));
+				if(ss >= 60*tt) ss = 0;
+				if(fmt === 's') return ss === 0 ? "0" : ""+ss/tt;
+				o = pad0(ss,2 + ss0);
+				if(fmt === 'ss') return o.substr(0,2);
+				return "." + o.substr(2,fmt.length-1);
+			default: throw 'bad second format: ' + fmt;
+		}
+		case 90: /* 'Z' absolute time */
+		switch(fmt) {
+			case '[h]': case '[hh]': out = val.D*24+val.H; break;
+			case '[m]': case '[mm]': out = (val.D*24+val.H)*60+val.M; break;
+			case '[s]': case '[ss]': out = ((val.D*24+val.H)*60+val.M)*60+Math.round(val.S+val.u); break;
+			default: throw 'bad abstime format: ' + fmt;
+		} outl = fmt.length === 3 ? 1 : 2; break;
+		case 101: /* 'e' era */
+			out = y; outl = 1;
+	}
+	if(outl > 0) return pad0(out, outl); else return "";
+}
+/*jshint +W086 */
+function commaify(s/*:string*/)/*:string*/ {
+	if(s.length <= 3) return s;
+	var j = (s.length % 3), o = s.substr(0,j);
+	for(; j!=s.length; j+=3) o+=(o.length > 0 ? "," : "") + s.substr(j,3);
+	return o;
+}
+var write_num = (function make_write_num(){
+var pct1 = /%/g;
+function write_num_pct(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
+	return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
+}
+function write_num_cm(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var idx = fmt.length - 1;
+	while(fmt.charCodeAt(idx-1) === 44) --idx;
+	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
+}
+function write_num_exp(fmt/*:string*/, val/*:number*/)/*:string*/{
+	var o/*:string*/;
+	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
+	if(fmt.match(/^#+0.0E\+0$/)) {
+		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
+		var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
+		if(ee < 0) ee += period;
+		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
+		if(o.indexOf("e") === -1) {
+			var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
+			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
+			else o += "E+" + (fakee - ee);
+			while(o.substr(0,2) === "0.") {
+				o = o.charAt(0) + o.substr(2,period) + "." + o.substr(2+period);
+				o = o.replace(/^0+([1-9])/,"$1").replace(/^0+\./,"0.");
+			}
+			o = o.replace(/\+-/,"-");
+		}
+		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
+	} else o = val.toExponential(idx);
+	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
+	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
+	return o.replace("e","E");
+}
+var frac1 = /# (\?+)( ?)\/( ?)(\d+)/;
+function write_num_f1(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
+	var den = parseInt(r[4],10), rr = Math.round(aval * den), base = Math.floor(rr/den);
+	var myn = (rr - base*den), myd = den;
+	return sign + (base === 0 ? "" : ""+base) + " " + (myn === 0 ? fill(" ", r[1].length + 1 + r[4].length) : pad_(myn,r[1].length) + r[2] + "/" + r[3] + pad0(myd,r[4].length));
+}
+function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
+	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
+}
+var dec1 = /^#*0*\.(0+)/;
+var closeparen = /\).*[0#]/;
+var phone = /\(###\) ###\\?-####/;
+function hashq(str/*:string*/)/*:string*/ {
+	var o = "", cc;
+	for(var i = 0; i != str.length; ++i) switch((cc=str.charCodeAt(i))) {
+		case 35: break;
+		case 63: o+= " "; break;
+		case 48: o+= "0"; break;
+		default: o+= String.fromCharCode(cc);
+	}
+	return o;
+}
+function rnd(val/*:number*/, d/*:number*/)/*:string*/ { var dd = Math.pow(10,d); return ""+(Math.round(val * dd)/dd); }
+function dec(val/*:number*/, d/*:number*/)/*:number*/ {
+		if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
+				return 0;
+		}
+		return Math.round((val-Math.floor(val))*Math.pow(10,d));
+}
+function carry(val/*:number*/, d/*:number*/)/*:number*/ {
+		if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
+				return 1;
+		}
+		return 0;
+}
+function flr(val/*:number*/)/*:string*/ { if(val < 2147483647 && val > -2147483648) return ""+(val >= 0 ? (val|0) : (val-1|0)); return ""+Math.floor(val); }
+function write_num_flt(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
+	if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
+		var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
+		if(val >= 0) return write_num_flt('n', ffmt, val);
+		return '(' + write_num_flt('n', ffmt, -val) + ')';
+	}
+	if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm(type, fmt, val);
+	if(fmt.indexOf('%') !== -1) return write_num_pct(type, fmt, val);
+	if(fmt.indexOf('E') !== -1) return write_num_exp(fmt, val);
+	if(fmt.charCodeAt(0) === 36) return "$"+write_num_flt(type,fmt.substr(fmt[1]==' '?2:1),val);
+	var o;
+	var r/*:?Array<string>*/, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
+	if(fmt.match(/^00+$/)) return sign + pad0r(aval,fmt.length);
+	if(fmt.match(/^[#?]+$/)) {
+		o = pad0r(val,0); if(o === "0") o = "";
+		return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(frac1))) return write_num_f1(r, aval, sign);
+	if(fmt.match(/^#+0+$/)) return sign + pad0r(aval,fmt.length - fmt.indexOf("0"));
+	if((r = fmt.match(dec1))) {
+		// $FlowIgnore
+		o = rnd(val, r[1].length).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]).replace(/\.(\d*)$/,function($$, $1) { return "." + $1 + fill("0", /*::(*/r/*::||[""])*/[1].length-$1.length); });
+		return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
+	}
+	fmt = fmt.replace(/^#+([0.])/, "$1");
+	if((r = fmt.match(/^(0*)\.(#*)$/))) {
+		return sign + rnd(aval, r[2].length).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
+	}
+	if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify(pad0r(aval,0));
+	if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(""+(Math.floor(val) + carry(val, r[1].length))) + "." + pad0(dec(val, r[1].length),r[1].length);
+	}
+	if((r = fmt.match(/^#,#*,#0/))) return write_num_flt(type,fmt.replace(/^#,#*,/,""),val);
+	if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
+		o = _strrev(write_num_flt(type, fmt.replace(/[\\-]/g,""), val));
+		ri = 0;
+		return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
+	}
+	if(fmt.match(phone)) {
+		o = write_num_flt(type, "##########", val);
+		return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
+	}
+	var oa = "";
+	if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(/*::String(*/r[4]/*::)*/.length,7);
+		ff = frac(aval, Math.pow(10,ri)-1, false);
+		o = "" + sign;
+		oa = write_num("n", /*::String(*/r[1]/*::)*/, ff[1]);
+		if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
+		o += oa + /*::String(*/r[2]/*::)*/ + "/" + /*::String(*/r[3]/*::)*/;
+		oa = rpad_(ff[2],ri);
+		if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
+		o += oa;
+		return o;
+	}
+	if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(Math.max(r[1].length, r[4].length),7);
+		ff = frac(aval, Math.pow(10,ri)-1, true);
+		return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
+	}
+	if((r = fmt.match(/^[#0?]+$/))) {
+		o = pad0r(val, 0);
+		if(fmt.length <= o.length) return o;
+		return hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(/^([#0?]+)\.([#0]+)$/))) {
+		o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
+		ri = o.indexOf(".");
+		var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
+		return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
+	}
+	if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
+		ri = dec(val, r[1].length);
+		return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(flr(val)).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(ri,r[1].length);
+	}
+	switch(fmt) {
+		case "#,###": var x = commaify(pad0r(aval,0)); return x !== "0" ? sign + x : "";
+		default:
+	}
+	throw new Error("unsupported format |" + fmt + "|");
+}
+function write_num_cm2(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var idx = fmt.length - 1;
+	while(fmt.charCodeAt(idx-1) === 44) --idx;
+	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
+}
+function write_num_pct2(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
+	var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
+	return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
+}
+function write_num_exp2(fmt/*:string*/, val/*:number*/)/*:string*/{
+	var o/*:string*/;
+	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
+	if(fmt.match(/^#+0.0E\+0$/)) {
+		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
+		var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
+		if(ee < 0) ee += period;
+		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
+		if(!o.match(/[Ee]/)) {
+			var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
+			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
+			else o += "E+" + (fakee - ee);
+			o = o.replace(/\+-/,"-");
+		}
+		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
+	} else o = val.toExponential(idx);
+	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
+	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
+	return o.replace("e","E");
+}
+function write_num_int(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
+	if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
+		var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
+		if(val >= 0) return write_num_int('n', ffmt, val);
+		return '(' + write_num_int('n', ffmt, -val) + ')';
+	}
+	if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm2(type, fmt, val);
+	if(fmt.indexOf('%') !== -1) return write_num_pct2(type, fmt, val);
+	if(fmt.indexOf('E') !== -1) return write_num_exp2(fmt, val);
+	if(fmt.charCodeAt(0) === 36) return "$"+write_num_int(type,fmt.substr(fmt[1]==' '?2:1),val);
+	var o;
+	var r, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
+	if(fmt.match(/^00+$/)) return sign + pad0(aval,fmt.length);
+	if(fmt.match(/^[#?]+$/)) {
+		o = (""+val); if(val === 0) o = "";
+		return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(frac1))) return write_num_f2(r, aval, sign);
+	if(fmt.match(/^#+0+$/)) return sign + pad0(aval,fmt.length - fmt.indexOf("0"));
+	if((r = fmt.match(dec1))) {
+		/*:: if(!Array.isArray(r)) throw "unreachable"; */
+		// $FlowIgnore
+		o = (""+val).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]);
+		// $FlowIgnore
+		o = o.replace(/\.(\d*)$/,function($$, $1) {
+		/*:: if(!Array.isArray(r)) throw "unreachable"; */
+		// $FlowIgnore
+			return "." + $1 + fill("0", r[1].length-$1.length); });
+		// $FlowIgnore
+		return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
+	}
+	fmt = fmt.replace(/^#+([0.])/, "$1");
+	if((r = fmt.match(/^(0*)\.(#*)$/))) {
+		return sign + (""+aval).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
+	}
+	if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify((""+aval));
+	if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify((""+val)) + "." + fill('0',r[1].length);
+	}
+	if((r = fmt.match(/^#,#*,#0/))) return write_num_int(type,fmt.replace(/^#,#*,/,""),val);
+	if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
+		o = _strrev(write_num_int(type, fmt.replace(/[\\-]/g,""), val));
+		ri = 0;
+		return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
+	}
+	if(fmt.match(phone)) {
+		o = write_num_int(type, "##########", val);
+		return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
+	}
+	var oa = "";
+	if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(r[4].length,7);
+		ff = frac(aval, Math.pow(10,ri)-1, false);
+		o = "" + sign;
+		oa = write_num("n", r[1], ff[1]);
+		if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
+		o += oa + r[2] + "/" + r[3];
+		oa = rpad_(ff[2],ri);
+		if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
+		o += oa;
+		return o;
+	}
+	if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(Math.max(r[1].length, r[4].length),7);
+		ff = frac(aval, Math.pow(10,ri)-1, true);
+		return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
+	}
+	if((r = fmt.match(/^[#0?]+$/))) {
+		o = "" + val;
+		if(fmt.length <= o.length) return o;
+		return hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(/^([#0]+)\.([#0]+)$/))) {
+		o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
+		ri = o.indexOf(".");
+		var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
+		return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
+	}
+	if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify(""+val).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(0,r[1].length);
+	}
+	switch(fmt) {
+		case "#,###": var x = commaify(""+aval); return x !== "0" ? sign + x : "";
+		default:
+	}
+	throw new Error("unsupported format |" + fmt + "|");
+}
+return function write_num(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
+	return (val|0) === val ? write_num_int(type, fmt, val) : write_num_flt(type, fmt, val);
+};})();
+function split_fmt(fmt/*:string*/)/*:Array<string>*/ {
+	var out/*:Array<string>*/ = [];
+	var in_str = false, cc;
+	for(var i = 0, j = 0; i < fmt.length; ++i) switch((cc=fmt.charCodeAt(i))) {
+		case 34: /* '"' */
+			in_str = !in_str; break;
+		case 95: case 42: case 92: /* '_' '*' '\\' */
+			++i; break;
+		case 59: /* ';' */
+			out[out.length] = fmt.substr(j,i-j);
+			j = i+1;
+	}
+	out[out.length] = fmt.substr(j);
+	if(in_str === true) throw new Error("Format |" + fmt + "| unterminated string ");
+	return out;
+}
+SSF._split = split_fmt;
+var abstime = /\[[HhMmSs]*\]/;
+function fmt_is_date(fmt/*:string*/)/*:boolean*/ {
+	var i = 0, cc = 0, c = "", o = "";
+	while(i < fmt.length) {
+		switch((c = fmt.charAt(i))) {
+			case 'G': if(isgeneral(fmt, i)) i+= 6; i++; break;
+			case '"': for(;(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) ++i; ++i; break;
+			case '\\': i+=2; break;
+			case '_': i+=2; break;
+			case '@': ++i; break;
+			case 'B': case 'b':
+				if(fmt.charAt(i+1) === "1" || fmt.charAt(i+1) === "2") return true;
+				/* falls through */
+			case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
+				/* falls through */
+			case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g': return true;
+			case 'A':
+				if(fmt.substr(i, 3) === "A/P") return true;
+				if(fmt.substr(i, 5) === "AM/PM") return true;
+				++i; break;
+			case '[':
+				o = c;
+				while(fmt.charAt(i++) !== ']' && i < fmt.length) o += fmt.charAt(i);
+				if(o.match(abstime)) return true;
+				break;
+			case '.':
+				/* falls through */
+			case '0': case '#':
+				while(i < fmt.length && ("0#?.,E+-%".indexOf(c=fmt.charAt(++i)) > -1 || c=='\\' && fmt.charAt(i+1) == "-" && "0#".indexOf(fmt.charAt(i+2))>-1));
+				break;
+			case '?': while(fmt.charAt(++i) === c); break;
+			case '*': ++i; if(fmt.charAt(i) == ' ' || fmt.charAt(i) == '*') ++i; break;
+			case '(': case ')': ++i; break;
+			case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
+				while(i < fmt.length && "0123456789".indexOf(fmt.charAt(++i)) > -1); break;
+			case ' ': ++i; break;
+			default: ++i; break;
+		}
+	}
+	return false;
+}
+SSF.is_date = fmt_is_date;
+function eval_fmt(fmt/*:string*/, v/*:any*/, opts/*:any*/, flen/*:number*/) {
+	var out = [], o = "", i = 0, c = "", lst='t', q, dt, j, cc;
+	var hr='H';
+	/* Tokenize */
+	while(i < fmt.length) {
+		switch((c = fmt.charAt(i))) {
+			case 'G': /* General */
+				if(!isgeneral(fmt, i)) throw new Error('unrecognized character ' + c + ' in ' +fmt);
+				out[out.length] = {t:'G', v:'General'}; i+=7; break;
+			case '"': /* Literal text */
+				for(o="";(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) o += String.fromCharCode(cc);
+				out[out.length] = {t:'t', v:o}; ++i; break;
+			case '\\': var w = fmt.charAt(++i), t = (w === "(" || w === ")") ? w : 't';
+				out[out.length] = {t:t, v:w}; ++i; break;
+			case '_': out[out.length] = {t:'t', v:" "}; i+=2; break;
+			case '@': /* Text Placeholder */
+				out[out.length] = {t:'T', v:v}; ++i; break;
+			case 'B': case 'b':
+				if(fmt.charAt(i+1) === "1" || fmt.charAt(i+1) === "2") {
+					if(dt==null) { dt=parse_date_code(v, opts, fmt.charAt(i+1) === "2"); if(dt==null) return ""; }
+					out[out.length] = {t:'X', v:fmt.substr(i,2)}; lst = c; i+=2; break;
+				}
+				/* falls through */
+			case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
+				c = c.toLowerCase();
+				/* falls through */
+			case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g':
+				if(v < 0) return "";
+				if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
+				o = c; while(++i<fmt.length && fmt.charAt(i).toLowerCase() === c) o+=c;
+				if(c === 'm' && lst.toLowerCase() === 'h') c = 'M'; /* m = minute */
+				if(c === 'h') c = hr;
+				out[out.length] = {t:c, v:o}; lst = c; break;
+			case 'A':
+				q={t:c, v:"A"};
+				if(dt==null) dt=parse_date_code(v, opts);
+				if(fmt.substr(i, 3) === "A/P") { if(dt!=null) q.v = dt.H >= 12 ? "P" : "A"; q.t = 'T'; hr='h';i+=3;}
+				else if(fmt.substr(i,5) === "AM/PM") { if(dt!=null) q.v = dt.H >= 12 ? "PM" : "AM"; q.t = 'T'; i+=5; hr='h'; }
+				else { q.t = "t"; ++i; }
+				if(dt==null && q.t === 'T') return "";
+				out[out.length] = q; lst = c; break;
+			case '[':
+				o = c;
+				while(fmt.charAt(i++) !== ']' && i < fmt.length) o += fmt.charAt(i);
+				if(o.slice(-1) !== ']') throw 'unterminated "[" block: |' + o + '|';
+				if(o.match(abstime)) {
+					if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
+					out[out.length] = {t:'Z', v:o.toLowerCase()};
+				} else { o=""; }
+				break;
+			/* Numbers */
+			case '.':
+				if(dt != null) {
+					o = c; while((c=fmt.charAt(++i)) === "0") o += c;
+					out[out.length] = {t:'s', v:o}; break;
+				}
+				/* falls through */
+			case '0': case '#':
+				o = c; while(++i < fmt.length && "0#?.,E+-%".indexOf(c=fmt.charAt(i)) > -1 || c=='\\' && fmt.charAt(i+1) == "-" && "0#".indexOf(fmt.charAt(i+2))>-1) o += c;
+				out[out.length] = {t:'n', v:o}; break;
+			case '?':
+				o = c; while(fmt.charAt(++i) === c) o+=c;
+				q={t:c, v:o}; out[out.length] = q; lst = c; break;
+			case '*': ++i; if(fmt.charAt(i) == ' ' || fmt.charAt(i) == '*') ++i; break; // **
+			case '(': case ')': out[out.length] = {t:(flen===1?'t':c), v:c}; ++i; break;
+			case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
+				o = c; while(i < fmt.length && "0123456789".indexOf(fmt.charAt(++i)) > -1) o+=fmt.charAt(i);
+				out[out.length] = {t:'D', v:o}; break;
+			case ' ': out[out.length] = {t:c, v:c}; ++i; break;
+			default:
+				if(",$-+/():!^&'~{}<>=€acfijklopqrtuvwxz".indexOf(c) === -1) throw new Error('unrecognized character ' + c + ' in ' + fmt);
+				out[out.length] = {t:'t', v:c}; ++i; break;
+		}
+	}
+	var bt = 0, ss0 = 0, ssm;
+	for(i=out.length-1, lst='t'; i >= 0; --i) {
+		switch(out[i].t) {
+			case 'h': case 'H': out[i].t = hr; lst='h'; if(bt < 1) bt = 1; break;
+			case 's':
+				if((ssm=out[i].v.match(/\.0+$/))) ss0=Math.max(ss0,ssm[0].length-1);
+				if(bt < 3) bt = 3;
+			/* falls through */
+			case 'd': case 'y': case 'M': case 'e': lst=out[i].t; break;
+			case 'm': if(lst === 's') { out[i].t = 'M'; if(bt < 2) bt = 2; } break;
+			case 'X': if(out[i].v === "B2");
+				break;
+			case 'Z':
+				if(bt < 1 && out[i].v.match(/[Hh]/)) bt = 1;
+				if(bt < 2 && out[i].v.match(/[Mm]/)) bt = 2;
+				if(bt < 3 && out[i].v.match(/[Ss]/)) bt = 3;
+		}
+	}
+	switch(bt) {
+		case 0: break;
+		case 1:
+			/*::if(!dt) break;*/
+			if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
+			if(dt.S >=  60) { dt.S = 0; ++dt.M; }
+			if(dt.M >=  60) { dt.M = 0; ++dt.H; }
+			break;
+		case 2:
+			/*::if(!dt) break;*/
+			if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
+			if(dt.S >=  60) { dt.S = 0; ++dt.M; }
+			break;
+	}
+	/* replace fields */
+	var nstr = "", jj;
+	for(i=0; i < out.length; ++i) {
+		switch(out[i].t) {
+			case 't': case 'T': case ' ': case 'D': break;
+			case 'X': out[i].v = ""; out[i].t = ";"; break;
+			case 'd': case 'm': case 'y': case 'h': case 'H': case 'M': case 's': case 'e': case 'b': case 'Z':
+				/*::if(!dt) throw "unreachable"; */
+				out[i].v = write_date(out[i].t.charCodeAt(0), out[i].v, dt, ss0);
+				out[i].t = 't'; break;
+			case 'n': case '(': case '?':
+				jj = i+1;
+				while(out[jj] != null && (
+					(c=out[jj].t) === "?" || c === "D" ||
+					(c === " " || c === "t") && out[jj+1] != null && (out[jj+1].t === '?' || out[jj+1].t === "t" && out[jj+1].v === '/') ||
+					out[i].t === '(' && (c === ' ' || c === 'n' || c === ')') ||
+					c === 't' && (out[jj].v === '/' || '$€'.indexOf(out[jj].v) > -1 || out[jj].v === ' ' && out[jj+1] != null && out[jj+1].t == '?')
+				)) {
+					out[i].v += out[jj].v;
+					out[jj] = {v:"", t:";"}; ++jj;
+				}
+				nstr += out[i].v;
+				i = jj-1; break;
+			case 'G': out[i].t = 't'; out[i].v = general_fmt(v,opts); break;
+		}
+	}
+	var vv = "", myv, ostr;
+	if(nstr.length > 0) {
+		myv = (v<0&&nstr.charCodeAt(0) === 45 ? -v : v); /* '-' */
+		ostr = write_num(nstr.charCodeAt(0) === 40 ? '(' : 'n', nstr, myv); /* '(' */
+		jj=ostr.length-1;
+		var decpt = out.length;
+		for(i=0; i < out.length; ++i) if(out[i] != null && out[i].v.indexOf(".") > -1) { decpt = i; break; }
+		var lasti=out.length;
+		if(decpt === out.length && ostr.indexOf("E") === -1) {
+			for(i=out.length-1; i>= 0;--i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
+				if(jj>=out[i].v.length-1) { jj -= out[i].v.length; out[i].v = ostr.substr(jj+1, out[i].v.length); }
+				else if(jj < 0) out[i].v = "";
+				else { out[i].v = ostr.substr(0, jj+1); jj = -1; }
+				out[i].t = 't';
+				lasti = i;
+			}
+			if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
+		}
+		else if(decpt !== out.length && ostr.indexOf("E") === -1) {
+			jj = ostr.indexOf(".")-1;
+			for(i=decpt; i>= 0; --i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
+				j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")-1:out[i].v.length-1;
+				vv = out[i].v.substr(j+1);
+				for(; j>=0; --j) {
+					if(jj>=0 && (out[i].v[j] === "0" || out[i].v[j] === "#")) vv = ostr[jj--] + vv;
+				}
+				out[i].v = vv;
+				out[i].t = 't';
+				lasti = i;
+			}
+			if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
+			jj = ostr.indexOf(".")+1;
+			for(i=decpt; i<out.length; ++i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1 && i !== decpt ) continue;
+				j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")+1:0;
+				vv = out[i].v.substr(0,j);
+				for(; j<out[i].v.length; ++j) {
+					if(jj<ostr.length) vv += ostr[jj++];
+				}
+				out[i].v = vv;
+				out[i].t = 't';
+				lasti = i;
+			}
+		}
+	}
+	for(i=0; i<out.length; ++i) if(out[i] != null && 'n(?'.indexOf(out[i].t)>-1) {
+		myv = (flen >1 && v < 0 && i>0 && out[i-1].v === "-" ? -v:v);
+		out[i].v = write_num(out[i].t, out[i].v, myv);
+		out[i].t = 't';
+	}
+	var retval = "";
+	for(i=0; i !== out.length; ++i) if(out[i] != null) retval += out[i].v;
+	return retval;
+}
+SSF._eval = eval_fmt;
+var cfregex = /\[[=<>]/;
+var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
+function chkcond(v, rr) {
+	if(rr == null) return false;
+	var thresh = parseFloat(rr[2]);
+	switch(rr[1]) {
+		case "=":  if(v == thresh) return true; break;
+		case ">":  if(v >  thresh) return true; break;
+		case "<":  if(v <  thresh) return true; break;
+		case "<>": if(v != thresh) return true; break;
+		case ">=": if(v >= thresh) return true; break;
+		case "<=": if(v <= thresh) return true; break;
+	}
+	return false;
+}
+function choose_fmt(f/*:string*/, v) {
+	var fmt = split_fmt(f);
+	var l = fmt.length, lat = fmt[l-1].indexOf("@");
+	if(l<4 && lat>-1) --l;
+	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
+	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	switch(fmt.length) {
+		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
+		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
+		case 3: fmt = lat>-1 ? [fmt[0], fmt[1], fmt[0], fmt[2]] : [fmt[0], fmt[1], fmt[2], "@"]; break;
+		case 4: break;
+	}
+	var ff = v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
+	if(fmt[0].indexOf("[") === -1 && fmt[1].indexOf("[") === -1) return [l, ff];
+	if(fmt[0].match(cfregex) != null || fmt[1].match(cfregex) != null) {
+		var m1 = fmt[0].match(cfregex2);
+		var m2 = fmt[1].match(cfregex2);
+		return chkcond(v, m1) ? [l, fmt[0]] : chkcond(v, m2) ? [l, fmt[1]] : [l, fmt[m1 != null && m2 != null ? 2 : 1]];
+	}
+	return [l, ff];
+}
+function format(fmt/*:string|number*/,v/*:any*/,o/*:?any*/) {
+	fixopts(o != null ? o : (o=[]));
+	var sfmt = "";
+	switch(typeof fmt) {
+		case "string": sfmt = fmt; break;
+		case "number": sfmt = (o.table != null ? (o.table/*:any*/) : table_fmt)[fmt]; break;
+	}
+	if(isgeneral(sfmt,0)) return general_fmt(v, o);
+	var f = choose_fmt(sfmt, v);
+	if(isgeneral(f[1])) return general_fmt(v, o);
+	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
+	else if(v === "" || v == null) return "";
+	return eval_fmt(f[1], v, o, f[0]);
+}
+SSF._table = table_fmt;
+SSF.load = function load_entry(fmt/*:string*/, idx/*:number*/) { table_fmt[idx] = fmt; };
+SSF.format = format;
+SSF.get_table = function get_table() { return table_fmt; };
+SSF.load_table = function load_table(tbl/*:{[n:number]:string}*/) { for(var i=0; i!=0x0188; ++i) if(tbl[i] !== undefined) SSF.load(tbl[i], i); };
+};
+make_ssf(SSF);
+/*global module */
+/*:: declare var DO_NOT_EXPORT_SSF: any; */
+if(typeof module !== 'undefined' && typeof DO_NOT_EXPORT_SSF === 'undefined') module.exports = SSF;
diff --git a/ssf.js b/ssf.js
index 61b1ac9..82b365f 100644
--- a/ssf.js
+++ b/ssf.js
@@ -2,784 +2,825 @@
 /*jshint -W041 */
 var SSF = {};
 var make_ssf = function make_ssf(SSF){
-SSF.version = '0.8.1';
-function _strrev(x/*:string*/)/*:string*/ { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
-function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
-function pad0(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
-function pad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v;return t.length>=d?t:fill(' ',d-t.length)+t;}
-function rpad_(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:t+fill(' ',d-t.length);}
-function pad0r1(v/*:any*/,d/*:number*/)/*:string*/{var t=""+Math.round(v); return t.length>=d?t:fill('0',d-t.length)+t;}
-function pad0r2(v/*:any*/,d/*:number*/)/*:string*/{var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
+SSF.version = '0.9.0';
+function _strrev(x) { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
+function fill(c,l) { var o = ""; while(o.length < l) o+=c; return o; }
+function pad0(v,d){var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
+function pad_(v,d){var t=""+v;return t.length>=d?t:fill(' ',d-t.length)+t;}
+function rpad_(v,d){var t=""+v; return t.length>=d?t:t+fill(' ',d-t.length);}
+function pad0r1(v,d){var t=""+Math.round(v); return t.length>=d?t:fill('0',d-t.length)+t;}
+function pad0r2(v,d){var t=""+v; return t.length>=d?t:fill('0',d-t.length)+t;}
 var p2_32 = Math.pow(2,32);
-function pad0r(v/*:any*/,d/*:number*/)/*:string*/{if(v>p2_32||v<-p2_32) return pad0r1(v,d); var i = Math.round(v); return pad0r2(i,d); }
-function isgeneral(s/*:string*/, i/*:?number*/)/*:boolean*/ { i = i || 0; return s.length >= 7 + i && (s.charCodeAt(i)|32) === 103 && (s.charCodeAt(i+1)|32) === 101 && (s.charCodeAt(i+2)|32) === 110 && (s.charCodeAt(i+3)|32) === 101 && (s.charCodeAt(i+4)|32) === 114 && (s.charCodeAt(i+5)|32) === 97 && (s.charCodeAt(i+6)|32) === 108; }
+function pad0r(v,d){if(v>p2_32||v<-p2_32) return pad0r1(v,d); var i = Math.round(v); return pad0r2(i,d); }
+function isgeneral(s, i) { i = i || 0; return s.length >= 7 + i && (s.charCodeAt(i)|32) === 103 && (s.charCodeAt(i+1)|32) === 101 && (s.charCodeAt(i+2)|32) === 110 && (s.charCodeAt(i+3)|32) === 101 && (s.charCodeAt(i+4)|32) === 114 && (s.charCodeAt(i+5)|32) === 97 && (s.charCodeAt(i+6)|32) === 108; }
 /* Options */
-var opts_fmt/*:Array<Array<any> >*/ = [
-  ["date1904", 0],
-  ["output", ""],
-  ["WTF", false]
+var opts_fmt = [
+	["date1904", 0],
+	["output", ""],
+	["WTF", false]
 ];
 function fixopts(o){
-  for(var y = 0; y != opts_fmt.length; ++y) if(o[opts_fmt[y][0]]===undefined) o[opts_fmt[y][0]]=opts_fmt[y][1];
+	for(var y = 0; y != opts_fmt.length; ++y) if(o[opts_fmt[y][0]]===undefined) o[opts_fmt[y][0]]=opts_fmt[y][1];
 }
 SSF.opts = opts_fmt;
 var table_fmt = {
-  /*::[*/0/*::]*/:  'General',
-  /*::[*/1/*::]*/:  '0',
-  /*::[*/2/*::]*/:  '0.00',
-  /*::[*/3/*::]*/:  '#,##0',
-  /*::[*/4/*::]*/:  '#,##0.00',
-  /*::[*/9/*::]*/:  '0%',
-  /*::[*/10/*::]*/: '0.00%',
-  /*::[*/11/*::]*/: '0.00E+00',
-  /*::[*/12/*::]*/: '# ?/?',
-  /*::[*/13/*::]*/: '# ??/??',
-  /*::[*/14/*::]*/: 'm/d/yy',
-  /*::[*/15/*::]*/: 'd-mmm-yy',
-  /*::[*/16/*::]*/: 'd-mmm',
-  /*::[*/17/*::]*/: 'mmm-yy',
-  /*::[*/18/*::]*/: 'h:mm AM/PM',
-  /*::[*/19/*::]*/: 'h:mm:ss AM/PM',
-  /*::[*/20/*::]*/: 'h:mm',
-  /*::[*/21/*::]*/: 'h:mm:ss',
-  /*::[*/22/*::]*/: 'm/d/yy h:mm',
-  /*::[*/37/*::]*/: '#,##0 ;(#,##0)',
-  /*::[*/38/*::]*/: '#,##0 ;[Red](#,##0)',
-  /*::[*/39/*::]*/: '#,##0.00;(#,##0.00)',
-  /*::[*/40/*::]*/: '#,##0.00;[Red](#,##0.00)',
-  /*::[*/45/*::]*/: 'mm:ss',
-  /*::[*/46/*::]*/: '[h]:mm:ss',
-  /*::[*/47/*::]*/: 'mmss.0',
-  /*::[*/48/*::]*/: '##0.0E+0',
-  /*::[*/49/*::]*/: '@',
-  /*::[*/56/*::]*/: '"上午/下午 "hh"時"mm"分"ss"秒 "',
-  /*::[*/65535/*::]*/: 'General'
+0:  'General',
+1:  '0',
+2:  '0.00',
+3:  '#,##0',
+4:  '#,##0.00',
+9:  '0%',
+10: '0.00%',
+11: '0.00E+00',
+12: '# ?/?',
+13: '# ??/??',
+14: 'm/d/yy',
+15: 'd-mmm-yy',
+16: 'd-mmm',
+17: 'mmm-yy',
+18: 'h:mm AM/PM',
+19: 'h:mm:ss AM/PM',
+20: 'h:mm',
+21: 'h:mm:ss',
+22: 'm/d/yy h:mm',
+37: '#,##0 ;(#,##0)',
+38: '#,##0 ;[Red](#,##0)',
+39: '#,##0.00;(#,##0.00)',
+40: '#,##0.00;[Red](#,##0.00)',
+45: 'mm:ss',
+46: '[h]:mm:ss',
+47: 'mmss.0',
+48: '##0.0E+0',
+49: '@',
+56: '"上午/下午 "hh"時"mm"分"ss"秒 "',
+65535: 'General'
 };
 var days = [
-  ['Sun', 'Sunday'],
-  ['Mon', 'Monday'],
-  ['Tue', 'Tuesday'],
-  ['Wed', 'Wednesday'],
-  ['Thu', 'Thursday'],
-  ['Fri', 'Friday'],
-  ['Sat', 'Saturday']
+	['Sun', 'Sunday'],
+	['Mon', 'Monday'],
+	['Tue', 'Tuesday'],
+	['Wed', 'Wednesday'],
+	['Thu', 'Thursday'],
+	['Fri', 'Friday'],
+	['Sat', 'Saturday']
 ];
 var months = [
-  ['J', 'Jan', 'January'],
-  ['F', 'Feb', 'February'],
-  ['M', 'Mar', 'March'],
-  ['A', 'Apr', 'April'],
-  ['M', 'May', 'May'],
-  ['J', 'Jun', 'June'],
-  ['J', 'Jul', 'July'],
-  ['A', 'Aug', 'August'],
-  ['S', 'Sep', 'September'],
-  ['O', 'Oct', 'October'],
-  ['N', 'Nov', 'November'],
-  ['D', 'Dec', 'December']
+	['J', 'Jan', 'January'],
+	['F', 'Feb', 'February'],
+	['M', 'Mar', 'March'],
+	['A', 'Apr', 'April'],
+	['M', 'May', 'May'],
+	['J', 'Jun', 'June'],
+	['J', 'Jul', 'July'],
+	['A', 'Aug', 'August'],
+	['S', 'Sep', 'September'],
+	['O', 'Oct', 'October'],
+	['N', 'Nov', 'November'],
+	['D', 'Dec', 'December']
 ];
 function frac(x, D, mixed) {
-  var sgn = x < 0 ? -1 : 1;
-  var B = x * sgn;
-  var P_2 = 0, P_1 = 1, P = 0;
-  var Q_2 = 1, Q_1 = 0, Q = 0;
-  var A = Math.floor(B);
-  while(Q_1 < D) {
-    A = Math.floor(B);
-    P = A * P_1 + P_2;
-    Q = A * Q_1 + Q_2;
-    if((B - A) < 0.0000000005) break;
-    B = 1 / (B - A);
-    P_2 = P_1; P_1 = P;
-    Q_2 = Q_1; Q_1 = Q;
-  }
-  if(Q > D) { Q = Q_1; P = P_1; }
-  if(Q > D) { Q = Q_2; P = P_2; }
-  if(!mixed) return [0, sgn * P, Q];
-  if(Q===0) throw "Unexpected state: "+P+" "+P_1+" "+P_2+" "+Q+" "+Q_1+" "+Q_2;
-  var q = Math.floor(sgn * P/Q);
-  return [q, sgn*P - q*Q, Q];
+	var sgn = x < 0 ? -1 : 1;
+	var B = x * sgn;
+	var P_2 = 0, P_1 = 1, P = 0;
+	var Q_2 = 1, Q_1 = 0, Q = 0;
+	var A = Math.floor(B);
+	while(Q_1 < D) {
+		A = Math.floor(B);
+		P = A * P_1 + P_2;
+		Q = A * Q_1 + Q_2;
+		if((B - A) < 0.0000000005) break;
+		B = 1 / (B - A);
+		P_2 = P_1; P_1 = P;
+		Q_2 = Q_1; Q_1 = Q;
+	}
+	if(Q > D) { Q = Q_1; P = P_1; }
+	if(Q > D) { Q = Q_2; P = P_2; }
+	if(!mixed) return [0, sgn * P, Q];
+	if(Q===0) throw "Unexpected state: "+P+" "+P_1+" "+P_2+" "+Q+" "+Q_1+" "+Q_2;
+	var q = Math.floor(sgn * P/Q);
+	return [q, sgn*P - q*Q, Q];
 }
-function general_fmt_int(v/*:number*/, opts/*:?any*/)/*:string*/ { return ""+v; }
+function general_fmt_int(v, opts) { return ""+v; }
 SSF._general_int = general_fmt_int;
 var general_fmt_num = (function make_general_fmt_num() {
 var gnr1 = /\.(\d*[1-9])0+$/, gnr2 = /\.0*$/, gnr4 = /\.(\d*[1-9])0+/, gnr5 = /\.0*[Ee]/, gnr6 = /(E[+-])(\d)$/;
 function gfn2(v) {
-  var w = (v<0?12:11);
-  var o = gfn5(v.toFixed(12)); if(o.length <= w) return o;
-  o = v.toPrecision(10); if(o.length <= w) return o;
-  return v.toExponential(5);
+	var w = (v<0?12:11);
+	var o = gfn5(v.toFixed(12)); if(o.length <= w) return o;
+	o = v.toPrecision(10); if(o.length <= w) return o;
+	return v.toExponential(5);
 }
 function gfn3(v) {
-  var o = v.toFixed(11).replace(gnr1,".$1");
-  if(o.length > (v<0?12:11)) o = v.toPrecision(6);
-  return o;
+	var o = v.toFixed(11).replace(gnr1,".$1");
+	if(o.length > (v<0?12:11)) o = v.toPrecision(6);
+	return o;
 }
 function gfn4(o) {
-  for(var i = 0; i != o.length; ++i) if((o.charCodeAt(i) | 0x20) === 101) return o.replace(gnr4,".$1").replace(gnr5,"E").replace("e","E").replace(gnr6,"$10$2");
-  return o;
+	for(var i = 0; i != o.length; ++i) if((o.charCodeAt(i) | 0x20) === 101) return o.replace(gnr4,".$1").replace(gnr5,"E").replace("e","E").replace(gnr6,"$10$2");
+	return o;
 }
 function gfn5(o) {
-  //for(var i = 0; i != o.length; ++i) if(o.charCodeAt(i) === 46) return o.replace(gnr2,"").replace(gnr1,".$1");
-  //return o;
-  return o.indexOf(".") > -1 ? o.replace(gnr2,"").replace(gnr1,".$1") : o;
+	//for(var i = 0; i != o.length; ++i) if(o.charCodeAt(i) === 46) return o.replace(gnr2,"").replace(gnr1,".$1");
+	//return o;
+	return o.indexOf(".") > -1 ? o.replace(gnr2,"").replace(gnr1,".$1") : o;
 }
-return function general_fmt_num(v/*:number*/, opts/*:?any*/)/*:string*/ {
-  var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
-  if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
-  else if(Math.abs(V) <= 9) o = gfn2(v);
-  else if(V === 10) o = v.toFixed(10).substr(0,12);
-  else o = gfn3(v);
-  return gfn5(gfn4(o));
+return function general_fmt_num(v, opts) {
+	var V = Math.floor(Math.log(Math.abs(v))*Math.LOG10E), o;
+	if(V >= -4 && V <= -1) o = v.toPrecision(10+V);
+	else if(Math.abs(V) <= 9) o = gfn2(v);
+	else if(V === 10) o = v.toFixed(10).substr(0,12);
+	else o = gfn3(v);
+	return gfn5(gfn4(o));
 };})();
 SSF._general_num = general_fmt_num;
-function general_fmt(v/*:any*/, opts/*:?any*/) {
-  switch(typeof v) {
-    case 'string': return v;
-    case 'boolean': return v ? "TRUE" : "FALSE";
-    case 'number': return (v|0) === v ? general_fmt_int(v, opts) : general_fmt_num(v, opts);
-  }
-  throw new Error("unsupported value in General format: " + v);
+function general_fmt(v, opts) {
+	switch(typeof v) {
+		case 'string': return v;
+		case 'boolean': return v ? "TRUE" : "FALSE";
+		case 'number': return (v|0) === v ? general_fmt_int(v, opts) : general_fmt_num(v, opts);
+	}
+	throw new Error("unsupported value in General format: " + v);
 }
 SSF._general = general_fmt;
 function fix_hijri(date, o) { return 0; }
-function parse_date_code(v/*:number*/,opts/*:?any*/,b2/*:?boolean*/) {
-  if(v > 2958465 || v < 0) return null;
-  var date = (v|0), time = Math.floor(86400 * (v - date)), dow=0;
-  var dout=[];
-  var out={D:date, T:time, u:86400*(v-date)-time,y:0,m:0,d:0,H:0,M:0,S:0,q:0};
-  if(Math.abs(out.u) < 1e-6) out.u = 0;
-  fixopts(opts != null ? opts : (opts=[]));
-  if(opts.date1904) date += 1462;
-  if(out.u > 0.999) {
-    out.u = 0;
-    if(++time == 86400) { time = 0; ++date; }
-  }
-  if(date === 60) {dout = b2 ? [1317,10,29] : [1900,2,29]; dow=3;}
-  else if(date === 0) {dout = b2 ? [1317,8,29] : [1900,1,0]; dow=6;}
-  else {
-    if(date > 60) --date;
-    /* 1 = Jan 1 1900 in Gregorian */
-    var d = new Date(1900, 0, 1);
-    d.setDate(d.getDate() + date - 1);
-    dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
-    dow = d.getDay();
-    if(date < 60) dow = (dow + 6) % 7;
-    if(b2) dow = fix_hijri(d, dout);
-  }
-  out.y = dout[0]; out.m = dout[1]; out.d = dout[2];
-  out.S = time % 60; time = Math.floor(time / 60);
-  out.M = time % 60; time = Math.floor(time / 60);
-  out.H = time;
-  out.q = dow;
-  return out;
+function parse_date_code(v,opts,b2) {
+	if(v > 2958465 || v < 0) return null;
+	var date = (v|0), time = Math.floor(86400 * (v - date)), dow=0;
+	var dout=[];
+	var out={D:date, T:time, u:86400*(v-date)-time,y:0,m:0,d:0,H:0,M:0,S:0,q:0};
+	if(Math.abs(out.u) < 1e-6) out.u = 0;
+	fixopts(opts != null ? opts : (opts=[]));
+	if(opts.date1904) date += 1462;
+	if(out.u > 0.999) {
+		out.u = 0;
+		if(++time == 86400) { time = 0; ++date; }
+	}
+	if(date === 60) {dout = b2 ? [1317,10,29] : [1900,2,29]; dow=3;}
+	else if(date === 0) {dout = b2 ? [1317,8,29] : [1900,1,0]; dow=6;}
+	else {
+		if(date > 60) --date;
+		/* 1 = Jan 1 1900 in Gregorian */
+		var d = new Date(1900, 0, 1);
+		d.setDate(d.getDate() + date - 1);
+		dout = [d.getFullYear(), d.getMonth()+1,d.getDate()];
+		dow = d.getDay();
+		if(date < 60) dow = (dow + 6) % 7;
+		if(b2) dow = fix_hijri(d, dout);
+	}
+	out.y = dout[0]; out.m = dout[1]; out.d = dout[2];
+	out.S = time % 60; time = Math.floor(time / 60);
+	out.M = time % 60; time = Math.floor(time / 60);
+	out.H = time;
+	out.q = dow;
+	return out;
 }
 SSF.parse_date_code = parse_date_code;
 /*jshint -W086 */
-function write_date(type/*:number*/, fmt/*:string*/, val, ss0/*:?number*/)/*:string*/ {
-  var o="", ss=0, tt=0, y = val.y, out, outl = 0;
-  switch(type) {
-    case 98: /* 'b' buddhist year */
-      y = val.y + 543;
-      /* falls through */
-    case 121: /* 'y' year */
-    switch(fmt.length) {
-      case 1: case 2: out = y % 100; outl = 2; break;
-      default: out = y % 10000; outl = 4; break;
-    } break;
-    case 109: /* 'm' month */
-    switch(fmt.length) {
-      case 1: case 2: out = val.m; outl = fmt.length; break;
-      case 3: return months[val.m-1][1];
-      case 5: return months[val.m-1][0];
-      default: return months[val.m-1][2];
-    } break;
-    case 100: /* 'd' day */
-    switch(fmt.length) {
-      case 1: case 2: out = val.d; outl = fmt.length; break;
-      case 3: return days[val.q][0];
-      default: return days[val.q][1];
-    } break;
-    case 104: /* 'h' 12-hour */
-    switch(fmt.length) {
-      case 1: case 2: out = 1+(val.H+11)%12; outl = fmt.length; break;
-      default: throw 'bad hour format: ' + fmt;
-    } break;
-    case 72: /* 'H' 24-hour */
-    switch(fmt.length) {
-      case 1: case 2: out = val.H; outl = fmt.length; break;
-      default: throw 'bad hour format: ' + fmt;
-    } break;
-    case 77: /* 'M' minutes */
-    switch(fmt.length) {
-      case 1: case 2: out = val.M; outl = fmt.length; break;
-      default: throw 'bad minute format: ' + fmt;
-    } break;
-    case 115: /* 's' seconds */
-    if(val.u === 0) switch(fmt) {
-      case 's': case 'ss': return pad0(val.S, fmt.length);
-      case '.0': case '.00': case '.000':
-    }
-    switch(fmt) {
-      case 's': case 'ss': case '.0': case '.00': case '.000':
-        /*::if(!ss0) ss0 = 0; */
-        if(ss0 >= 2) tt = ss0 === 3 ? 1000 : 100;
-        else tt = ss0 === 1 ? 10 : 1;
-        ss = Math.round((tt)*(val.S + val.u));
-        if(ss >= 60*tt) ss = 0;
-        if(fmt === 's') return ss === 0 ? "0" : ""+ss/tt;
-        o = pad0(ss,2 + ss0);
-        if(fmt === 'ss') return o.substr(0,2);
-        return "." + o.substr(2,fmt.length-1);
-      default: throw 'bad second format: ' + fmt;
-    }
-    case 90: /* 'Z' absolute time */
-    switch(fmt) {
-      case '[h]': case '[hh]': out = val.D*24+val.H; break;
-      case '[m]': case '[mm]': out = (val.D*24+val.H)*60+val.M; break;
-      case '[s]': case '[ss]': out = ((val.D*24+val.H)*60+val.M)*60+Math.round(val.S+val.u); break;
-      default: throw 'bad abstime format: ' + fmt;
-    } outl = fmt.length === 3 ? 1 : 2; break;
-    case 101: /* 'e' era */
-      out = y; outl = 1;
-  }
-  if(outl > 0) return pad0(out, outl); else return "";
+function write_date(type, fmt, val, ss0) {
+	var o="", ss=0, tt=0, y = val.y, out, outl = 0;
+	switch(type) {
+		case 98: /* 'b' buddhist year */
+			y = val.y + 543;
+			/* falls through */
+		case 121: /* 'y' year */
+		switch(fmt.length) {
+			case 1: case 2: out = y % 100; outl = 2; break;
+			default: out = y % 10000; outl = 4; break;
+		} break;
+		case 109: /* 'm' month */
+		switch(fmt.length) {
+			case 1: case 2: out = val.m; outl = fmt.length; break;
+			case 3: return months[val.m-1][1];
+			case 5: return months[val.m-1][0];
+			default: return months[val.m-1][2];
+		} break;
+		case 100: /* 'd' day */
+		switch(fmt.length) {
+			case 1: case 2: out = val.d; outl = fmt.length; break;
+			case 3: return days[val.q][0];
+			default: return days[val.q][1];
+		} break;
+		case 104: /* 'h' 12-hour */
+		switch(fmt.length) {
+			case 1: case 2: out = 1+(val.H+11)%12; outl = fmt.length; break;
+			default: throw 'bad hour format: ' + fmt;
+		} break;
+		case 72: /* 'H' 24-hour */
+		switch(fmt.length) {
+			case 1: case 2: out = val.H; outl = fmt.length; break;
+			default: throw 'bad hour format: ' + fmt;
+		} break;
+		case 77: /* 'M' minutes */
+		switch(fmt.length) {
+			case 1: case 2: out = val.M; outl = fmt.length; break;
+			default: throw 'bad minute format: ' + fmt;
+		} break;
+		case 115: /* 's' seconds */
+		if(val.u === 0) switch(fmt) {
+			case 's': case 'ss': return pad0(val.S, fmt.length);
+			case '.0': case '.00': case '.000':
+		}
+		switch(fmt) {
+			case 's': case 'ss': case '.0': case '.00': case '.000':
+if(ss0 >= 2) tt = ss0 === 3 ? 1000 : 100;
+				else tt = ss0 === 1 ? 10 : 1;
+				ss = Math.round((tt)*(val.S + val.u));
+				if(ss >= 60*tt) ss = 0;
+				if(fmt === 's') return ss === 0 ? "0" : ""+ss/tt;
+				o = pad0(ss,2 + ss0);
+				if(fmt === 'ss') return o.substr(0,2);
+				return "." + o.substr(2,fmt.length-1);
+			default: throw 'bad second format: ' + fmt;
+		}
+		case 90: /* 'Z' absolute time */
+		switch(fmt) {
+			case '[h]': case '[hh]': out = val.D*24+val.H; break;
+			case '[m]': case '[mm]': out = (val.D*24+val.H)*60+val.M; break;
+			case '[s]': case '[ss]': out = ((val.D*24+val.H)*60+val.M)*60+Math.round(val.S+val.u); break;
+			default: throw 'bad abstime format: ' + fmt;
+		} outl = fmt.length === 3 ? 1 : 2; break;
+		case 101: /* 'e' era */
+			out = y; outl = 1;
+	}
+	if(outl > 0) return pad0(out, outl); else return "";
 }
 /*jshint +W086 */
-function commaify(s/*:string*/)/*:string*/ {
-  if(s.length <= 3) return s;
-  var j = (s.length % 3), o = s.substr(0,j);
-  for(; j!=s.length; j+=3) o+=(o.length > 0 ? "," : "") + s.substr(j,3);
-  return o;
+function commaify(s) {
+	if(s.length <= 3) return s;
+	var j = (s.length % 3), o = s.substr(0,j);
+	for(; j!=s.length; j+=3) o+=(o.length > 0 ? "," : "") + s.substr(j,3);
+	return o;
 }
 var write_num = (function make_write_num(){
 var pct1 = /%/g;
-function write_num_pct(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
-  var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
-  return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
+function write_num_pct(type, fmt, val){
+	var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
+	return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
 }
-function write_num_cm(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
-  var idx = fmt.length - 1;
-  while(fmt.charCodeAt(idx-1) === 44) --idx;
-  return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
+function write_num_cm(type, fmt, val){
+	var idx = fmt.length - 1;
+	while(fmt.charCodeAt(idx-1) === 44) --idx;
+	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
 }
-function write_num_exp(fmt/*:string*/, val/*:number*/)/*:string*/{
-  var o/*:string*/;
-  var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
-  if(fmt.match(/^#+0.0E\+0$/)) {
-    var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
-    var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
-    if(ee < 0) ee += period;
-    o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
-    if(o.indexOf("e") === -1) {
-      var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
-      if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
-      else o += "E+" + (fakee - ee);
-      while(o.substr(0,2) === "0.") {
-        o = o.charAt(0) + o.substr(2,period) + "." + o.substr(2+period);
-        o = o.replace(/^0+([1-9])/,"$1").replace(/^0+\./,"0.");
-      }
-      o = o.replace(/\+-/,"-");
-    }
-    o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
-  } else o = val.toExponential(idx);
-  if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
-  if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
-  return o.replace("e","E");
+function write_num_exp(fmt, val){
+	var o;
+	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
+	if(fmt.match(/^#+0.0E\+0$/)) {
+		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
+		var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
+		if(ee < 0) ee += period;
+		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
+		if(o.indexOf("e") === -1) {
+			var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
+			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
+			else o += "E+" + (fakee - ee);
+			while(o.substr(0,2) === "0.") {
+				o = o.charAt(0) + o.substr(2,period) + "." + o.substr(2+period);
+				o = o.replace(/^0+([1-9])/,"$1").replace(/^0+\./,"0.");
+			}
+			o = o.replace(/\+-/,"-");
+		}
+		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
+	} else o = val.toExponential(idx);
+	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
+	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
+	return o.replace("e","E");
 }
 var frac1 = /# (\?+)( ?)\/( ?)(\d+)/;
-function write_num_f1(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
-  var den = parseInt(r[4],10), rr = Math.round(aval * den), base = Math.floor(rr/den);
-  var myn = (rr - base*den), myd = den;
-  return sign + (base === 0 ? "" : ""+base) + " " + (myn === 0 ? fill(" ", r[1].length + 1 + r[4].length) : pad_(myn,r[1].length) + r[2] + "/" + r[3] + pad0(myd,r[4].length));
+function write_num_f1(r, aval, sign) {
+	var den = parseInt(r[4],10), rr = Math.round(aval * den), base = Math.floor(rr/den);
+	var myn = (rr - base*den), myd = den;
+	return sign + (base === 0 ? "" : ""+base) + " " + (myn === 0 ? fill(" ", r[1].length + 1 + r[4].length) : pad_(myn,r[1].length) + r[2] + "/" + r[3] + pad0(myd,r[4].length));
 }
-function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
-  return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
+function write_num_f2(r, aval, sign) {
+	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
 }
 var dec1 = /^#*0*\.(0+)/;
 var closeparen = /\).*[0#]/;
 var phone = /\(###\) ###\\?-####/;
-function hashq(str/*:string*/)/*:string*/ {
-  var o = "", cc;
-  for(var i = 0; i != str.length; ++i) switch((cc=str.charCodeAt(i))) {
-    case 35: break;
-    case 63: o+= " "; break;
-    case 48: o+= "0"; break;
-    default: o+= String.fromCharCode(cc);
-  }
-  return o;
+function hashq(str) {
+	var o = "", cc;
+	for(var i = 0; i != str.length; ++i) switch((cc=str.charCodeAt(i))) {
+		case 35: break;
+		case 63: o+= " "; break;
+		case 48: o+= "0"; break;
+		default: o+= String.fromCharCode(cc);
+	}
+	return o;
 }
-function rnd(val/*:number*/, d/*:number*/)/*:string*/ { var dd = Math.pow(10,d); return ""+(Math.round(val * dd)/dd); }
-function dec(val/*:number*/, d/*:number*/)/*:number*/ {
-    if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
-        return 0;
-    }
-    return Math.round((val-Math.floor(val))*Math.pow(10,d));
+function rnd(val, d) { var dd = Math.pow(10,d); return ""+(Math.round(val * dd)/dd); }
+function dec(val, d) {
+		if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
+				return 0;
+		}
+		return Math.round((val-Math.floor(val))*Math.pow(10,d));
 }
-function carry(val/*:number*/, d/*:number*/)/*:number*/ {
-    if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
-        return 1;
-    }
-    return 0;
+function carry(val, d) {
+		if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
+				return 1;
+		}
+		return 0;
 }
-function flr(val/*:number*/)/*:string*/ { if(val < 2147483647 && val > -2147483648) return ""+(val >= 0 ? (val|0) : (val-1|0)); return ""+Math.floor(val); }
-function write_num_flt(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
-  if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
-    var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
-    if(val >= 0) return write_num_flt('n', ffmt, val);
-    return '(' + write_num_flt('n', ffmt, -val) + ')';
-  }
-  if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm(type, fmt, val);
-  if(fmt.indexOf('%') !== -1) return write_num_pct(type, fmt, val);
-  if(fmt.indexOf('E') !== -1) return write_num_exp(fmt, val);
-  if(fmt.charCodeAt(0) === 36) return "$"+write_num_flt(type,fmt.substr(fmt[1]==' '?2:1),val);
-  var o;
-  var r/*:?Array<string>*/, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
-  if(fmt.match(/^00+$/)) return sign + pad0r(aval,fmt.length);
-  if(fmt.match(/^[#?]+$/)) {
-    o = pad0r(val,0); if(o === "0") o = "";
-    return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
-  }
-  if((r = fmt.match(frac1))) return write_num_f1(r, aval, sign);
-  if(fmt.match(/^#+0+$/)) return sign + pad0r(aval,fmt.length - fmt.indexOf("0"));
-  if((r = fmt.match(dec1))) {
-    // $FlowIgnore
-    o = rnd(val, r[1].length).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]).replace(/\.(\d*)$/,function($$, $1) { return "." + $1 + fill("0", r[1].length-$1.length); });
-    return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
-  }
-  fmt = fmt.replace(/^#+([0.])/, "$1");
-  if((r = fmt.match(/^(0*)\.(#*)$/))) {
-    return sign + rnd(aval, r[2].length).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
-  }
-  if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify(pad0r(aval,0));
-  if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
-    return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(""+(Math.floor(val) + carry(val, r[1].length))) + "." + pad0(dec(val, r[1].length),r[1].length);
-  }
-  if((r = fmt.match(/^#,#*,#0/))) return write_num_flt(type,fmt.replace(/^#,#*,/,""),val);
-  if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
-    o = _strrev(write_num_flt(type, fmt.replace(/[\\-]/g,""), val));
-    ri = 0;
-    return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
-  }
-  if(fmt.match(phone)) {
-    o = write_num_flt(type, "##########", val);
-    return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
-  }
-  var oa = "";
-  if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
-    ri = Math.min(/*::String(*/r[4]/*::)*/.length,7);
-    ff = frac(aval, Math.pow(10,ri)-1, false);
-    o = "" + sign;
-    oa = write_num("n", /*::String(*/r[1]/*::)*/, ff[1]);
-    if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
-    o += oa + /*::String(*/r[2]/*::)*/ + "/" + /*::String(*/r[3]/*::)*/;
-    oa = rpad_(ff[2],ri);
-    if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
-    o += oa;
-    return o;
-  }
-  if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
-    ri = Math.min(Math.max(r[1].length, r[4].length),7);
-    ff = frac(aval, Math.pow(10,ri)-1, true);
-    return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
-  }
-  if((r = fmt.match(/^[#0?]+$/))) {
-    o = pad0r(val, 0);
-    if(fmt.length <= o.length) return o;
-    return hashq(fmt.substr(0,fmt.length-o.length)) + o;
-  }
-  if((r = fmt.match(/^([#0?]+)\.([#0]+)$/))) {
-    o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
-    ri = o.indexOf(".");
-    var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
-    return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
-  }
-  if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
-    ri = dec(val, r[1].length);
-    return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(flr(val)).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(ri,r[1].length);
-  }
-  switch(fmt) {
-    case "#,###": var x = commaify(pad0r(aval,0)); return x !== "0" ? sign + x : "";
-    default:
-  }
-  throw new Error("unsupported format |" + fmt + "|");
+function flr(val) { if(val < 2147483647 && val > -2147483648) return ""+(val >= 0 ? (val|0) : (val-1|0)); return ""+Math.floor(val); }
+function write_num_flt(type, fmt, val) {
+	if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
+		var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
+		if(val >= 0) return write_num_flt('n', ffmt, val);
+		return '(' + write_num_flt('n', ffmt, -val) + ')';
+	}
+	if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm(type, fmt, val);
+	if(fmt.indexOf('%') !== -1) return write_num_pct(type, fmt, val);
+	if(fmt.indexOf('E') !== -1) return write_num_exp(fmt, val);
+	if(fmt.charCodeAt(0) === 36) return "$"+write_num_flt(type,fmt.substr(fmt[1]==' '?2:1),val);
+	var o;
+	var r, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
+	if(fmt.match(/^00+$/)) return sign + pad0r(aval,fmt.length);
+	if(fmt.match(/^[#?]+$/)) {
+		o = pad0r(val,0); if(o === "0") o = "";
+		return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(frac1))) return write_num_f1(r, aval, sign);
+	if(fmt.match(/^#+0+$/)) return sign + pad0r(aval,fmt.length - fmt.indexOf("0"));
+	if((r = fmt.match(dec1))) {
+		// $FlowIgnore
+		o = rnd(val, r[1].length).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]).replace(/\.(\d*)$/,function($$, $1) { return "." + $1 + fill("0", r[1].length-$1.length); });
+		return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
+	}
+	fmt = fmt.replace(/^#+([0.])/, "$1");
+	if((r = fmt.match(/^(0*)\.(#*)$/))) {
+		return sign + rnd(aval, r[2].length).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
+	}
+	if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify(pad0r(aval,0));
+	if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(""+(Math.floor(val) + carry(val, r[1].length))) + "." + pad0(dec(val, r[1].length),r[1].length);
+	}
+	if((r = fmt.match(/^#,#*,#0/))) return write_num_flt(type,fmt.replace(/^#,#*,/,""),val);
+	if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
+		o = _strrev(write_num_flt(type, fmt.replace(/[\\-]/g,""), val));
+		ri = 0;
+		return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
+	}
+	if(fmt.match(phone)) {
+		o = write_num_flt(type, "##########", val);
+		return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
+	}
+	var oa = "";
+	if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(r[4].length,7);
+		ff = frac(aval, Math.pow(10,ri)-1, false);
+		o = "" + sign;
+		oa = write_num("n", r[1], ff[1]);
+		if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
+		o += oa + r[2] + "/" + r[3];
+		oa = rpad_(ff[2],ri);
+		if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
+		o += oa;
+		return o;
+	}
+	if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(Math.max(r[1].length, r[4].length),7);
+		ff = frac(aval, Math.pow(10,ri)-1, true);
+		return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
+	}
+	if((r = fmt.match(/^[#0?]+$/))) {
+		o = pad0r(val, 0);
+		if(fmt.length <= o.length) return o;
+		return hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(/^([#0?]+)\.([#0]+)$/))) {
+		o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
+		ri = o.indexOf(".");
+		var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
+		return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
+	}
+	if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
+		ri = dec(val, r[1].length);
+		return val < 0 ? "-" + write_num_flt(type, fmt, -val) : commaify(flr(val)).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(ri,r[1].length);
+	}
+	switch(fmt) {
+		case "#,###": var x = commaify(pad0r(aval,0)); return x !== "0" ? sign + x : "";
+		default:
+	}
+	throw new Error("unsupported format |" + fmt + "|");
 }
-function write_num_cm2(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
-  var idx = fmt.length - 1;
-  while(fmt.charCodeAt(idx-1) === 44) --idx;
-  return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
+function write_num_cm2(type, fmt, val){
+	var idx = fmt.length - 1;
+	while(fmt.charCodeAt(idx-1) === 44) --idx;
+	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
 }
-function write_num_pct2(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
-  var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
-  return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
+function write_num_pct2(type, fmt, val){
+	var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
+	return write_num(type, sfmt, val * Math.pow(10,2*mul)) + fill("%",mul);
 }
-function write_num_exp2(fmt/*:string*/, val/*:number*/)/*:string*/{
-  var o/*:string*/;
-  var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
-  if(fmt.match(/^#+0.0E\+0$/)) {
-    var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
-    var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
-    if(ee < 0) ee += period;
-    o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
-    if(!o.match(/[Ee]/)) {
-      var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
-      if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
-      else o += "E+" + (fakee - ee);
-      o = o.replace(/\+-/,"-");
-    }
-    o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
-  } else o = val.toExponential(idx);
-  if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
-  if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
-  return o.replace("e","E");
+function write_num_exp2(fmt, val){
+	var o;
+	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
+	if(fmt.match(/^#+0.0E\+0$/)) {
+		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
+		var ee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E)%period;
+		if(ee < 0) ee += period;
+		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
+		if(!o.match(/[Ee]/)) {
+			var fakee = Math.floor(Math.log(Math.abs(val))*Math.LOG10E);
+			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
+			else o += "E+" + (fakee - ee);
+			o = o.replace(/\+-/,"-");
+		}
+		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
+	} else o = val.toExponential(idx);
+	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
+	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
+	return o.replace("e","E");
 }
-function write_num_int(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
-  if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
-    var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
-    if(val >= 0) return write_num_int('n', ffmt, val);
-    return '(' + write_num_int('n', ffmt, -val) + ')';
-  }
-  if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm2(type, fmt, val);
-  if(fmt.indexOf('%') !== -1) return write_num_pct2(type, fmt, val);
-  if(fmt.indexOf('E') !== -1) return write_num_exp2(fmt, val);
-  if(fmt.charCodeAt(0) === 36) return "$"+write_num_int(type,fmt.substr(fmt[1]==' '?2:1),val);
-  var o;
-  var r, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
-  if(fmt.match(/^00+$/)) return sign + pad0(aval,fmt.length);
-  if(fmt.match(/^[#?]+$/)) {
-    o = (""+val); if(val === 0) o = "";
-    return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
-  }
-  if((r = fmt.match(frac1))) return write_num_f2(r, aval, sign);
-  if(fmt.match(/^#+0+$/)) return sign + pad0(aval,fmt.length - fmt.indexOf("0"));
-  if((r = fmt.match(dec1))) {
-    // $FlowIgnore
-    o = (""+val).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]).replace(/\.(\d*)$/,function($$, $1) { return "." + $1 + fill("0", r[1].length-$1.length); });
-    return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
-  }
-  fmt = fmt.replace(/^#+([0.])/, "$1");
-  if((r = fmt.match(/^(0*)\.(#*)$/))) {
-    return sign + (""+aval).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
-  }
-  if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify((""+aval));
-  if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
-    return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify((""+val)) + "." + fill('0',r[1].length);
-  }
-  if((r = fmt.match(/^#,#*,#0/))) return write_num_int(type,fmt.replace(/^#,#*,/,""),val);
-  if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
-    o = _strrev(write_num_int(type, fmt.replace(/[\\-]/g,""), val));
-    ri = 0;
-    return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
-  }
-  if(fmt.match(phone)) {
-    o = write_num_int(type, "##########", val);
-    return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
-  }
-  var oa = "";
-  if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
-    ri = Math.min(r[4].length,7);
-    ff = frac(aval, Math.pow(10,ri)-1, false);
-    o = "" + sign;
-    oa = write_num("n", r[1], ff[1]);
-    if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
-    o += oa + r[2] + "/" + r[3];
-    oa = rpad_(ff[2],ri);
-    if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
-    o += oa;
-    return o;
-  }
-  if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
-    ri = Math.min(Math.max(r[1].length, r[4].length),7);
-    ff = frac(aval, Math.pow(10,ri)-1, true);
-    return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
-  }
-  if((r = fmt.match(/^[#0?]+$/))) {
-    o = "" + val;
-    if(fmt.length <= o.length) return o;
-    return hashq(fmt.substr(0,fmt.length-o.length)) + o;
-  }
-  if((r = fmt.match(/^([#0]+)\.([#0]+)$/))) {
-    o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
-    ri = o.indexOf(".");
-    var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
-    return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
-  }
-  if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
-    return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify(""+val).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(0,r[1].length);
-  }
-  switch(fmt) {
-    case "#,###": var x = commaify(""+aval); return x !== "0" ? sign + x : "";
-    default:
-  }
-  throw new Error("unsupported format |" + fmt + "|");
+function write_num_int(type, fmt, val) {
+	if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
+		var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
+		if(val >= 0) return write_num_int('n', ffmt, val);
+		return '(' + write_num_int('n', ffmt, -val) + ')';
+	}
+	if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm2(type, fmt, val);
+	if(fmt.indexOf('%') !== -1) return write_num_pct2(type, fmt, val);
+	if(fmt.indexOf('E') !== -1) return write_num_exp2(fmt, val);
+	if(fmt.charCodeAt(0) === 36) return "$"+write_num_int(type,fmt.substr(fmt[1]==' '?2:1),val);
+	var o;
+	var r, ri, ff, aval = Math.abs(val), sign = val < 0 ? "-" : "";
+	if(fmt.match(/^00+$/)) return sign + pad0(aval,fmt.length);
+	if(fmt.match(/^[#?]+$/)) {
+		o = (""+val); if(val === 0) o = "";
+		return o.length > fmt.length ? o : hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(frac1))) return write_num_f2(r, aval, sign);
+	if(fmt.match(/^#+0+$/)) return sign + pad0(aval,fmt.length - fmt.indexOf("0"));
+	if((r = fmt.match(dec1))) {
+// $FlowIgnore
+		o = (""+val).replace(/^([^\.]+)$/,"$1."+r[1]).replace(/\.$/,"."+r[1]);
+		// $FlowIgnore
+		o = o.replace(/\.(\d*)$/,function($$, $1) {
+// $FlowIgnore
+			return "." + $1 + fill("0", r[1].length-$1.length); });
+		// $FlowIgnore
+		return fmt.indexOf("0.") !== -1 ? o : o.replace(/^0\./,".");
+	}
+	fmt = fmt.replace(/^#+([0.])/, "$1");
+	if((r = fmt.match(/^(0*)\.(#*)$/))) {
+		return sign + (""+aval).replace(/\.(\d*[1-9])0*$/,".$1").replace(/^(-?\d*)$/,"$1.").replace(/^0\./,r[1].length?"0.":".");
+	}
+	if((r = fmt.match(/^#,##0(\.?)$/))) return sign + commaify((""+aval));
+	if((r = fmt.match(/^#,##0\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify((""+val)) + "." + fill('0',r[1].length);
+	}
+	if((r = fmt.match(/^#,#*,#0/))) return write_num_int(type,fmt.replace(/^#,#*,/,""),val);
+	if((r = fmt.match(/^([0#]+)(\\?-([0#]+))+$/))) {
+		o = _strrev(write_num_int(type, fmt.replace(/[\\-]/g,""), val));
+		ri = 0;
+		return _strrev(_strrev(fmt.replace(/\\/g,"")).replace(/[0#]/g,function(x){return ri<o.length?o[ri++]:x==='0'?'0':"";}));
+	}
+	if(fmt.match(phone)) {
+		o = write_num_int(type, "##########", val);
+		return "(" + o.substr(0,3) + ") " + o.substr(3, 3) + "-" + o.substr(6);
+	}
+	var oa = "";
+	if((r = fmt.match(/^([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(r[4].length,7);
+		ff = frac(aval, Math.pow(10,ri)-1, false);
+		o = "" + sign;
+		oa = write_num("n", r[1], ff[1]);
+		if(oa[oa.length-1] == " ") oa = oa.substr(0,oa.length-1) + "0";
+		o += oa + r[2] + "/" + r[3];
+		oa = rpad_(ff[2],ri);
+		if(oa.length < r[4].length) oa = hashq(r[4].substr(r[4].length-oa.length)) + oa;
+		o += oa;
+		return o;
+	}
+	if((r = fmt.match(/^# ([#0?]+)( ?)\/( ?)([#0?]+)/))) {
+		ri = Math.min(Math.max(r[1].length, r[4].length),7);
+		ff = frac(aval, Math.pow(10,ri)-1, true);
+		return sign + (ff[0]||(ff[1] ? "" : "0")) + " " + (ff[1] ? pad_(ff[1],ri) + r[2] + "/" + r[3] + rpad_(ff[2],ri): fill(" ", 2*ri+1 + r[2].length + r[3].length));
+	}
+	if((r = fmt.match(/^[#0?]+$/))) {
+		o = "" + val;
+		if(fmt.length <= o.length) return o;
+		return hashq(fmt.substr(0,fmt.length-o.length)) + o;
+	}
+	if((r = fmt.match(/^([#0]+)\.([#0]+)$/))) {
+		o = "" + val.toFixed(Math.min(r[2].length,10)).replace(/([^0])0+$/,"$1");
+		ri = o.indexOf(".");
+		var lres = fmt.indexOf(".") - ri, rres = fmt.length - o.length - lres;
+		return hashq(fmt.substr(0,lres) + o + fmt.substr(fmt.length-rres));
+	}
+	if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
+		return val < 0 ? "-" + write_num_int(type, fmt, -val) : commaify(""+val).replace(/^\d,\d{3}$/,"0$&").replace(/^\d*$/,function($$) { return "00," + ($$.length < 3 ? pad0(0,3-$$.length) : "") + $$; }) + "." + pad0(0,r[1].length);
+	}
+	switch(fmt) {
+		case "#,###": var x = commaify(""+aval); return x !== "0" ? sign + x : "";
+		default:
+	}
+	throw new Error("unsupported format |" + fmt + "|");
 }
-return function write_num(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/ {
-  return (val|0) === val ? write_num_int(type, fmt, val) : write_num_flt(type, fmt, val);
+return function write_num(type, fmt, val) {
+	return (val|0) === val ? write_num_int(type, fmt, val) : write_num_flt(type, fmt, val);
 };})();
-function split_fmt(fmt/*:string*/)/*:Array<string>*/ {
-  var out/*:Array<string>*/ = [];
-  var in_str = false, cc;
-  for(var i = 0, j = 0; i < fmt.length; ++i) switch((cc=fmt.charCodeAt(i))) {
-    case 34: /* '"' */
-      in_str = !in_str; break;
-    case 95: case 42: case 92: /* '_' '*' '\\' */
-      ++i; break;
-    case 59: /* ';' */
-      out[out.length] = fmt.substr(j,i-j);
-      j = i+1;
-  }
-  out[out.length] = fmt.substr(j);
-  if(in_str === true) throw new Error("Format |" + fmt + "| unterminated string ");
-  return out;
+function split_fmt(fmt) {
+	var out = [];
+	var in_str = false, cc;
+	for(var i = 0, j = 0; i < fmt.length; ++i) switch((cc=fmt.charCodeAt(i))) {
+		case 34: /* '"' */
+			in_str = !in_str; break;
+		case 95: case 42: case 92: /* '_' '*' '\\' */
+			++i; break;
+		case 59: /* ';' */
+			out[out.length] = fmt.substr(j,i-j);
+			j = i+1;
+	}
+	out[out.length] = fmt.substr(j);
+	if(in_str === true) throw new Error("Format |" + fmt + "| unterminated string ");
+	return out;
 }
 SSF._split = split_fmt;
 var abstime = /\[[HhMmSs]*\]/;
-function eval_fmt(fmt/*:string*/, v/*:any*/, opts/*:any*/, flen/*:number*/) {
-  var out = [], o = "", i = 0, c = "", lst='t', q, dt, j, cc;
-  var hr='H';
-  /* Tokenize */
-  while(i < fmt.length) {
-    switch((c = fmt.charAt(i))) {
-      case 'G': /* General */
-        if(!isgeneral(fmt, i)) throw new Error('unrecognized character ' + c + ' in ' +fmt);
-        out[out.length] = {t:'G', v:'General'}; i+=7; break;
-      case '"': /* Literal text */
-        for(o="";(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) o += String.fromCharCode(cc);
-        out[out.length] = {t:'t', v:o}; ++i; break;
-      case '\\': var w = fmt[++i], t = (w === "(" || w === ")") ? w : 't';
-        out[out.length] = {t:t, v:w}; ++i; break;
-      case '_': out[out.length] = {t:'t', v:" "}; i+=2; break;
-      case '@': /* Text Placeholder */
-        out[out.length] = {t:'T', v:v}; ++i; break;
-      case 'B': case 'b':
-        if(fmt[i+1] === "1" || fmt[i+1] === "2") {
-          if(dt==null) { dt=parse_date_code(v, opts, fmt[i+1] === "2"); if(dt==null) return ""; }
-          out[out.length] = {t:'X', v:fmt.substr(i,2)}; lst = c; i+=2; break;
-        }
-        /* falls through */
-      case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
-        c = c.toLowerCase();
-        /* falls through */
-      case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g':
-        if(v < 0) return "";
-        if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
-        o = c; while(++i<fmt.length && fmt[i].toLowerCase() === c) o+=c;
-        if(c === 'm' && lst.toLowerCase() === 'h') c = 'M'; /* m = minute */
-        if(c === 'h') c = hr;
-        out[out.length] = {t:c, v:o}; lst = c; break;
-      case 'A':
-        q={t:c, v:"A"};
-        if(dt==null) dt=parse_date_code(v, opts);
-        if(fmt.substr(i, 3) === "A/P") { if(dt!=null) q.v = dt.H >= 12 ? "P" : "A"; q.t = 'T'; hr='h';i+=3;}
-        else if(fmt.substr(i,5) === "AM/PM") { if(dt!=null) q.v = dt.H >= 12 ? "PM" : "AM"; q.t = 'T'; i+=5; hr='h'; }
-        else { q.t = "t"; ++i; }
-        if(dt==null && q.t === 'T') return "";
-        out[out.length] = q; lst = c; break;
-      case '[':
-        o = c;
-        while(fmt[i++] !== ']' && i < fmt.length) o += fmt[i];
-        if(o.substr(-1) !== ']') throw 'unterminated "[" block: |' + o + '|';
-        if(o.match(abstime)) {
-          if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
-          out[out.length] = {t:'Z', v:o.toLowerCase()};
-        } else { o=""; }
-        break;
-      /* Numbers */
-      case '.':
-        if(dt != null) {
-          o = c; while((c=fmt[++i]) === "0") o += c;
-          out[out.length] = {t:'s', v:o}; break;
-        }
-        /* falls through */
-      case '0': case '#':
-        o = c; while("0#?.,E+-%".indexOf(c=fmt[++i]) > -1 || c=='\\' && fmt[i+1] == "-" && "0#".indexOf(fmt[i+2])>-1) o += c;
-        out[out.length] = {t:'n', v:o}; break;
-      case '?':
-        o = c; while(fmt[++i] === c) o+=c;
-        q={t:c, v:o}; out[out.length] = q; lst = c; break;
-      case '*': ++i; if(fmt[i] == ' ' || fmt[i] == '*') ++i; break; // **
-      case '(': case ')': out[out.length] = {t:(flen===1?'t':c), v:c}; ++i; break;
-      case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
-        o = c; while("0123456789".indexOf(fmt[++i]) > -1) o+=fmt[i];
-        out[out.length] = {t:'D', v:o}; break;
-      case ' ': out[out.length] = {t:c, v:c}; ++i; break;
-      default:
-        if(",$-+/():!^&'~{}<>=€acfijklopqrtuvwxz".indexOf(c) === -1) throw new Error('unrecognized character ' + c + ' in ' + fmt);
-        out[out.length] = {t:'t', v:c}; ++i; break;
-    }
-  }
-  var bt = 0, ss0 = 0, ssm;
-  for(i=out.length-1, lst='t'; i >= 0; --i) {
-    switch(out[i].t) {
-      case 'h': case 'H': out[i].t = hr; lst='h'; if(bt < 1) bt = 1; break;
-      case 's':
-        if((ssm=out[i].v.match(/\.0+$/))) ss0=Math.max(ss0,ssm[0].length-1);
-        if(bt < 3) bt = 3;
-      /* falls through */
-      case 'd': case 'y': case 'M': case 'e': lst=out[i].t; break;
-      case 'm': if(lst === 's') { out[i].t = 'M'; if(bt < 2) bt = 2; } break;
-      case 'X': if(out[i].v === "B2");
-        break;
-      case 'Z':
-        if(bt < 1 && out[i].v.match(/[Hh]/)) bt = 1;
-        if(bt < 2 && out[i].v.match(/[Mm]/)) bt = 2;
-        if(bt < 3 && out[i].v.match(/[Ss]/)) bt = 3;
-    }
-  }
-  switch(bt) {
-    case 0: break;
-    case 1:
-      /*::if(!dt) break;*/
-      if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
-      if(dt.S >=  60) { dt.S = 0; ++dt.M; }
-      if(dt.M >=  60) { dt.M = 0; ++dt.H; }
-      break;
-    case 2:
-      /*::if(!dt) break;*/
-      if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
-      if(dt.S >=  60) { dt.S = 0; ++dt.M; }
-      break;
-  }
-  /* replace fields */
-  var nstr = "", jj;
-  for(i=0; i < out.length; ++i) {
-    switch(out[i].t) {
-      case 't': case 'T': case ' ': case 'D': break;
-      case 'X': out[i].v = ""; out[i].t = ";"; break;
-      case 'd': case 'm': case 'y': case 'h': case 'H': case 'M': case 's': case 'e': case 'b': case 'Z':
-        /*::if(!dt) throw "unreachable"; */
-        out[i].v = write_date(out[i].t.charCodeAt(0), out[i].v, dt, ss0);
-        out[i].t = 't'; break;
-      case 'n': case '(': case '?':
-        jj = i+1;
-        while(out[jj] != null && (
-          (c=out[jj].t) === "?" || c === "D" ||
-          (c === " " || c === "t") && out[jj+1] != null && (out[jj+1].t === '?' || out[jj+1].t === "t" && out[jj+1].v === '/') ||
-          out[i].t === '(' && (c === ' ' || c === 'n' || c === ')') ||
-          c === 't' && (out[jj].v === '/' || '$€'.indexOf(out[jj].v) > -1 || out[jj].v === ' ' && out[jj+1] != null && out[jj+1].t == '?')
-        )) {
-          out[i].v += out[jj].v;
-          out[jj] = {v:"", t:";"}; ++jj;
-        }
-        nstr += out[i].v;
-        i = jj-1; break;
-      case 'G': out[i].t = 't'; out[i].v = general_fmt(v,opts); break;
-    }
-  }
-  var vv = "", myv, ostr;
-  if(nstr.length > 0) {
-    myv = (v<0&&nstr.charCodeAt(0) === 45 ? -v : v); /* '-' */
-    ostr = write_num(nstr.charCodeAt(0) === 40 ? '(' : 'n', nstr, myv); /* '(' */
-    jj=ostr.length-1;
-    var decpt = out.length;
-    for(i=0; i < out.length; ++i) if(out[i] != null && out[i].v.indexOf(".") > -1) { decpt = i; break; }
-    var lasti=out.length;
-    if(decpt === out.length && ostr.indexOf("E") === -1) {
-      for(i=out.length-1; i>= 0;--i) {
-        if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
-        if(jj>=out[i].v.length-1) { jj -= out[i].v.length; out[i].v = ostr.substr(jj+1, out[i].v.length); }
-        else if(jj < 0) out[i].v = "";
-        else { out[i].v = ostr.substr(0, jj+1); jj = -1; }
-        out[i].t = 't';
-        lasti = i;
-      }
-      if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
-    }
-    else if(decpt !== out.length && ostr.indexOf("E") === -1) {
-      jj = ostr.indexOf(".")-1;
-      for(i=decpt; i>= 0; --i) {
-        if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
-        j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")-1:out[i].v.length-1;
-        vv = out[i].v.substr(j+1);
-        for(; j>=0; --j) {
-          if(jj>=0 && (out[i].v[j] === "0" || out[i].v[j] === "#")) vv = ostr[jj--] + vv;
-        }
-        out[i].v = vv;
-        out[i].t = 't';
-        lasti = i;
-      }
-      if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
-      jj = ostr.indexOf(".")+1;
-      for(i=decpt; i<out.length; ++i) {
-        if(out[i] == null || 'n?('.indexOf(out[i].t) === -1 && i !== decpt ) continue;
-        j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")+1:0;
-        vv = out[i].v.substr(0,j);
-        for(; j<out[i].v.length; ++j) {
-          if(jj<ostr.length) vv += ostr[jj++];
-        }
-        out[i].v = vv;
-        out[i].t = 't';
-        lasti = i;
-      }
-    }
-  }
-  for(i=0; i<out.length; ++i) if(out[i] != null && 'n(?'.indexOf(out[i].t)>-1) {
-    myv = (flen >1 && v < 0 && i>0 && out[i-1].v === "-" ? -v:v);
-    out[i].v = write_num(out[i].t, out[i].v, myv);
-    out[i].t = 't';
-  }
-  var retval = "";
-  for(i=0; i !== out.length; ++i) if(out[i] != null) retval += out[i].v;
-  return retval;
+function fmt_is_date(fmt) {
+	var i = 0, cc = 0, c = "", o = "";
+	while(i < fmt.length) {
+		switch((c = fmt.charAt(i))) {
+			case 'G': if(isgeneral(fmt, i)) i+= 6; i++; break;
+			case '"': for(;(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) ++i; ++i; break;
+			case '\\': i+=2; break;
+			case '_': i+=2; break;
+			case '@': ++i; break;
+			case 'B': case 'b':
+				if(fmt.charAt(i+1) === "1" || fmt.charAt(i+1) === "2") return true;
+				/* falls through */
+			case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
+				/* falls through */
+			case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g': return true;
+			case 'A':
+				if(fmt.substr(i, 3) === "A/P") return true;
+				if(fmt.substr(i, 5) === "AM/PM") return true;
+				++i; break;
+			case '[':
+				o = c;
+				while(fmt.charAt(i++) !== ']' && i < fmt.length) o += fmt.charAt(i);
+				if(o.match(abstime)) return true;
+				break;
+			case '.':
+				/* falls through */
+			case '0': case '#':
+				while(i < fmt.length && ("0#?.,E+-%".indexOf(c=fmt.charAt(++i)) > -1 || c=='\\' && fmt.charAt(i+1) == "-" && "0#".indexOf(fmt.charAt(i+2))>-1));
+				break;
+			case '?': while(fmt.charAt(++i) === c); break;
+			case '*': ++i; if(fmt.charAt(i) == ' ' || fmt.charAt(i) == '*') ++i; break;
+			case '(': case ')': ++i; break;
+			case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
+				while(i < fmt.length && "0123456789".indexOf(fmt.charAt(++i)) > -1); break;
+			case ' ': ++i; break;
+			default: ++i; break;
+		}
+	}
+	return false;
+}
+SSF.is_date = fmt_is_date;
+function eval_fmt(fmt, v, opts, flen) {
+	var out = [], o = "", i = 0, c = "", lst='t', q, dt, j, cc;
+	var hr='H';
+	/* Tokenize */
+	while(i < fmt.length) {
+		switch((c = fmt.charAt(i))) {
+			case 'G': /* General */
+				if(!isgeneral(fmt, i)) throw new Error('unrecognized character ' + c + ' in ' +fmt);
+				out[out.length] = {t:'G', v:'General'}; i+=7; break;
+			case '"': /* Literal text */
+				for(o="";(cc=fmt.charCodeAt(++i)) !== 34 && i < fmt.length;) o += String.fromCharCode(cc);
+				out[out.length] = {t:'t', v:o}; ++i; break;
+			case '\\': var w = fmt.charAt(++i), t = (w === "(" || w === ")") ? w : 't';
+				out[out.length] = {t:t, v:w}; ++i; break;
+			case '_': out[out.length] = {t:'t', v:" "}; i+=2; break;
+			case '@': /* Text Placeholder */
+				out[out.length] = {t:'T', v:v}; ++i; break;
+			case 'B': case 'b':
+				if(fmt.charAt(i+1) === "1" || fmt.charAt(i+1) === "2") {
+					if(dt==null) { dt=parse_date_code(v, opts, fmt.charAt(i+1) === "2"); if(dt==null) return ""; }
+					out[out.length] = {t:'X', v:fmt.substr(i,2)}; lst = c; i+=2; break;
+				}
+				/* falls through */
+			case 'M': case 'D': case 'Y': case 'H': case 'S': case 'E':
+				c = c.toLowerCase();
+				/* falls through */
+			case 'm': case 'd': case 'y': case 'h': case 's': case 'e': case 'g':
+				if(v < 0) return "";
+				if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
+				o = c; while(++i<fmt.length && fmt.charAt(i).toLowerCase() === c) o+=c;
+				if(c === 'm' && lst.toLowerCase() === 'h') c = 'M'; /* m = minute */
+				if(c === 'h') c = hr;
+				out[out.length] = {t:c, v:o}; lst = c; break;
+			case 'A':
+				q={t:c, v:"A"};
+				if(dt==null) dt=parse_date_code(v, opts);
+				if(fmt.substr(i, 3) === "A/P") { if(dt!=null) q.v = dt.H >= 12 ? "P" : "A"; q.t = 'T'; hr='h';i+=3;}
+				else if(fmt.substr(i,5) === "AM/PM") { if(dt!=null) q.v = dt.H >= 12 ? "PM" : "AM"; q.t = 'T'; i+=5; hr='h'; }
+				else { q.t = "t"; ++i; }
+				if(dt==null && q.t === 'T') return "";
+				out[out.length] = q; lst = c; break;
+			case '[':
+				o = c;
+				while(fmt.charAt(i++) !== ']' && i < fmt.length) o += fmt.charAt(i);
+				if(o.slice(-1) !== ']') throw 'unterminated "[" block: |' + o + '|';
+				if(o.match(abstime)) {
+					if(dt==null) { dt=parse_date_code(v, opts); if(dt==null) return ""; }
+					out[out.length] = {t:'Z', v:o.toLowerCase()};
+				} else { o=""; }
+				break;
+			/* Numbers */
+			case '.':
+				if(dt != null) {
+					o = c; while((c=fmt.charAt(++i)) === "0") o += c;
+					out[out.length] = {t:'s', v:o}; break;
+				}
+				/* falls through */
+			case '0': case '#':
+				o = c; while(++i < fmt.length && "0#?.,E+-%".indexOf(c=fmt.charAt(i)) > -1 || c=='\\' && fmt.charAt(i+1) == "-" && "0#".indexOf(fmt.charAt(i+2))>-1) o += c;
+				out[out.length] = {t:'n', v:o}; break;
+			case '?':
+				o = c; while(fmt.charAt(++i) === c) o+=c;
+				q={t:c, v:o}; out[out.length] = q; lst = c; break;
+			case '*': ++i; if(fmt.charAt(i) == ' ' || fmt.charAt(i) == '*') ++i; break; // **
+			case '(': case ')': out[out.length] = {t:(flen===1?'t':c), v:c}; ++i; break;
+			case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
+				o = c; while(i < fmt.length && "0123456789".indexOf(fmt.charAt(++i)) > -1) o+=fmt.charAt(i);
+				out[out.length] = {t:'D', v:o}; break;
+			case ' ': out[out.length] = {t:c, v:c}; ++i; break;
+			default:
+				if(",$-+/():!^&'~{}<>=€acfijklopqrtuvwxz".indexOf(c) === -1) throw new Error('unrecognized character ' + c + ' in ' + fmt);
+				out[out.length] = {t:'t', v:c}; ++i; break;
+		}
+	}
+	var bt = 0, ss0 = 0, ssm;
+	for(i=out.length-1, lst='t'; i >= 0; --i) {
+		switch(out[i].t) {
+			case 'h': case 'H': out[i].t = hr; lst='h'; if(bt < 1) bt = 1; break;
+			case 's':
+				if((ssm=out[i].v.match(/\.0+$/))) ss0=Math.max(ss0,ssm[0].length-1);
+				if(bt < 3) bt = 3;
+			/* falls through */
+			case 'd': case 'y': case 'M': case 'e': lst=out[i].t; break;
+			case 'm': if(lst === 's') { out[i].t = 'M'; if(bt < 2) bt = 2; } break;
+			case 'X': if(out[i].v === "B2");
+				break;
+			case 'Z':
+				if(bt < 1 && out[i].v.match(/[Hh]/)) bt = 1;
+				if(bt < 2 && out[i].v.match(/[Mm]/)) bt = 2;
+				if(bt < 3 && out[i].v.match(/[Ss]/)) bt = 3;
+		}
+	}
+	switch(bt) {
+		case 0: break;
+		case 1:
+if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
+			if(dt.S >=  60) { dt.S = 0; ++dt.M; }
+			if(dt.M >=  60) { dt.M = 0; ++dt.H; }
+			break;
+		case 2:
+if(dt.u >= 0.5) { dt.u = 0; ++dt.S; }
+			if(dt.S >=  60) { dt.S = 0; ++dt.M; }
+			break;
+	}
+	/* replace fields */
+	var nstr = "", jj;
+	for(i=0; i < out.length; ++i) {
+		switch(out[i].t) {
+			case 't': case 'T': case ' ': case 'D': break;
+			case 'X': out[i].v = ""; out[i].t = ";"; break;
+			case 'd': case 'm': case 'y': case 'h': case 'H': case 'M': case 's': case 'e': case 'b': case 'Z':
+out[i].v = write_date(out[i].t.charCodeAt(0), out[i].v, dt, ss0);
+				out[i].t = 't'; break;
+			case 'n': case '(': case '?':
+				jj = i+1;
+				while(out[jj] != null && (
+					(c=out[jj].t) === "?" || c === "D" ||
+					(c === " " || c === "t") && out[jj+1] != null && (out[jj+1].t === '?' || out[jj+1].t === "t" && out[jj+1].v === '/') ||
+					out[i].t === '(' && (c === ' ' || c === 'n' || c === ')') ||
+					c === 't' && (out[jj].v === '/' || '$€'.indexOf(out[jj].v) > -1 || out[jj].v === ' ' && out[jj+1] != null && out[jj+1].t == '?')
+				)) {
+					out[i].v += out[jj].v;
+					out[jj] = {v:"", t:";"}; ++jj;
+				}
+				nstr += out[i].v;
+				i = jj-1; break;
+			case 'G': out[i].t = 't'; out[i].v = general_fmt(v,opts); break;
+		}
+	}
+	var vv = "", myv, ostr;
+	if(nstr.length > 0) {
+		myv = (v<0&&nstr.charCodeAt(0) === 45 ? -v : v); /* '-' */
+		ostr = write_num(nstr.charCodeAt(0) === 40 ? '(' : 'n', nstr, myv); /* '(' */
+		jj=ostr.length-1;
+		var decpt = out.length;
+		for(i=0; i < out.length; ++i) if(out[i] != null && out[i].v.indexOf(".") > -1) { decpt = i; break; }
+		var lasti=out.length;
+		if(decpt === out.length && ostr.indexOf("E") === -1) {
+			for(i=out.length-1; i>= 0;--i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
+				if(jj>=out[i].v.length-1) { jj -= out[i].v.length; out[i].v = ostr.substr(jj+1, out[i].v.length); }
+				else if(jj < 0) out[i].v = "";
+				else { out[i].v = ostr.substr(0, jj+1); jj = -1; }
+				out[i].t = 't';
+				lasti = i;
+			}
+			if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
+		}
+		else if(decpt !== out.length && ostr.indexOf("E") === -1) {
+			jj = ostr.indexOf(".")-1;
+			for(i=decpt; i>= 0; --i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1) continue;
+				j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")-1:out[i].v.length-1;
+				vv = out[i].v.substr(j+1);
+				for(; j>=0; --j) {
+					if(jj>=0 && (out[i].v[j] === "0" || out[i].v[j] === "#")) vv = ostr[jj--] + vv;
+				}
+				out[i].v = vv;
+				out[i].t = 't';
+				lasti = i;
+			}
+			if(jj>=0 && lasti<out.length) out[lasti].v = ostr.substr(0,jj+1) + out[lasti].v;
+			jj = ostr.indexOf(".")+1;
+			for(i=decpt; i<out.length; ++i) {
+				if(out[i] == null || 'n?('.indexOf(out[i].t) === -1 && i !== decpt ) continue;
+				j=out[i].v.indexOf(".")>-1&&i===decpt?out[i].v.indexOf(".")+1:0;
+				vv = out[i].v.substr(0,j);
+				for(; j<out[i].v.length; ++j) {
+					if(jj<ostr.length) vv += ostr[jj++];
+				}
+				out[i].v = vv;
+				out[i].t = 't';
+				lasti = i;
+			}
+		}
+	}
+	for(i=0; i<out.length; ++i) if(out[i] != null && 'n(?'.indexOf(out[i].t)>-1) {
+		myv = (flen >1 && v < 0 && i>0 && out[i-1].v === "-" ? -v:v);
+		out[i].v = write_num(out[i].t, out[i].v, myv);
+		out[i].t = 't';
+	}
+	var retval = "";
+	for(i=0; i !== out.length; ++i) if(out[i] != null) retval += out[i].v;
+	return retval;
 }
 SSF._eval = eval_fmt;
 var cfregex = /\[[=<>]/;
 var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
 function chkcond(v, rr) {
-  if(rr == null) return false;
-  var thresh = parseFloat(rr[2]);
-  switch(rr[1]) {
-    case "=":  if(v == thresh) return true; break;
-    case ">":  if(v >  thresh) return true; break;
-    case "<":  if(v <  thresh) return true; break;
-    case "<>": if(v != thresh) return true; break;
-    case ">=": if(v >= thresh) return true; break;
-    case "<=": if(v <= thresh) return true; break;
-  }
-  return false;
+	if(rr == null) return false;
+	var thresh = parseFloat(rr[2]);
+	switch(rr[1]) {
+		case "=":  if(v == thresh) return true; break;
+		case ">":  if(v >  thresh) return true; break;
+		case "<":  if(v <  thresh) return true; break;
+		case "<>": if(v != thresh) return true; break;
+		case ">=": if(v >= thresh) return true; break;
+		case "<=": if(v <= thresh) return true; break;
+	}
+	return false;
 }
-function choose_fmt(f/*:string*/, v) {
-  var fmt = split_fmt(f);
-  var l = fmt.length, lat = fmt[l-1].indexOf("@");
-  if(l<4 && lat>-1) --l;
-  if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
-  if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
-  switch(fmt.length) {
-    case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
-    case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
-    case 3: fmt = lat>-1 ? [fmt[0], fmt[1], fmt[0], fmt[2]] : [fmt[0], fmt[1], fmt[2], "@"]; break;
-    case 4: break;
-  }
-  var ff = v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
-  if(fmt[0].indexOf("[") === -1 && fmt[1].indexOf("[") === -1) return [l, ff];
-  if(fmt[0].match(cfregex) != null || fmt[1].match(cfregex) != null) {
-    var m1 = fmt[0].match(cfregex2);
-    var m2 = fmt[1].match(cfregex2);
-    return chkcond(v, m1) ? [l, fmt[0]] : chkcond(v, m2) ? [l, fmt[1]] : [l, fmt[m1 != null && m2 != null ? 2 : 1]];
-  }
-  return [l, ff];
+function choose_fmt(f, v) {
+	var fmt = split_fmt(f);
+	var l = fmt.length, lat = fmt[l-1].indexOf("@");
+	if(l<4 && lat>-1) --l;
+	if(fmt.length > 4) throw new Error("cannot find right format for |" + fmt.join("|") + "|");
+	if(typeof v !== "number") return [4, fmt.length === 4 || lat>-1?fmt[fmt.length-1]:"@"];
+	switch(fmt.length) {
+		case 1: fmt = lat>-1 ? ["General", "General", "General", fmt[0]] : [fmt[0], fmt[0], fmt[0], "@"]; break;
+		case 2: fmt = lat>-1 ? [fmt[0], fmt[0], fmt[0], fmt[1]] : [fmt[0], fmt[1], fmt[0], "@"]; break;
+		case 3: fmt = lat>-1 ? [fmt[0], fmt[1], fmt[0], fmt[2]] : [fmt[0], fmt[1], fmt[2], "@"]; break;
+		case 4: break;
+	}
+	var ff = v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
+	if(fmt[0].indexOf("[") === -1 && fmt[1].indexOf("[") === -1) return [l, ff];
+	if(fmt[0].match(cfregex) != null || fmt[1].match(cfregex) != null) {
+		var m1 = fmt[0].match(cfregex2);
+		var m2 = fmt[1].match(cfregex2);
+		return chkcond(v, m1) ? [l, fmt[0]] : chkcond(v, m2) ? [l, fmt[1]] : [l, fmt[m1 != null && m2 != null ? 2 : 1]];
+	}
+	return [l, ff];
 }
-function format(fmt/*:string|number*/,v/*:any*/,o/*:?any*/) {
-  fixopts(o != null ? o : (o=[]));
-  var sfmt = "";
-  switch(typeof fmt) {
-    case "string": sfmt = fmt; break;
-    case "number": sfmt = (o.table != null ? (o.table/*:any*/) : table_fmt)[fmt]; break;
-  }
-  if(isgeneral(sfmt,0)) return general_fmt(v, o);
-  var f = choose_fmt(sfmt, v);
-  if(isgeneral(f[1])) return general_fmt(v, o);
-  if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
-  else if(v === "" || v == null) return "";
-  return eval_fmt(f[1], v, o, f[0]);
+function format(fmt,v,o) {
+	fixopts(o != null ? o : (o=[]));
+	var sfmt = "";
+	switch(typeof fmt) {
+		case "string": sfmt = fmt; break;
+		case "number": sfmt = (o.table != null ? (o.table) : table_fmt)[fmt]; break;
+	}
+	if(isgeneral(sfmt,0)) return general_fmt(v, o);
+	var f = choose_fmt(sfmt, v);
+	if(isgeneral(f[1])) return general_fmt(v, o);
+	if(v === true) v = "TRUE"; else if(v === false) v = "FALSE";
+	else if(v === "" || v == null) return "";
+	return eval_fmt(f[1], v, o, f[0]);
 }
 SSF._table = table_fmt;
-SSF.load = function load_entry(fmt/*:string*/, idx/*:number*/) { table_fmt[idx] = fmt; };
+SSF.load = function load_entry(fmt, idx) { table_fmt[idx] = fmt; };
 SSF.format = format;
 SSF.get_table = function get_table() { return table_fmt; };
-SSF.load_table = function load_table(tbl/*:{[n:number]:string}*/) { for(var i=0; i!=0x0188; ++i) if(tbl[i] !== undefined) SSF.load(tbl[i], i); };
+SSF.load_table = function load_table(tbl) { for(var i=0; i!=0x0188; ++i) if(tbl[i] !== undefined) SSF.load(tbl[i], i); };
 };
 make_ssf(SSF);
 /*global module */
-/*:: declare var DO_NOT_EXPORT_SSF: any; */
 if(typeof module !== 'undefined' && typeof DO_NOT_EXPORT_SSF === 'undefined') module.exports = SSF;
diff --git a/ssf.md b/ssf.md
index 3695a90..38456f7 100644
--- a/ssf.md
+++ b/ssf.md
@@ -8,7 +8,7 @@ spreadsheet format codes.
 The various API functions take an `opts` argument which control parsing.  The
 default options are described below:
 
-```js>tmp/10_opts.js
+```js>bits/10_opts.js
 /* Options */
 var opts_fmt/*:Array<Array<any> >*/ = [
 ```
@@ -59,7 +59,7 @@ numbers, zero values, and text, in that order.
 Semicolons can be escaped with the `\` character, so we need to split on those
 semicolons that aren't prefaced by a slash or within a quoted string:
 
-```js>tmp/80_split.js
+```js>bits/80_split.js
 function split_fmt(fmt/*:string*/)/*:Array<string>*/ {
   var out/*:Array<string>*/ = [];
   var in_str = false, cc;
@@ -116,7 +116,7 @@ as the last format.
 
 ## Utility Functions
 
-```js>tmp/02_utilities.js
+```js>bits/02_utilities.js
 function _strrev(x/*:string*/)/*:string*/ { var o = "", i = x.length-1; while(i>=0) o += x.charAt(i--); return o; }
 function fill(c/*:string*/,l/*:number*/)/*:string*/ { var o = ""; while(o.length < l) o+=c; return o; }
 ```
@@ -148,7 +148,7 @@ of its abilities given the knowledge.
 First: 32-bit integers in base 10 are shorter than 11 characters, so they will
 always be written in full:
 
-```js>tmp/40_general.js
+```js>bits/40_general.js
 function general_fmt_int(v/*:number*/, opts/*:?any*/)/*:string*/ { return ""+v; }
 SSF._general_int = general_fmt_int;
 ```
@@ -191,7 +191,7 @@ SSF._general_num = general_fmt_num;
 
 Finally
 
-```js>tmp/40_general.js
+```js>bits/40_general.js
 function general_fmt(v/*:any*/, opts/*:?any*/) {
   switch(typeof v) {
 ```
@@ -228,7 +228,7 @@ SSF._general = general_fmt;
 These are the commonly-used formats that have a special implied code.
 None of the international formats are included here.
 
-```js>tmp/20_consts.js
+```js>bits/20_consts.js
 var table_fmt = {
   /*::[*/0/*::]*/:  'General',
   /*::[*/1/*::]*/:  '0',
@@ -285,7 +285,7 @@ some writers erroneously emit 65535 for general:
 
 The code `ddd` displays short day-of-week and `dddd` shows long day-of-week:
 
-```js>tmp/20_consts.js
+```js>bits/20_consts.js
 var days = [
   ['Sun', 'Sunday'],
   ['Mon', 'Monday'],
@@ -325,7 +325,7 @@ portion of a 24 hour day).
 
 Excel supports the alternative Hijri calendar (indicated with `b2`):
 
-```js>tmp/50_date.js
+```js>bits/50_date.js
 function parse_date_code(v/*:number*/,opts/*:?any*/,b2/*:?boolean*/) {
 ```
 
@@ -417,7 +417,7 @@ SSF.parse_date_code = parse_date_code;
 
 TODO: suitable hijri correction
 
-```js>tmp/45_hijri.js
+```js>bits/45_hijri.js
 function fix_hijri(date, o) { return 0; }
 ```
 
@@ -425,7 +425,7 @@ function fix_hijri(date, o) { return 0; }
 
 The utility `commaify` adds commas to integers:
 
-```js>tmp/56_commaify.js
+```js>bits/56_commaify.js
 function commaify(s/*:string*/)/*:string*/ {
   if(s.length <= 3) return s;
   var j = (s.length % 3), o = s.substr(0,j);
@@ -436,7 +436,7 @@ function commaify(s/*:string*/)/*:string*/ {
 
 `write_num` is broken into sub-functions to help with optimization:
 
-```js>tmp/57_numhead.js
+```js>bits/57_numhead.js
 var write_num = (function make_write_num(){
 ```
 
@@ -444,7 +444,7 @@ var write_num = (function make_write_num(){
 
 The underlying number for the percentages should be physically shifted:
 
-```js>tmp/59_numhelp.js
+```js>bits/59_numhelp.js
 var pct1 = /%/g;
 function write_num_pct(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
   var sfmt = fmt.replace(pct1,""), mul = fmt.length - sfmt.length;
@@ -457,7 +457,7 @@ function write_num_pct(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string
 Formats with multiple commas after the decimal point should be shifted by the
 appropiate multiple of 1000 (more magic):
 
-```js>tmp/60_number.js
+```js>bits/60_number.js
 function write_num_cm(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
   var idx = fmt.length - 1;
   while(fmt.charCodeAt(idx-1) === 44) --idx;
@@ -562,7 +562,7 @@ function write_num_flt(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string
 
 For parentheses, explicitly resolve the sign issue:
 
-```js>tmp/60_number.js
+```js>bits/60_number.js
   if(type.charCodeAt(0) === 40 && !fmt.match(closeparen)) {
     var ffmt = fmt.replace(/\( */,"").replace(/ \)/,"").replace(/\)/,"");
     if(val >= 0) return write_num_flt('n', ffmt, val);
@@ -575,7 +575,7 @@ Helpers are used for:
 - Trailing commas
 - Exponentials
 
-```js>tmp/60_number.js
+```js>bits/60_number.js
   if(fmt.charCodeAt(fmt.length - 1) === 44) return write_num_cm(type, fmt, val);
   if(fmt.indexOf('%') !== -1) return write_num_pct(type, fmt, val);
   if(fmt.indexOf('E') !== -1) return write_num_exp(fmt, val);
@@ -691,7 +691,7 @@ The general class `/^[#0?]+$/` treats the '0' as literal, '#' as noop, '?' as sp
 
 The default cases are hard-coded.  TODO: actually parse them
 
-```js>tmp/60_number.js
+```js>bits/60_number.js
   if((r = fmt.match(/^00,000\.([#0]*0)$/))) {
     ri = dec(val, r[1].length);
 ```
@@ -707,7 +707,7 @@ Note that this is technically incorrect
 
 For now, the default case is an error:
 
-```js>tmp/60_number.js
+```js>bits/60_number.js
     default:
   }
   throw new Error("unsupported format |" + fmt + "|");
@@ -839,7 +839,7 @@ return function write_num(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:str
 
 ## Evaluating Format Strings
 
-```js>tmp/82_eval.js
+```js>bits/82_eval.js
 var abstime = /\[[HhMmSs]*\]/;
 function eval_fmt(fmt/*:string*/, v/*:any*/, opts/*:any*/, flen/*:number*/) {
   var out = [], o = "", i = 0, c = "", lst='t', q, dt, j, cc;
@@ -1197,7 +1197,7 @@ There is some overloading of the `m` character.  According to the spec:
 hours) or immediately before the "ss" code (for seconds), the application shall
 display minutes instead of the month.
 
-```js>tmp/50_date.js
+```js>bits/50_date.js
 /*jshint -W086 */
 function write_date(type/*:number*/, fmt/*:string*/, val, ss0/*:?number*/)/*:string*/ {
   var o="", ss=0, tt=0, y = val.y, out, outl = 0;
@@ -1322,7 +1322,7 @@ it is not exported and is only called when the type is in `ymdhHMsZe`
 Based on the value, `choose_fmt` picks the right format string.  If formats have
 explicit negative specifications, those values should be passed as positive:
 
-```js>tmp/90_main.js
+```js>bits/90_main.js
 function choose_fmt(f/*:string*/, v) {
   var fmt = split_fmt(f);
   var l = fmt.length, lat = fmt[l-1].indexOf("@");
@@ -1357,7 +1357,7 @@ it is treated as the text format
 Here we have to scan for conditions.  Note that the grammar precludes decimals
 but in practice they are fair game:
 
-```js>tmp/88_cond.js
+```js>bits/88_cond.js
 var cfregex = /\[[=<>]/;
 var cfregex2 = /\[([=<>]*)(-?\d+\.?\d*)\]/;
 function chkcond(v, rr) {
@@ -1377,7 +1377,7 @@ function chkcond(v, rr) {
 
 The main function checks for conditional operators and acts accordingly:
 
-```js>tmp/90_main.js
+```js>bits/90_main.js
   var ff = v > 0 ? fmt[0] : v < 0 ? fmt[1] : fmt[2];
   if(fmt[0].indexOf("[") === -1 && fmt[1].indexOf("[") === -1) return [l, ff];
   if(fmt[0].match(cfregex) != null || fmt[1].match(cfregex) != null) {
@@ -1431,7 +1431,7 @@ Empty string should always emit empty, even if there are other characters:
 The methods beginning with an underscore are subject to change and should not be
 used directly in programs.
 
-```js>tmp/98_exports.js
+```js>bits/98_exports.js
 SSF._table = table_fmt;
 SSF.load = function load_entry(fmt/*:string*/, idx/*:number*/) { table_fmt[idx] = fmt; };
 SSF.format = format;
@@ -1448,7 +1448,7 @@ SSF.load_table = function load_table(tbl/*:{[n:number]:string}*/) { for(var i=0;
 
 The implementation is from [our frac library](https://github.com/SheetJS/frac/):
 
-```js>tmp/30_frac.js
+```js>bits/30_frac.js
 function frac(x, D, mixed) {
   var sgn = x < 0 ? -1 : 1;
   var B = x * sgn;
@@ -1475,14 +1475,14 @@ function frac(x, D, mixed) {
 
 ## JS Boilerplate
 
-```js>tmp/00_header.js
+```js>bits/00_header.js
 /* ssf.js (C) 2013-present SheetJS -- http://sheetjs.com */
 /*jshint -W041 */
 var SSF = {};
 var make_ssf = function make_ssf(SSF){
 ```
 
-```js>tmp/99_footer.js
+```js>bits/99_footer.js
 };
 make_ssf(SSF);
 /*global module */
diff --git a/test/is_date.json b/test/is_date.json
new file mode 100644
index 0000000..d15c9e4
--- /dev/null
+++ b/test/is_date.json
@@ -0,0 +1,447 @@
+[
+	["General", false],
+	["yyyy", true],
+	["\" Excellent\"", false],
+	["\" Fair\"", false],
+	["\" Good\"", false],
+	["\" Poor\"", false],
+	["\" Very Good\"", false],
+	["\"$\"#,##0", false],
+	["\"$\"#,##0.00", false],
+	["\"$\"#,##0.00_);[Red]\\(\"$\"#,##0.00\\)", false],
+	["\"$\"#,##0.00_);\\(\"$\"#,##0.00\\)", false],
+	["\"$\"#,##0;[Red]\\-\"$\"#,##0", false],
+	["\"$\"#,##0_);[Red]\\(\"$\"#,##0\\)", false],
+	["\"$\"#,##0_);\\(\"$\"#,##0\\)", false],
+	["\"Haha!\"\\ @\\ \"Yeah!\"", false],
+	["\"TRUE\";\"TRUE\";\"FALSE\"", false],
+	["\"True\";\"True\";\"False\";@", false],
+	["\"Years: \"0", false],
+	["\"Yes\";\"Yes\";\"No\";@", false],
+	["\"kl \"hh:mm:ss;@", false],
+	["\"£\"#,##0.00", false],
+	["\"£\"#,##0;[Red]\\-\"£\"#,##0", false],
+	["\"€\"#,##0.00", false],
+	["\"€\"\\ #,##0.00_-", false],
+	["\"上午/下午 \"hh\"時\"mm\"分\"ss\"秒 \"", true],
+	["\"￥\"#,##0.00;\"￥\"\\-#,##0.00", false],
+	["#", false],
+	["# ?/?", false],
+	["# ??/??", false],
+	["#\" \"?/?", false],
+	["#\" \"??/??", false],
+	["#\"abded\"\\ ??/??", false],
+	["###0.00;-###0.00", false],
+	["###0;-###0", false],
+	["##0.0E+0", false],
+	["#,##0", false],
+	["#,##0 ;(#,##0)", false],
+	["#,##0 ;[Red](#,##0)", false],
+	["#,##0\"р.\";[Red]\\-#,##0\"р.\"", false],
+	["#,##0.0", false],
+	["#,##0.00", false],
+	["#,##0.00 \"�\"", false],
+	["#,##0.00 €;-#,##0.00 €", false],
+	["#,##0.00\"р.\";[Red]\\-#,##0.00\"р.\"", false],
+	["#,##0.000", false],
+	["#,##0.0000", false],
+	["#,##0.00000", false],
+	["#,##0.000000", false],
+	["#,##0.0000000", false],
+	["#,##0.00000000", false],
+	["#,##0.000000000", false],
+	["#,##0.00000000;[Red]#,##0.00000000", false],
+	["#,##0.0000_ ", false],
+	["#,##0.000_ ", false],
+	["#,##0.000_);\\(#,##0.000\\)", false],
+	["#,##0.00;(#,##0.00)", false],
+	["#,##0.00;(#,##0.00);0.00", false],
+	["#,##0.00;[Red](#,##0.00)", false],
+	["#,##0.00;[Red]\\(#,##0.00\\)", false],
+	["#,##0.00;\\(#,##0.00\\)", false],
+	["#,##0.00[$₹-449]_);\\(#,##0.00[$₹-449]\\)", false],
+	["#,##0.00\\ \"р.\"", false],
+	["#,##0.00\\ \"р.\";[Red]\\-#,##0.00\\ \"р.\"", false],
+	["#,##0.00\\ [$€-407]", false],
+	["#,##0.00\\ [$€-40C]", false],
+	["#,##0.00_);\\(#,##0.00\\)", false],
+	["#,##0.00_р_.;[Red]\\-#,##0.00_р_.", false],
+	["#,##0.00_р_.;\\-#,##0.00_р_.", false],
+	["#,##0.0;[Red]#,##0.0", false],
+	["#,##0.0_ ;\\-#,##0.0\\ ", false],
+	["#,##0.0_);[Red]\\(#,##0.0\\)", false],
+	["#,##0.0_);\\(#,##0.0\\)", false],
+	["#,##0;\\-#,##0;0", false],
+	["#,##0\\ \"р.\";[Red]\\-#,##0\\ \"р.\"", false],
+	["#,##0\\ \"р.\";\\-#,##0\\ \"р.\"", false],
+	["#,##0\\ ;[Red]\\(#,##0\\)", false],
+	["#,##0\\ ;\\(#,##0\\)", false],
+	["#,##0_ ", false],
+	["#,##0_ ;[Red]\\-#,##0\\ ", false],
+	["#,##0_);[Red]\\(#,##0\\)", false],
+	["#,##0_р_.;[Red]\\-#,##0_р_.", false],
+	["#,##0_р_.;\\-#,##0_р_.", false],
+	["#.0000,,", false],
+	["#0", false],
+	["#0.00", false],
+	["#0.0000", false],
+	["#\\ ?/10", false],
+	["#\\ ?/2", false],
+	["#\\ ?/4", false],
+	["#\\ ?/8", false],
+	["#\\ ?/?", false],
+	["#\\ ??/100", false],
+	["#\\ ??/100;[Red]\\(#\\ ??/16\\)", false],
+	["#\\ ??/16", false],
+	["#\\ ??/??", false],
+	["#\\ ??/?????????", false],
+	["#\\ ???/???", false],
+	["**\\ #,###,#00,000.00,**", false],
+	["0", false],
+	["0\"abde\".0\"??\"000E+00", false],
+	["0%", false],
+	["0.0", false],
+	["0.0%", false],
+	["0.00", false],
+	["0.00\"°\"", false],
+	["0.00%", false],
+	["0.000", false],
+	["0.000%", false],
+	["0.0000", false],
+	["0.000000", false],
+	["0.00000000", false],
+	["0.000000000", false],
+	["0.000000000%", false],
+	["0.00000000000", false],
+	["0.000000000000000", false],
+	["0.00000000E+00", false],
+	["0.0000E+00", false],
+	["0.00;[Red]0.00", false],
+	["0.00E+00", false],
+	["0.00_);[Red]\\(0.00\\)", false],
+	["0.00_);\\(0.00\\)", false],
+	["0.0_ ", false],
+	["00.00.00.000", false],
+	["00.000%", false],
+	["0000", false],
+	["00000", false],
+	["00000000", false],
+	["000000000", false],
+	["00000\\-0000", false],
+	["00000\\-00000", false],
+	["000\\-00\\-0000", false],
+	["0;[Red]0", false],
+	["0\\-00000\\-00000\\-0", false],
+	["0_);[Red]\\(0\\)", false],
+	["0_);\\(0\\)", false],
+	["@", false],
+	["A/P", true],
+	["AM/PM", true],
+	["AM/PMh\"時\"mm\"分\"ss\"秒\";@", true],
+	["D", true],
+	["DD", true],
+	["DD/MM/YY;@", true],
+	["DD/MM/YYYY", true],
+	["DD/MM/YYYY;@", true],
+	["DDD", true],
+	["DDDD", true],
+	["DDDD\", \"MMMM\\ DD\", \"YYYY", true],
+	["GENERAL", false],
+	["General", false],
+	["H", true],
+	["H:MM:SS\\ AM/PM", true],
+	["HH:MM", true],
+	["HH:MM:SS\\ AM/PM", true],
+	["HHM", true],
+	["HHMM", true],
+	["HH[MM]", true],
+	["HH[M]", true],
+	["M/D/YYYY", true],
+	["M/D/YYYY\\ H:MM", true],
+	["MM/DD/YY", true],
+	["S", true],
+	["SS", true],
+	["YY", true],
+	["YYM", true],
+	["YYMM", true],
+	["YYMMM", true],
+	["YYMMMM", true],
+	["YYMMMMM", true],
+	["YYYY", true],
+	["YYYY-MM-DD HH:MM:SS", true],
+	["YYYY\\-MM\\-DD", true],
+	["[$$-409]#,##0", false],
+	["[$$-409]#,##0.00", false],
+	["[$$-409]#,##0.00_);[Red]\\([$$-409]#,##0.00\\)", false],
+	["[$$-C09]#,##0.00", false],
+	["[$-100042A]h:mm:ss\\ AM/PM;@", true],
+	["[$-1010409]0.000%", false],
+	["[$-1010409]General", false],
+	["[$-1010409]d/m/yyyy\\ h:mm\\ AM/PM;@", true],
+	["[$-1010409]dddd, mmmm dd, yyyy", true],
+	["[$-1010409]m/d/yyyy", true],
+	["[$-1409]h:mm:ss\\ AM/PM;@", true],
+	["[$-2000000]h:mm:ss;@", true],
+	["[$-2010401]d/mm/yyyy\\ h:mm\\ AM/PM;@", true],
+	["[$-4000439]h:mm:ss\\ AM/PM;@", true],
+	["[$-4010439]d/m/yyyy\\ h:mm\\ AM/PM;@", true],
+	["[$-409]AM/PM\\ hh:mm:ss;@", true],
+	["[$-409]d/m/yyyy\\ hh:mm;@", true],
+	["[$-409]d\\-mmm;@", true],
+	["[$-409]d\\-mmm\\-yy;@", true],
+	["[$-409]d\\-mmm\\-yyyy;@", true],
+	["[$-409]dd/mm/yyyy\\ hh:mm;@", true],
+	["[$-409]dd\\-mmm\\-yy;@", true],
+	["[$-409]h:mm:ss\\ AM/PM;@", true],
+	["[$-409]h:mm\\ AM/PM;@", true],
+	["[$-409]m/d/yy\\ h:mm\\ AM/PM;@", true],
+	["[$-409]mmm\\-yy;@", true],
+	["[$-409]mmmm\\ d\\,\\ yyyy;@", true],
+	["[$-409]mmmm\\-yy;@", true],
+	["[$-409]mmmmm;@", true],
+	["[$-409]mmmmm\\-yy;@", true],
+	["[$-40E]h\\ \"óra\"\\ m\\ \"perckor\"\\ AM/PM;@", true],
+	["[$-412]AM/PM\\ h\"시\"\\ mm\"분\"\\ ss\"초\";@", true],
+	["[$-41C]h:mm:ss\\.AM/PM;@", true],
+	["[$-449]hh:mm:ss\\ AM/PM;@", true],
+	["[$-44E]hh:mm:ss\\ AM/PM;@", true],
+	["[$-44F]hh:mm:ss\\ AM/PM;@", true],
+	["[$-D000409]h:mm\\ AM/PM;@", true],
+	["[$-D010000]d/mm/yyyy\\ h:mm\\ \"น.\";@", true],
+	["[$-F400]h:mm:ss\\ AM/PM", true],
+	["[$-F800]dddd\\,\\ mmmm\\ dd\\,\\ yyyy", true],
+	["[$AUD]\\ #,##0.00", false],
+	["[$RD$-1C0A]#,##0.00;[Red]\\-[$RD$-1C0A]#,##0.00", false],
+	["[$SFr.-810]\\ #,##0.00_);[Red]\\([$SFr.-810]\\ #,##0.00\\)", false],
+	["[$£-809]#,##0.00;[Red][$£-809]#,##0.00", false],
+	["[$¥-411]#,##0.00", false],
+	["[$¥-804]#,##0.00", false],
+	["[<0]\"\";0%", false],
+	["[<=9999999]###\\-####;\\(###\\)\\ ###\\-####", false],
+	["[=0]?;#,##0.00", false],
+	["[=0]?;0%", false],
+	["[=0]?;[<4.16666666666667][hh]:mm:ss;[hh]:mm", true],
+	["[>999999]#,,\"M\";[>999]#,\"K\";#", false],
+	["[>999999]#.000,,\"M\";[>999]#.000,\"K\";#.000", false],
+	["[>=100000]0.000\\ \\\";[Red]0.000\\ \\<\\ \\>\\ \\\"\\ \\&\\ \\'\\ ", false],
+	["[>=100000]0.000\\ \\<;[Red]0.000\\ \\>", false],
+	["[BLACK]@", false],
+	["[BLUE]GENERAL", false],
+	["[Black]@", false],
+	["[Blue]General", false],
+	["[CYAN]@", false],
+	["[Cyan]@", false],
+	["[DBNum1][$-804]AM/PMh\"时\"mm\"分\";@", true],
+	["[DBNum1][$-804]General", false],
+	["[DBNum1][$-804]h\"时\"mm\"分\";@", true],
+	["[ENG][$-1004]dddd\\,\\ d\\ mmmm\\,\\ yyyy;@", true],
+	["[ENG][$-101040D]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-101042A]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-140C]dddd\\ \"YeahWoo!\"\\ ddd\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-2C0A]dddd\\ d\" de \"mmmm\" de \"yyyy;@", true],
+	["[ENG][$-402]dd\\ mmmm\\ yyyy\\ \"г.\";@", true],
+	["[ENG][$-403]dddd\\,\\ d\" / \"mmmm\" / \"yyyy;@", true],
+	["[ENG][$-405]d\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-408]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-409]d\\-mmm;@", true],
+	["[ENG][$-409]d\\-mmm\\-yy;@", true],
+	["[ENG][$-409]d\\-mmm\\-yyyy;@", true],
+	["[ENG][$-409]dd\\-mmm\\-yy;@", true],
+	["[ENG][$-409]mmm\\-yy;@", true],
+	["[ENG][$-409]mmmm\\ d\\,\\ yyyy;@", true],
+	["[ENG][$-409]mmmm\\-yy;@", true],
+	["[ENG][$-40B]d\\.\\ mmmm\\t\\a\\ yyyy;@", true],
+	["[ENG][$-40C]d/mmm/yyyy;@", true],
+	["[ENG][$-40E]yyyy/\\ mmmm\\ d\\.;@", true],
+	["[ENG][$-40F]dd\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-410]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-415]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-416]d\\ \\ mmmm\\,\\ yyyy;@", true],
+	["[ENG][$-418]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-41A]d\\.\\ mmmm\\ yyyy\\.;@", true],
+	["[ENG][$-41B]d\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-41D]\"den \"\\ d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-420]dddd\\,\\ dd\\ mmmm\\,\\ yyyy;@", true],
+	["[ENG][$-421]dd\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-424]dddd\\,\\ d\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-425]dddd\\,\\ d\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-426]dddd\\,\\ yyyy\". gada \"d\\.\\ mmmm;@", true],
+	["[ENG][$-427]yyyy\\ \"m.\"\\ mmmm\\ d\\ \"d.\";@", true],
+	["[ENG][$-42B]dddd\\,\\ d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-42C]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-42D]yyyy\"(e)ko\"\\ mmmm\"ren\"\\ d\"a\";@", true],
+	["[ENG][$-42F]dddd\\,\\ dd\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-437]yyyy\\ \\წ\\ლ\\ი\\ს\\ dd\\ mm\\,\\ dddd;@", true],
+	["[ENG][$-438]d\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-43F]d\\ mmmm\\ yyyy\\ \"ж.\";@", true],
+	["[ENG][$-444]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-449]dd\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-44E]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-44F]dd\\ mmmm\\ yyyy\\ dddd;@", true],
+	["[ENG][$-457]dd\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-813]dddd\\ d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-81A]dddd\\,\\ d\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-82C]d\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-843]yyyy\\ \"й\"\"и\"\"л\"\\ d/mmmm;@", true],
+	["[ENG][$-C07]dddd\\,\\ dd\\.\\ mmmm\\ yyyy;@", true],
+	["[ENG][$-FC19]yyyy\\,\\ dd\\ mmmm;@", true],
+	["[ENG][$-FC22]d\\ mmmm\\ yyyy\" р.\";@", true],
+	["[ENG][$-FC23]d\\ mmmm\\ yyyy;@", true],
+	["[GREEN]#,###", false],
+	["[Green]#,###", false],
+	["[HH]", true],
+	["[HIJ][$-2060401]d/mm/yyyy\\ h:mm\\ AM/PM;@", true],
+	["[HIJ][$-2060401]d\\ mmmm\\ yyyy;@", true],
+	["[H]", true],
+	["[JPN][$-411]gggyy\"年\"m\"月\"d\"日\"\\ dddd;@", true],
+	["[MAGENTA]0.00", false],
+	["[Magenta]0.00", false],
+	["[RED]#.##", false],
+	["[Red]#.##", false],
+	["[Red][<-25]General;[Blue][>25]General;[Green]General;[Yellow]General\\ ", false],
+	["[Red][<=-25]General;[Blue][>=25]General;[Green]General;[Yellow]General", false],
+	["[Red][<>50]General;[Blue]000", false],
+	["[Red][=50]General;[Blue]000", false],
+	["[SS]", true],
+	["[S]", true],
+	["[TWN][DBNum1][$-404]y\"年\"m\"月\"d\"日\";@", true],
+	["[WHITE]0.0", false],
+	["[White]0.0", false],
+	["[YELLOW]@", false],
+	["[Yellow]@", false],
+	["[h]", true],
+	["[h]:mm:ss", true],
+	["[h]:mm:ss;@", true],
+	["[h]\\.mm\" Uhr \";@", true],
+	["[hh]", true],
+	["[s]", true],
+	["[ss]", true],
+	["\\#\\r\\e\\c", false],
+	["\\$#,##0_);[Red]\\\"($\\\"#,##0\\)", false],
+	["\\$0.00", false],
+	["\\C\\O\\B\\ \\o\\n\\ @", false],
+	["\\C\\R\\O\\N\\T\\A\\B\\ \\o\\n\\ @", false],
+	["\\R\\e\\s\\u\\l\\t\\ \\o\\n\\ @", false],
+	["\\S\\Q\\L\\ \\:\\ @", false],
+	["\\S\\Q\\L\\ \\R\\e\\q\\u\\e\\s\\t\\ \\f\\o\\r\\ @", false],
+	["\\c\\c\\c?????0\"aaaa\"0\"bbbb\"000000.00%", false],
+	["\\u\\n\\t\\i\\l\\ h:mm;@", true],
+	["_ * #,##0.00_)[$﷼-429]_ ;_ * \\(#,##0.00\\)[$﷼-429]_ ;_ * \"-\"??_)[$﷼-429]_ ;_ @_ ", false],
+	["_ * #,##0_ ;_ * \\-#,##0_ ;[Red]_ * \"-\"_ ;_ @_ ", false],
+	["_(\"$\"* #,##0.00_);_(\"$\"* \\(#,##0.00\\);_(\"$\"* \"-\"??_);_(@_)", false],
+	["_(\"$\"* #,##0_);_(\"$\"* \\(#,##0\\);_(\"$\"* \"-\"??_);_(@_)", false],
+	["_(\"$\"* #,##0_);_(\"$\"* \\(#,##0\\);_(\"$\"* \"-\"_);_(@_)", false],
+	["_(* #,##0.0000_);_(* \\(#,##0.0000\\);_(* \"-\"??_);_(@_)", false],
+	["_(* #,##0.000_);_(* \\(#,##0.000\\);_(* \"-\"??_);_(@_)", false],
+	["_(* #,##0.00_);_(* \\(#,##0.00\\);_(* \"-\"??_);_(@_)", false],
+	["_(* #,##0.0_);_(* \\(#,##0.0\\);_(* \"-\"??_);_(@_)", false],
+	["_(* #,##0_);_(* \\(#,##0\\);_(* \"-\"??_);_(@_)", false],
+	["_(* #,##0_);_(* \\(#,##0\\);_(* \"-\"_);_(@_)", false],
+	["_([$ANG]\\ * #,##0.0_);_([$ANG]\\ * \\(#,##0.0\\);_([$ANG]\\ * \"-\"?_);_(@_)", false],
+	["_-\"€\"\\ * #,##0.00_-;_-\"€\"\\ * #,##0.00\\-;_-\"€\"\\ * \"-\"??_-;_-@_-", false],
+	["_-* #,##0.00\" TL\"_-;\\-* #,##0.00\" TL\"_-;_-* \\-??\" TL\"_-;_-@_-", false],
+	["_-* #,##0.00\" €\"_-;\\-* #,##0.00\" €\"_-;_-* \\-??\" €\"_-;_-@_-", false],
+	["_-* #,##0.00\\ \"р.\"_-;\\-* #,##0.00\\ \"р.\"_-;_-* \"-\"??\\ \"р.\"_-;_-@_-", false],
+	["_-* #,##0.00\\ \"€\"_-;\\-* #,##0.00\\ \"€\"_-;_-* \"-\"??\\ \"€\"_-;_-@_-", false],
+	["_-* #,##0.00\\ [$€-407]_-;\\-* #,##0.00\\ [$€-407]_-;_-* \\-??\\ [$€-407]_-;_-@_-", false],
+	["_-* #,##0.0\\ _F_-;\\-* #,##0.0\\ _F_-;_-* \"-\"??\\ _F_-;_-@_-", false],
+	["_-* #,##0\\ \"€\"_-;\\-* #,##0\\ \"€\"_-;_-* \"-\"\\ \"€\"_-;_-@_-", false],
+	["_-* #,##0_-;\\-* #,##0_-;_-* \"-\"??_-;_-@_-", false],
+	["_-\\$* #,##0.0_ ;_-\\$* \\-#,##0.0\\ ;_-\\$* \"-\"?_ ;_-@_ ", false],
+	["d", true],
+	["d-mmm", true],
+	["d-mmm-yy", true],
+	["d/m", true],
+	["d/m/yy;@", true],
+	["d/m/yyyy;@", true],
+	["d/mm/yy;@", true],
+	["d/mm/yyyy;@", true],
+	["d\\-mmm", true],
+	["d\\-mmm\\-yyyy", true],
+	["dd", true],
+	["dd\"-\"mmm\"-\"yyyy", true],
+	["dd/m/yyyy", true],
+	["dd/mm/yy", true],
+	["dd/mm/yy;@", true],
+	["dd/mm/yy\\ hh:mm", true],
+	["dd/mm/yyyy", true],
+	["dd/mm/yyyy\\ hh:mm:ss", true],
+	["dd/mmm", true],
+	["dd\\-mm\\-yy", true],
+	["dd\\-mmm\\-yy", true],
+	["dd\\-mmm\\-yyyy\\ hh:mm:ss.000", true],
+	["dd\/mm\/yy", true],
+	["dd\/mm\/yyyy", true],
+	["ddd", true],
+	["dddd", true],
+	["dddd, mmmm dd, yyyy", true],
+	["h", true],
+	["h\"时\"mm\"分\"ss\"秒\";@", true],
+	["h\"時\"mm\"分\"ss\"秒\";@", true],
+	["h:mm", true],
+	["h:mm AM/PM", true],
+	["h:mm:ss", true],
+	["h:mm:ss AM/PM", true],
+	["h:mm:ss;@", true],
+	["h:mm;@", true],
+	["h\\.mm\" Uhr \";@", true],
+	["h\\.mm\" h\";@", true],
+	["h\\.mm\" u.\";@", true],
+	["hh\":\"mm AM/PM", true],
+	["hh:mm:ss", true],
+	["hh:mm:ss\\ AM/PM", true],
+	["hh\\.mm\" h\";@", true],
+	["hhm", true],
+	["hhmm", true],
+	["m\"月\"d\"日\"", true],
+	["m/d/yy", true],
+	["m/d/yy h:mm", true],
+	["m/d/yy;@", true],
+	["m/d/yy\\ h:mm", true],
+	["m/d/yy\\ h:mm;@", true],
+	["m/d/yyyy", true],
+	["m/d/yyyy;@", true],
+	["m/d/yyyy\\ h:mm:ss;@", true],
+	["m/d;@", true],
+	["m\/d\/yyyy", true],
+	["mm/dd", true],
+	["mm/dd/yy", true],
+	["mm/dd/yy;@", true],
+	["mm/dd/yyyy", true],
+	["mm:ss", true],
+	["mm:ss.0;@", true],
+	["mmm d, yyyy", true],
+	["mmm\" \"d\", \"yyyy", true],
+	["mmm-yy", true],
+	["mmm-yy;@", true],
+	["mmm/yy", true],
+	["mmm\\-yy", true],
+	["mmm\\-yy;@", true],
+	["mmm\\-yyyy", true],
+	["mmmm\\ d\\,\\ yyyy", true],
+	["mmmm\\ yyyy", true],
+	["mmss.0", true],
+	["s", true],
+	["ss", true],
+	["yy", true],
+	["yy/mm/dd", true],
+	["yy\\.mm\\.dd", true],
+	["yym", true],
+	["yymm", true],
+	["yymmm", true],
+	["yymmmm", true],
+	["yymmmmm", true],
+	["yyyy", true],
+	["yyyy\"년\"\\ m\"월\"\\ d\"일\";@", true],
+	["yyyy-m-d h:mm AM/PM", true],
+	["yyyy-mm-dd", true],
+	["yyyy/mm/dd", true],
+	["yyyy\\-m\\-d\\ hh:mm:ss", true],
+	["yyyy\\-mm\\-dd", true],
+	["yyyy\\-mm\\-dd;@", true],
+	["yyyy\\-mm\\-dd\\ h:mm", true],
+	["yyyy\\-mm\\-dd\\Thh:mm", true],
+	["yyyy\\-mm\\-dd\\Thhmmss.000", true],
+	["###,##0", false],
+	["#,###.00", false]
+]
diff --git a/test/utilities.js b/test/utilities.js
new file mode 100644
index 0000000..ec03199
--- /dev/null
+++ b/test/utilities.js
@@ -0,0 +1,11 @@
+/* vim: set ts=2: */
+/*jshint loopfunc:true, mocha:true, node:true */
+var SSF = require('../');
+var fs = require('fs'), assert = require('assert');
+var is_date = JSON.parse(fs.readFileSync('./test/is_date.json','utf8'));
+var skip = [];
+describe('utilities', function() {
+  it('correctly determines if formats are dates', function() {
+		is_date.forEach(function(d) { assert.equal(SSF.is_date(d[0]), d[1], d[0]); });
+  });
+});