diff --git a/package.json b/package.json
index 316b65f..e444f0f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ssf",
-  "version": "0.5.5",
+  "version": "0.5.6",
   "author": "SheetJS",
   "description": "pure-JS library to format data using ECMA-376 spreadsheet Format Codes",
   "keywords": [ "format", "sprintf", "spreadsheet" ],
diff --git a/ssf.js b/ssf.js
index da25f77..f776ee7 100644
--- a/ssf.js
+++ b/ssf.js
@@ -5,7 +5,7 @@ var _strrev = function(x) { return String(x).split("").reverse().join("");};
 function fill(c,l) { return new Array(l+1).join(c); }
 function pad(v,d,c){var t=String(v);return t.length>=d?t:(fill(c||0,d-t.length)+t);}
 function rpad(v,d,c){var t=String(v);return t.length>=d?t:(t+fill(c||0,d-t.length));}
-SSF.version = '0.5.5';
+SSF.version = '0.5.6';
 /* Options */
 var opts_fmt = {};
 function fixopts(o){for(var y in opts_fmt) if(o[y]===undefined) o[y]=opts_fmt[y];}
@@ -212,13 +212,19 @@ var write_num = function(type, fmt, val) {
   if(fmt.indexOf("E") > -1) {
     var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
     if(fmt == '##0.0E+0') {
-      var period = fmt.length - 5;
+      var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
       var ee = (Number(val.toExponential(0).substr(2+(val<0))))%period;
+      if(ee < 0) ee += period;
       o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
       if(!o.match(/[Ee]/)) {
         var fakee = (Number(val.toExponential(0).substr(2+(val<0))));
         if(o.indexOf(".") === -1) o = o[0] + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
-        else throw "missing E |" + o;
+        else o += "E+" + (fakee - ee);
+        while(o.substr(0,2) === "0.") {
+          o = o[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(/^([+-]?)([0-9]*)\.([0-9]*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
     } else o = val.toExponential(idx);
@@ -233,6 +239,7 @@ var write_num = function(type, fmt, val) {
     var myn = (rnd - base*den), myd = den;
     return sign + (base?base:"") + " " + (myn === 0 ? fill(" ", r[1].length + 1 + r[4].length) : pad(myn,r[1].length," ") + r[2] + "/" + r[3] + pad(myd,r[4].length));
   }
+  if(fmt.match(/^#+0+$/)) fmt = fmt.replace(/#/g,"");
   if(fmt.match(/^00+$/)) return (val<0?"-":"")+pad(Math.round(aval),fmt.length);
   if(fmt.match(/^[#?]+$/)) return String(Math.round(val)).replace(/^0$/,"");
   if((r = fmt.match(/^#*0+\.(0+)/))) {
@@ -343,7 +350,7 @@ function eval_fmt(fmt, v, opts, flen) {
         out.push({t:'D', v:o}); break;
       case ' ': out.push({t:c,v:c}); ++i; break;
       default:
-        if(",$-+/():!^&'~{}<>=".indexOf(c) === -1)
+        if(",$-+/():!^&'~{}<>=€".indexOf(c) === -1)
           throw 'unrecognized character ' + fmt[i] + ' in ' + fmt;
         out.push({t:'t', v:c}); ++i; break;
     }
@@ -367,7 +374,7 @@ function eval_fmt(fmt, v, opts, flen) {
         out[i].t = 't'; break;
       case 'n': case '(': case '?':
         var jj = i+1;
-        while(out[jj] && ("?D".indexOf(out[jj].t) > -1 || (" t".indexOf(out[jj].t) > -1 && "?t".indexOf((out[jj+1]||{}).t)>-1 && (out[jj+1].t == '?' || out[jj+1].v == '/')) || out[i].t == '(' && (out[jj].t == ')' || out[jj].t == 'n') || out[jj].t == 't' && (out[jj].v == '/' || out[jj].v == '$' || (out[jj].v == ' ' && (out[jj+1]||{}).t == '?')))) {
+        while(out[jj] && ("?D".indexOf(out[jj].t) > -1 || (" t".indexOf(out[jj].t) > -1 && "?t".indexOf((out[jj+1]||{}).t)>-1 && (out[jj+1].t == '?' || out[jj+1].v == '/')) || out[i].t == '(' && (out[jj].t == ')' || out[jj].t == 'n') || out[jj].t == 't' && (out[jj].v == '/' || '$€'.indexOf(out[jj].v) > -1 || (out[jj].v == ' ' && (out[jj+1]||{}).t == '?')))) {
           out[i].v += out[jj].v;
           delete out[jj]; ++jj;
         }
diff --git a/ssf.md b/ssf.md
index 6b00563..7049176 100644
--- a/ssf.md
+++ b/ssf.md
@@ -377,8 +377,9 @@ For the special case of engineering notation, "shift" the decimal:
 
 ```
     if(fmt == '##0.0E+0') {
-      var period = fmt.length - 5;
+      var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
       var ee = (Number(val.toExponential(0).substr(2+(val<0))))%period;
+      if(ee < 0) ee += period;
       o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
       if(!o.match(/[Ee]/)) {
 ```
@@ -388,7 +389,12 @@ TODO: something reasonable
 ```
         var fakee = (Number(val.toExponential(0).substr(2+(val<0))));
         if(o.indexOf(".") === -1) o = o[0] + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
-        else throw "missing E |" + o;
+        else o += "E+" + (fakee - ee);
+        while(o.substr(0,2) === "0.") {
+          o = o[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(/^([+-]?)([0-9]*)\.([0-9]*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
     } else o = val.toExponential(idx);
@@ -418,6 +424,7 @@ Fractions with known denominator are resolved by rounding:
 A few special general cases can be handled in a very dumb manner:
 
 ```
+  if(fmt.match(/^#+0+$/)) fmt = fmt.replace(/#/g,"");
   if(fmt.match(/^00+$/)) return (val<0?"-":"")+pad(Math.round(aval),fmt.length);
   if(fmt.match(/^[#?]+$/)) return String(Math.round(val)).replace(/^0$/,"");
   if((r = fmt.match(/^#*0+\.(0+)/))) {
@@ -638,7 +645,7 @@ The default magic characters are listed in subsubsections 18.8.30-31 of ECMA376:
 ```
       case ' ': out.push({t:c,v:c}); ++i; break;
       default:
-        if(",$-+/():!^&'~{}<>=".indexOf(c) === -1)
+        if(",$-+/():!^&'~{}<>=€".indexOf(c) === -1)
           throw 'unrecognized character ' + fmt[i] + ' in ' + fmt;
         out.push({t:'t', v:c}); ++i; break;
     }
@@ -662,7 +669,7 @@ The default magic characters are listed in subsubsections 18.8.30-31 of ECMA376:
         out[i].t = 't'; break;
       case 'n': case '(': case '?':
         var jj = i+1;
-        while(out[jj] && ("?D".indexOf(out[jj].t) > -1 || (" t".indexOf(out[jj].t) > -1 && "?t".indexOf((out[jj+1]||{}).t)>-1 && (out[jj+1].t == '?' || out[jj+1].v == '/')) || out[i].t == '(' && (out[jj].t == ')' || out[jj].t == 'n') || out[jj].t == 't' && (out[jj].v == '/' || out[jj].v == '$' || (out[jj].v == ' ' && (out[jj+1]||{}).t == '?')))) {
+        while(out[jj] && ("?D".indexOf(out[jj].t) > -1 || (" t".indexOf(out[jj].t) > -1 && "?t".indexOf((out[jj+1]||{}).t)>-1 && (out[jj+1].t == '?' || out[jj+1].v == '/')) || out[i].t == '(' && (out[jj].t == ')' || out[jj].t == 'n') || out[jj].t == 't' && (out[jj].v == '/' || '$€'.indexOf(out[jj].v) > -1 || (out[jj].v == ' ' && (out[jj+1]||{}).t == '?')))) {
           out[i].v += out[jj].v;
           delete out[jj]; ++jj;
         }
@@ -960,7 +967,7 @@ coveralls:
 ```json>package.json
 {
   "name": "ssf",
-  "version": "0.5.5",
+  "version": "0.5.6",
   "author": "SheetJS",
   "description": "pure-JS library to format data using ECMA-376 spreadsheet Format Codes",
   "keywords": [ "format", "sprintf", "spreadsheet" ],
diff --git a/test/exp.tsv b/test/exp.tsv
index f7c420c..8d7c132 100644
--- a/test/exp.tsv
+++ b/test/exp.tsv
@@ -12,9 +12,9 @@ value	#0.0E+0	##0.0E+0	###0.0E+0	####0.0E+0
 0.001234568	12.3E-4	1.2E-3	12.3E-4	123.5E-5
 0.012345679	1.2E-2	12.3E-3	123.5E-4	1234.6E-5
 0.123456789	12.3E-2	123.5E-3	1234.6E-4	12345.7E-5
-1.23456789	1.2E+0	|1.2E+0	1.2E+0	1.2E+0
-12.3456789	12.3E+0	|12.3E+0	12.3E+0	12.3E+0
-123.456789	1.2E+2	|123.5E+0	123.5E+0	123.5E+0
+1.23456789	1.2E+0	1.2E+0	1.2E+0	1.2E+0
+12.3456789	12.3E+0	12.3E+0	12.3E+0	12.3E+0
+123.456789	1.2E+2	123.5E+0	123.5E+0	123.5E+0
 1234.56789	12.3E+2	1.2E+3	1234.6E+0	1234.6E+0
 12345.6789	1.2E+4	12.3E+3	1.2E+4	12345.7E+0
 123456.789	12.3E+4	123.5E+3	12.3E+4	1.2E+5
@@ -40,7 +40,7 @@ value	#0.0E+0	##0.0E+0	###0.0E+0	####0.0E+0
 12345678900000000000000000	12.3E+24	12.3E+24	12.3E+24	1.2E+25
 123456789000000000000000000	1.2E+26	123.5E+24	123.5E+24	12.3E+25
 1234567890000000000000000000	12.3E+26	1.2E+27	1234.6E+24	123.5E+25
-12345678900000000000000000000	1.2E+28	12.3E+27	1.2E+28	|1234.6E+25
-123456789000000000000000000000	|12.3E+28	123.5E+27	|12.3E+28	|12345.7E+25
-1234567890000000000000000000000	1.2E+30	1.2E+30	|123.5E+28	1.2E+30
-12345678900000000000000000000000	|12.3E+30	12.3E+30	|1234.6E+28	|12.3E+30
+12345678900000000000000000000	1.2E+28	12.3E+27	1.2E+28	1234.6E+25
+123456789000000000000000000000	12.3E+28	123.5E+27	12.3E+28	12345.7E+25
+1234567890000000000000000000000	1.2E+30	1.2E+30	123.5E+28	1.2E+30
+12345678900000000000000000000000	12.3E+30	12.3E+30	1234.6E+28	12.3E+30
diff --git a/test/implied.json b/test/implied.json
index ce5b3c6..d23ea16 100644
--- a/test/implied.json
+++ b/test/implied.json
@@ -1,6 +1,6 @@
 [
   [1234567890000, [
-    [0, "1.23457E+12", true],
+    [0, "1.23457E+12"],
     [1, "1234567890000"],
     [2, "1234567890000.00"],
     [3, "1,234,567,890,000"],
@@ -27,7 +27,7 @@
     [46, ""],
     [47, ""],
     [48, "1.2E+12"],
-    [49, "1.23457E+12", true]
+    [49, "1.23457E+12"]
   ]],
 
   [123456789000, [
@@ -57,8 +57,8 @@
     [45, ""],
     [46, ""],
     [47, ""],
-    [48, "123.5E+9", true],
-    [49, "1.23457E+11", true]
+    [48, "123.5E+9"],
+    [49, "1.23457E+11"]
   ]],
 
   [12345678900, [
@@ -336,7 +336,7 @@
     [45, "57:47"],
     [46, "2962:57:47"],
     [47, "5746.6"],
-    [48, "123.5E+0", true],
+    [48, "123.5E+0"],
     [49, "123.456789"]
   ]],
 
@@ -367,7 +367,7 @@
     [45, "17:47"],
     [46, "296:17:47"],
     [47, "1746.7"],
-    [48, "12.3E+0", true],
+    [48, "12.3E+0"],
     [49, "12.3456789"]
   ]],
 
@@ -398,7 +398,7 @@
     [45, "37:47"],
     [46, "29:37:47"],
     [47, "3746.7"],
-    [48, "1.2E+0", true],
+    [48, "1.2E+0"],
     [49, "1.23456789"]
   ]],
 
@@ -429,8 +429,8 @@
     [45, "57:47"],
     [46, "2:57:47"],
     [47, "5746.7"],
-    [48, "123.5E-3", true],
-    [49, "0.123456789", true]
+    [48, "123.5E-3"],
+    [49, "0.123456789"]
   ]],
 
   [0.0123456789, [
@@ -460,8 +460,8 @@
     [45, "17:47"],
     [46, "0:17:47"],
     [47, "1746.7"],
-    [48, "12.3E-3", true],
-    [49, "0.012345679", true]
+    [48, "12.3E-3"],
+    [49, "0.012345679"]
   ]],
 
   [0.00123456789, [
@@ -491,8 +491,8 @@
     [45, "01:47"],
     [46, "0:01:47"],
     [47, "0146.7"],
-    [48, "1.2E-3", true],
-    [49, "0.001234568", true]
+    [48, "1.2E-3"],
+    [49, "0.001234568"]
   ]],
 
   [0.000123456789, [
@@ -522,8 +522,8 @@
     [45, "00:11"],
     [46, "0:00:11"],
     [47, "0010.7"],
-    [48, "123.5E-6", true],
-    [49, "0.000123457", true]
+    [48, "123.5E-6"],
+    [49, "0.000123457"]
   ]],
 
   [0.0000123456789, [
@@ -553,8 +553,8 @@
     [45, "00:01"],
     [46, "0:00:01"],
     [47, "0001.1"],
-    [48, "12.3E-6", true],
-    [49, "1.23457E-05", true]
+    [48, "12.3E-6"],
+    [49, "1.23457E-05"]
   ]],
 
   [0.00000123456789, [
@@ -584,8 +584,8 @@
     [45, "00:00"],
     [46, "0:00:00"],
     [47, "0000.1"],
-    [48, "1.2E-6", true],
-    [49, "1.23457E-06", true]
+    [48, "1.2E-6"],
+    [49, "1.23457E-06"]
   ]],
 
   [0.000000123456789, [
@@ -615,8 +615,8 @@
     [45, "00:00"],
     [46, "0:00:00"],
     [47, "0000.0"],
-    [48, "123.5E-9", true],
-    [49, "1.23457E-07", true]
+    [48, "123.5E-9"],
+    [49, "1.23457E-07"]
   ]],
 
   [0.0000000123456789, [
@@ -646,8 +646,8 @@
     [45, "00:00"],
     [46, "0:00:00"],
     [47, "0000.0"],
-    [48, "12.3E-9", true],
-    [49, "1.23457E-08", true]
+    [48, "12.3E-9"],
+    [49, "1.23457E-08"]
   ]],
 
   [0.00000000123456789, [
@@ -677,8 +677,8 @@
     [45, "00:00"],
     [46, "0:00:00"],
     [47, "0000.0"],
-    [48, "1.2E-9", true],
-    [49, "1.23457E-09", true]
+    [48, "1.2E-9"],
+    [49, "1.23457E-09"]
   ]],
 
   [0.000000000123456789, [
@@ -708,8 +708,8 @@
     [45, "00:00"],
     [46, "0:00:00"],
     [47, "0000.0"],
-    [48, "123.5E-12", true],
-    [49, "1.23457E-10", true]
+    [48, "123.5E-12"],
+    [49, "1.23457E-10"]
   ]],