enabled scientific notation in numeric text fields

HISTORY.md

@@ -5,14 +5,16 @@
 * **Notable Changes:**
     * 2D lists inside ITEM OF now have the right order of dimensions (rows, columns, planes, etc.)
     * enhanced MIN and MAX to also operate on text
-    * added "is _ identical to _ ?" to relabel options of equals 
+    * added "is _ identical to _ ?" to relabel options of equals
+    * enabled scientific notation in numeric text fields
 * **Notable Fixes:**
     * don't show internal "compile" reporter in search results
 * **Documentation Updates:**
     * updated manual with hyper-semantics of ITEM OF, thanks Brian!
 
 ### 2021-02-10
-* objects: added "is _ identical to _ ?" to relabel options of equals 
+* objects: added "is _ identical to _ ?" to relabel options of equals
+* morphic: enable scientific notation in numeric text fields
 
 ### 2021-02-09
 * lists: refactored matrix ops to avoid JS stack overflows

snap.html

@@ -5,7 +5,7 @@
         <meta name="viewport" content="width=device-width, initial-scale=1">
         <title>Snap! 6.6.0 - dev - Build Your Own Blocks</title>
         <link rel="icon" href="src/favicon.ico">
-        <script src="src/morphic.js?version=2021-01-30"></script>
+        <script src="src/morphic.js?version=2021-02-10"></script>
         <script src="src/symbols.js?version=2020-10-07"></script>
         <script src="src/widgets.js?version=2021-01-05"></script>
         <script src="src/blocks.js?version=2021-02-09"></script>

src/morphic.js

@@ -1280,7 +1280,7 @@
 
 /*global window, HTMLCanvasElement, FileReader, Audio, FileList, Map*/
 
-var morphicVersion = '2021-January-30';
+var morphicVersion = '2021-February-10';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = true;
 
@@ -5637,13 +5637,15 @@ CursorMorph.prototype.processInput = function (event) {
     // filter invalid chars for numeric fields
     function filterText (content) {
         var points = 0,
+            hasE = false,
             result = '',
             i, ch, valid;
         for (i = 0; i < content.length; i += 1) {
             ch = content.charAt(i);
             valid = (
                 ('0' <= ch && ch <= '9') || // digits
-                (i === 0 && ch === '-')  || // leading '-'
+                (ch.toLowerCase() === 'e') || // scientific notation
+                ((i === 0 || hasE) && ch === '-')  || // leading '-' or sc. not.
                 (ch === '.' && points === 0) // at most '.'
             );
             if (valid) {
@@ -5651,6 +5653,9 @@ CursorMorph.prototype.processInput = function (event) {
                 if (ch === '.') {
                     points += 1;
                 }
+                if (ch.toLowerCase() === 'e') {
+                    hasE = true;
+                }
             }
         }
         return result;