Update CodeMirror dep to v5.42.2

Affects Code and Markdown section types

gui/public/codemirror/mode/python/index.html

@@ -8,9 +8,9 @@
 <script src="../../lib/codemirror.js"></script>
 <script src="../../addon/edit/matchbrackets.js"></script>
 <script src="python.js"></script>
-<style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
+<style>.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
 <div id=nav>
-  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
 
   <ul>
     <li><a href="../../index.html">Home</a>

gui/public/codemirror/mode/python/python.js

@@ -1,5 +1,5 @@
 // CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
+// Distributed under an MIT license: https://codemirror.net/LICENSE
 
 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS
@@ -144,7 +144,7 @@
       if (stream.match(stringPrefixes)) {
         var isFmtString = stream.current().toLowerCase().indexOf('f') !== -1;
         if (!isFmtString) {
-          state.tokenize = tokenStringFactory(stream.current());
+          state.tokenize = tokenStringFactory(stream.current(), state.tokenize);
           return state.tokenize(stream, state);
         } else {
           state.tokenize = formatStringFactory(stream.current(), state.tokenize);
@@ -187,23 +187,18 @@
       var singleline = delimiter.length == 1;
       var OUTCLASS = "string";
 
-      function tokenFString(stream, state) {
-        // inside f-str Expression
-        if (stream.match(delimiter)) {
-          // expression ends pre-maturally, but very common in editing
-          // Could show error to remind users to close brace here
-          state.tokenize = tokenString
-          return OUTCLASS;
-        } else if (stream.match('{')) {
-          // starting brace, if not eaten below
-          return "punctuation";
-        } else if (stream.match('}')) {
-          // return to regular inside string state
-          state.tokenize = tokenString
-          return "punctuation";
-        } else {
-          // use tokenBaseInner to parse the expression
-          return tokenBaseInner(stream, state);
+      function tokenNestedExpr(depth) {
+        return function(stream, state) {
+          var inner = tokenBaseInner(stream, state)
+          if (inner == "punctuation") {
+            if (stream.current() == "{") {
+              state.tokenize = tokenNestedExpr(depth + 1)
+            } else if (stream.current() == "}") {
+              if (depth > 1) state.tokenize = tokenNestedExpr(depth - 1)
+              else state.tokenize = tokenString
+            }
+          }
+          return inner
         }
       }
 
@@ -222,14 +217,9 @@
             return OUTCLASS;
           } else if (stream.match('{', false)) {
             // switch to nested mode
-            state.tokenize = tokenFString
-            if (stream.current()) {
-              return OUTCLASS;
-            } else {
-              // need to return something, so eat the starting {
-              stream.next();
-              return "punctuation";
-            }
+            state.tokenize = tokenNestedExpr(0)
+            if (stream.current()) return OUTCLASS;
+            else return state.tokenize(stream, state)
           } else if (stream.match('}}')) {
             return OUTCLASS;
           } else if (stream.match('}')) {
@@ -251,7 +241,7 @@
       return tokenString;
     }
 
-    function tokenStringFactory(delimiter) {
+    function tokenStringFactory(delimiter, tokenOuter) {
       while ("rubf".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
         delimiter = delimiter.substr(1);
 
@@ -266,7 +256,7 @@
             if (singleline && stream.eol())
               return OUTCLASS;
           } else if (stream.match(delimiter)) {
-            state.tokenize = tokenBase;
+            state.tokenize = tokenOuter;
             return OUTCLASS;
           } else {
             stream.eat(/['"]/);
@@ -276,7 +266,7 @@
           if (parserConf.singleLineStringErrors)
             return ERRORCLASS;
           else
-            state.tokenize = tokenBase;
+            state.tokenize = tokenOuter;
         }
         return OUTCLASS;
       }

gui/public/codemirror/mode/python/test.js

@@ -1,5 +1,5 @@
 // CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
+// Distributed under an MIT license: https://codemirror.net/LICENSE
 
 (function() {
   var mode = CodeMirror.getMode({indentUnit: 4},
@@ -35,4 +35,10 @@
   MT("fInvalidFString", "[error f'this is wrong}]");
   MT("fNestedFString", "[string f'expression ]{[number 100] [operator +] [string f'inner]{[number 5]}[string ']}[string string']");
   MT("uValidStringPrefix", "[string u'this is an unicode string']");
+
+  MT("nestedString", "[string f']{[variable b][[ [string \"c\"] ]]}[string f'] [comment # oops]")
+
+  MT("bracesInFString", "[string f']{[variable x] [operator +] {}}[string !']")
+
+  MT("nestedFString", "[string f']{[variable b][[ [string f\"c\"] ]]}[string f'] [comment # oops]")
 })();