fixed #2932

HISTORY.md

@@ -71,6 +71,9 @@
     * Brazilian Portuguese, thank you, Cassiano D'Andrea!
     * Catalan, thanks, Joan!
 
+### 2021-12-12
+* threads: fixed #2932
+
 ### 2021-12-11
 * objects: remove all clones when the green flag is sent to a scene
 * rc6

snap.html

@@ -17,7 +17,7 @@
         <script src="src/symbols.js?version=2021-03-03"></script>
         <script src="src/widgets.js?version=2021-17-09"></script>
         <script src="src/blocks.js?version=2021-12-09"></script>
-        <script src="src/threads.js?version=2021-12-10"></script>
+        <script src="src/threads.js?version=2021-12-12"></script>
         <script src="src/objects.js?version=2021-12-11"></script>
         <script src="src/scenes.js?version=2021-11-24"></script>
         <script src="src/gui.js?version=2021-12-11"></script>

src/threads.js

@@ -64,7 +64,7 @@ SnapExtensions, AlignmentMorph, TextMorph, Cloud, HatBlockMorph*/
 
 /*jshint esversion: 6*/
 
-modules.threads = '2021-December-10';
+modules.threads = '2021-December-12';
 
 var ThreadManager;
 var Process;
@@ -7145,6 +7145,10 @@ Context.prototype.equalTo = function (other) {
     var c1 = this.components(),
         c2 = other.components();
     if (snapEquals(c1.cdr(), c2.cdr())) {
+        if (this.expression && this.expression.length === 1 &&
+                other.expression && other.expression.length === 1) {
+            return snapEquals(this.expression[0], other.expression[0]);
+        }
         return snapEquals(this.expression, other.expression);
     }
     return false;