Italicize editable input options (e.g. for the SPLT block)

blocks.js

@@ -6097,7 +6097,9 @@ InputSlotMorph.prototype.setContents = function (aStringOrFloat) {
         isConstant = dta instanceof Array;
     if (isConstant) {
         dta = localize(dta[0]);
+        cnts.isItalic = !this.isReadOnly;
     } else { // assume dta is a localizable choice if it's a key in my choices
+        cnts.isItalic = false;
         if (this.choices !== null && this.choices[dta] instanceof Array) {
             return this.setContents(this.choices[dta]);
         }
@@ -6535,7 +6537,13 @@ InputSlotMorph.prototype.mouseClickLeft = function (pos) {
 };
 
 InputSlotMorph.prototype.reactToKeystroke = function () {
+    var cnts;
+    if (this.constant) {
+        cnts = this.contents();
         this.constant = null;
+        cnts.isItalic = false;
+        cnts.drawNew();
+    }
 };
 
 InputSlotMorph.prototype.reactToEdit = function () {

history.txt

@@ -1837,3 +1837,4 @@ ______
 130801
 ------
 * Blocks, Threads: "whitespace" & other options in SPLIT reporter's dropdown
+* Blocks: Italicize editable input options (e.g. for the SPLT block)