Ticket #44820: 44820.2.diff

src/js/_enqueues/wp/code-editor.js

@@ -297 +297 @@
 
                 if ( codemirror.showHint ) {
                         codemirror.on( 'keyup', function( editor, event ) { // eslint-disable-line complexity
-                                var shouldAutocomplete, isAlphaKey = /^[a-zA-Z]$/.test( event.key ), lineBeforeCursor, innerMode, token;
+                                var shouldAutocomplete, isAlphaKey = /^[a-zA-Z]$/.test( event.key ), backspaceKeyCode = 8, lineBeforeCursor, innerMode, token;
                                 if ( codemirror.state.completionActive && isAlphaKey ) {
                                         return;
                                 }
@@ -319 +319 @@
                                                 '=' === token.string && token.state.htmlState && token.state.htmlState.tagName;
                                 } else if ( 'css' === innerMode ) {
                                         shouldAutocomplete =
-                                                isAlphaKey ||
+                                                isAlphaKey && token.string.toLowerCase().endsWith( event.key.toLowerCase() ) ||
+                                                event.keyCode === backspaceKeyCode && /[a-zA-Z-]$/.test( token.string ) ||
                                                 ':' === event.key ||
                                                 ' ' === event.key && /:\s+$/.test( lineBeforeCursor );
                                 } else if ( 'javascript' === innerMode ) {