Fix language keywords completions to be case sensitive

Author: pmoura

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [0.88.1]
+
+* Fix language keywords completions to be case sensitive
+
 ## [0.88.0]
 
 * Add completions for Logtalk and Prolog built-in directives, predicates, and evaluable functors

package.json

@@ -2,7 +2,7 @@
     "name": "logtalk-for-vscode",
     "displayName": "Logtalk for VSCode",
     "description": "Logtalk programming support",
-    "version": "0.88.0",
+    "version": "0.88.1",
     "publisher": "LogtalkDotOrg",
     "icon": "images/logtalk.png",
     "license": "MIT",
@@ -1332,7 +1332,7 @@
         "compile": "tsc -watch -p ./",
         "test": "tsc ./tests/runTest.ts",
         "vsix:make": "vsce package --baseImagesUrl https://raw.githubusercontent.com/llvm/llvm-project/master/clang-tools-extra/clangd/clients/clangd-vscode/",
-        "vsix:install": "code --install-extension logtalk-for-vscode-0.88.0.vsix"
+        "vsix:install": "code --install-extension logtalk-for-vscode-0.88.1.vsix"
     },
     "devDependencies": {
         "@types/bluebird": "^3.5.38",

src/features/completionItemProvider.ts

@@ -1918,13 +1918,17 @@ export class LogtalkKeywordCompletionProvider implements CompletionItemProvider
         }
       }
 
-      // Extract the partial word being typed
-      const wordMatch = textBeforeCursor.match(/([a-z_][a-z0-9_]*)$/i);
-      const partialWord = wordMatch ? wordMatch[1].toLowerCase() : '';
+      // Extract the partial word being typed (case-sensitive: uppercase = variable in Logtalk)
+      const wordMatch = textBeforeCursor.match(/([a-z_][a-z0-9_]*)$/);
+      // If no lowercase word prefix found (e.g. user typed an uppercase variable), skip keyword completions
+      if (!wordMatch) {
+        return [];
+      }
+      const partialWord = wordMatch[1];
 
-      // Filter keywords that match the partial word
+      // Filter keywords that match the partial word (case-sensitive)
       const filteredKeywords = LOGTALK_KEYWORDS.filter(kw =>
-        kw.name.toLowerCase().startsWith(partialWord)
+        kw.name.startsWith(partialWord)
       );
 
       // Create completion items