fix(signatureHelp): fix regex pattern closes #54

Author: iamcco

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vim-language-server",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "description": "vim language server",
   "keywords": [
     "viml",

src/handles/signatureHelp.ts

@@ -30,7 +30,7 @@ export const signatureHelpProvider =
 
     const preSegment = currentLine.slice(0, position.character);
 
-    const m = preSegment.match(/([\w#&:]+)[ \t]*\(([^()]*|\([^)]*\))*$/);
+    const m = preSegment.match(/([\w#&:]+?)[ \t]*\([ \t]*([^()]*?)$/);
     if (!m) {
       return;
     }