Enable autocomplete in an empty wiki link

src/NoteWorkspace.ts

@@ -68,7 +68,7 @@ export class NoteWorkspace {
   // This will allow us to potentially expose these as settings.
   static _rxTagNoAnchors = '\\#[\\w\\-\\_]+'; // used to match tags that appear within lines
   static _rxTagWithAnchors = '^\\#[\\w\\-\\_]+$'; // used to match entire words
-  static _rxWikiLink = '\\[\\[[^sep\\]]+(sep[^sep\\]]+)?\\]\\]'; // [[wiki-link-regex(|with potential pipe)?]] Note: "sep" will be replaced with pipedWikiLinksSeparator on compile
+  static _rxWikiLink = '\\[\\[[^sep\\]]*(sep[^sep\\]]*)?\\]\\]'; // [[wiki-link-regex(|with potential pipe)?]] Note: "sep" will be replaced with pipedWikiLinksSeparator on compile
   static _rxTitle = '(?<=^( {0,3}#[^\\S\\r\\n]+)).+';
   static _rxMarkdownWordPattern = '([\\_\\w\\#\\.\\/\\\\]+)'; // had to add [".", "/", "\"] to get relative path completion working and ["#"] to get tag completion working
   static _rxFileExtensions = '\\.(md|markdown|mdx|fountain)$';

src/Ref.ts

@@ -1,4 +1,4 @@
-/* 
+/*
 A `Ref` is a match for:
 
 - a [[wiki-link]]
@@ -80,17 +80,16 @@ export function getRefAt(document: vscode.TextDocument, position: vscode.Positio
     // keep the end
     let r = new vscode.Range(s, e);
     ref = document.getText(r);
-    if (ref) {
-      // Check for piped wiki-links
-      ref = NoteWorkspace.cleanPipedWikiLink(ref);
 
-      return {
-        type: RefType.WikiLink,
-        word: ref, // .replace(/^\[+/, ''),
-        hasExtension: refHasExtension(ref),
-        range: r, // range,
-      };
-    }
+    // Check for piped wiki-links
+    ref = NoteWorkspace.cleanPipedWikiLink(ref);
+
+    return {
+      type: RefType.WikiLink,
+      word: ref, // .replace(/^\[+/, ''),
+      hasExtension: refHasExtension(ref),
+      range: r, // range,
+    };
   }
 
   return NULL_REF;