use metadatacache to get tags, match tag: in frontmatter also

README.md

@@ -1,5 +1,5 @@
 ## Obsidian Frontmatter Tag Suggest
 
-Autocompletes tags in the YAML frontmatter. It will show an autocompletion menu if you are on a line starting with `tags:`
+Autocompletes tags in the YAML frontmatter. It will show an autocompletion menu if you are on a line starting with `tags:` or `tag:`.
 
 That's it. That's the plugin

main.ts

@@ -4,7 +4,6 @@ import {
 	EditorSuggest,
 	EditorSuggestContext,
 	EditorSuggestTriggerInfo,
-	getAllTags,
 	Plugin,
 	TFile,
 } from "obsidian";
@@ -25,25 +24,19 @@ class TagSuggest extends EditorSuggest<string> {
 	}
 
 	getTags(): string[] {
-		const app = this.plugin.app;
-		let tags: string[] = [];
-		const files = app.vault.getMarkdownFiles();
-		files.forEach((p) => {
-			const cache = app.metadataCache.getFileCache(p);
-			tags.push(...getAllTags(cache));
-		});
-		return [...new Set(tags)].sort().map((p) => p.split("#").pop());
+		//@ts-expect-error, private method
+		const tags: any = this.plugin.app.metadataCache.getTags();
+		return [...Object.keys(tags)].map((p) => p.split("#").pop());
 	}
 
 	onTrigger(
 		cursor: EditorPosition,
 		editor: Editor,
 		_: TFile
 	): EditorSuggestTriggerInfo | null {
-		const onFrontmatterTagLine = editor
-			.getLine(cursor.line)
-			.toLowerCase()
-			.startsWith("tags:");
+		const lineContents = editor.getLine(cursor.line).toLowerCase();
+		const onFrontmatterTagLine =
+			lineContents.startsWith("tags:") || lineContents.startsWith("tag:");
 		if (onFrontmatterTagLine) {
 			const sub = editor.getLine(cursor.line).substring(0, cursor.ch);
 			const match = sub.match(/(?<= )\S+$/)?.first();

manifest.json

@@ -1,7 +1,7 @@
 {
 	"id": "obsidian-frontmatter-tag-suggest",
 	"name": "Frontmatter Tag Suggest",
-	"version": "0.1.0",
+	"version": "0.1.1",
 	"minAppVersion": "0.12.0",
 	"description": "Offer autocomplete suggestions for tags in frontmatter",
 	"author": "Jonathan Miller",

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "obsidian-frontmatter-tag-suggest",
-	"version": "0.1.0",
+	"version": "0.1.1",
 	"description": "Offer autocomplete suggestions for tags in frontmatter",
 	"main": "main.js",
 	"scripts": {