editor: Bullet list, using tabs (mixing tabs and space doesn't work)

app/static/scripts/editor.js

@@ -140,6 +140,20 @@ function editor_quote(event)
     });
 }
 
+function editor_bullet_list(event)
+{
+    editor_act_on_lines(event, function(line) {
+		let ident_match = line.match(/^[\t]+/m) ?? [''];
+		let ident = ident_match[0];
+		let count = ident.length;
+
+		const contents = line.slice(count);
+        if(count < line.length && line[count] != '-') return '- ' + contents;
+
+		return ident + "\t" + contents;
+    });
+}
+
 previewTimeout = null;
 ta = document.querySelector(".editor textarea");
 ta.addEventListener('keydown', function(e) {

app/templates/widgets/editor.html

@@ -66,8 +66,9 @@
 			</button>
 
 			<span class="separator"></span>
+
 			<!-- Lists -->
-			<button type="button" onclick="editor_btn_type()">
+			<button type="button" onclick="editor_bullet_list(event)">
 				<svg viewBox="0 0 24 24">
 					<path d="M4 10.5c-.83 0-1.5.67-1.5 1.5s.67 1.5 1.5 1.5 1.5-.67 1.5-1.5-.67-1.5-1.5-1.5zm0-6c-.83 0-1.5.67-1.5 1.5S3.17 7.5 4 7.5 5.5 6.83 5.5 6 4.83 4.5 4 4.5zm0 12c-.83 0-1.5.68-1.5 1.5s.68 1.5 1.5 1.5 1.5-.68 1.5-1.5-.67-1.5-1.5-1.5zM7 19h14v-2H7v2zm0-6h14v-2H7v2zm0-8v2h14V5H7z"/>
 				</svg>