Fix `edit-files-faster` feature (#2279)

* Fix `edit-files-faster` feature

* Lint

1 files changed, 8 insertions, 1 deletions

diff --git a/source/features/edit-files-faster.tsx b/source/features/edit-files-faster.tsx
index e8487dcd..4c24792d 100644
--- a/source/features/edit-files-faster.tsx
+++ b/source/features/edit-files-faster.tsx
@@ -4,8 +4,10 @@ import select from 'select-dom';
 import features from '../libs/features';
 import * as icons from '../libs/icons';
 import {wrap} from '../libs/dom-utils';
+import getDefaultBranch from '../libs/get-default-branch';
 
-function init(): void {
+async function init(): Promise<void> {
+	const defaultBranch = await getDefaultBranch();
 	for (const fileIcon of select.all('.files :not(a) > .octicon-file')) {
 		const pathnameParts = fileIcon
 			.closest('tr')!
@@ -15,6 +17,11 @@ function init(): void {
 
 		pathnameParts[3] = 'edit'; // Replaces `/blob/`
 
+		const isPermalink = /Tag|Tree/.test(select('.branch-select-menu i')!.textContent!);
+		if (isPermalink) {
+			pathnameParts[4] = defaultBranch; // Replaces /${tag|commit}/
+		}
+
 		wrap(fileIcon, <a href={pathnameParts.join('/')} className="rgh-edit-files-faster" />);
 		fileIcon.after(icons.edit());
 	}