feat: show line change counts in diff tabs

2026-10-16 12:02:42 +02:00
parent c689d9e782
commit a664b807b3
5 changed files with 122 additions and 49 deletions
@@ -427,6 +427,8 @@ Comparisons start in **split, vertical (left/right)** view by default. In Normal

 Diff metadata lives in the text-pane borders instead of a separate info row: split panes show their own Before/After revision labels at the bottom-left; a single visible pane shows the combined `before → after` label there. Each pane shows its read-only/editable state at the top-right, independently of keyboard focus. Before is always read-only; After is editable only for an eligible Working-checkout or checkout-matched pinned file. The changed-file explorer and panes start directly below configured chrome, and there is no native-buffer help footer. Loading/error/file notices remain visible when applicable. Narrow borders prioritize state and clip titles without painting over the gutter or source text.

+Default diff tab titles show `Diff · +N -M · filename`, with added and removed line counts for the selected file, not the whole comparison. Replaced lines count on both sides; unchanged context does not count. Counts update with live edits and undo/redo, including when the diff tab is inactive. Revision selectors and files still loading omit counts until their text diff is ready. Custom chrome templates include this prefix through `{view}`.
+
 For jj-managed repositories, revision entries and border labels display only the change ID; Git repositories keep commit-ID labels, and named bookmarks retain their names. The backing commit ID remains the exact comparison target and can still be used to filter revisions.

 Text panes use normal buffer interaction regardless of writability: motions and counts, search, Visual/Visual Line selections, multiple carets, yank, remapped bindings, and non-mutating actions work in Before and After. Read-only snapshots reject insert/delete/change/paste, repeat edits, undo/redo, mutating plugin effects, and saves, including saves to another path. Their text retains the revision's final newline. Snapshots use separate virtual LSP document identities and do not appear in ordinary buffer lists or dirty-buffer comparisons. Closing the diff disposes unreferenced snapshots and restores the live or original buffer in its workspace pane; snapshots displayed by other panes or tabs remain read-only until closed. Explicit buffer commands and Markdown/plugin navigation retain their ordinary behavior; native LSP definitions use the routing below.