Inline Diffs

muxd prints a unified diff to the terminal whenever the agent writes to a file, so you can see the exact change without opening an editor.

When Diffs Appear

For new files the output looks like:

Created src/server.go (143 lines)

For edits and overwrites, a standard unified diff is printed:

--- a/internal/store/store.go
+++ b/internal/store/store.go
@@ -42,7 +42,7 @@ func (s *Store) CreateSession(title string) (Session, error) {
-	id := uuid.New().String()
+	id := newUUID()
 	now := time.Now().UTC()
 	_, err := s.db.Exec(
 		`INSERT INTO sessions (id, title, created_at, updated_at) VALUES (?, ?, ?, ?)`,

Toggling Diffs

Diffs are enabled by default. To turn them off:

/config set show_diffs false

To re-enable:

/config set show_diffs true

The setting is stored in ~/.config/muxd/config.json and persists across sessions.

Large Diff Truncation

Diffs longer than 100 lines are truncated. A notice is printed after the cutoff:

... diff truncated (247 lines total) ...

The full change is still applied to the file — truncation only affects what is displayed in the terminal. To see the complete diff after truncation, use git diff or your preferred diff tool.

Edge Cases