Show File in Collapsed Read

Show file paths and search patterns inside the collapsed tool display.

ID show-file-in-collapsed-read · Default on · Compatible * · Source

What it does

The collapsed summary that appears after a Read or Grep tool call includes the actual targets. Instead of the default:

Read 3 files
Searched for 1 pattern

you see:

Read 3 files (src/foo.ts, src/bar.ts, src/baz.ts)
Searched for 1 pattern ("handleSubmit")

When more than three files were read, the display shows the last one and + N more.

Why

The data was already extracted from the tool result — it's just shown during active execution as a hint and then thrown away when the row collapses. That made the history of a session harder to skim than it needed to be. Tracked upstream at anthropics/claude-code#21151 (184 reactions at time of writing).

How it works

The patch identifies the collapsed-display render function by the string keys "read", "search", and "comma-r", which only appear together inside that component. From there it discovers the minified names for readFilePaths, searchArgs, and the getDisplayPath helper by walking the AST from each access.

Once the variable names are known, the patch inserts two conditional push() calls into the children array — one after the "Read" element and one after the "Search" element — that render an extra dim-colored Text node with the file paths or search patterns in parentheses.