A right click on a diff line opens the place it names: its file, the hunk's new line, the line itself

In a diff pane (a .diff/.patch file, or a command pane's diff output), the
look's own expansion, which its hover shows, takes a whole line for a
`diff --git`, `---`, `+++` or `@@` line wherever the pointer is on it,
markers included, and for a hunk line when the pointer is on its `+`, `-`
or space. Then the look opens the file (a/ b/ dropped, timestamps cut) at
the line from the hunk header and the lines above it: `@@` the hunk's
first new line, context and added lines their own, a removed line the new
line now where it was. `diff --git` and `+++` open the new file; `---` the
old one, unless the `+++` under it names another. On a hunk line's code
the expansion is its words, the prefix never one of them, and looks as
ever. Other panes are untouched.

Paths resolve in the repository (walking up to `.git` or `.jj` from the
diff's directory, or a command pane's), then that directory. A file not
here opens nothing and says `Look: b/x: no such file here`, or `deleted by
this diff`. A 9P look writing a whole line of the diff does the same.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/docs/fs.md b/docs/fs.md
index 146ff17b..864bfd12 100644
--- a/docs/fs.md
+++ b/docs/fs.md
@@ -208,6 +208,8 @@ A line written to `look` is a right click on it:
   too.
 - a directory types `ls` into a terminal idle there, else opens one there.
 - a URL opens in the browser.
+- in a diff pane, a whole line of the diff opens the place it names, as a
+  right click on its first column does ([tags.md](tags.md#reviewing-diffs)).
 - a plain word selects its next place after dot, wrapping (`LookWord list`
   on the root ctl lists every place in a `+Search` pane instead). In a
   terminal a word is always listed, rows spelled `@p3:12:5-9`.