Thanks for the reminder, but I wonder if it is good to update
the description of this command, and ls-files to use the
same wording for consistency. We seem to use <pathspec> to mean
"this is not necessarily a filename -- we glob", so that may be
a good candidate (we do not have <pathspec> in glossary yet --
we would need to add).
Please don't touch description for diff-* family -- right now,
they say <path>, because they do not glob. If we decide that it
is a good idea to glob (which I suspect we don't for the
low-level stuff, but we probably do for the "git-diff" wrapper),
we would update the code and the description at the same time.
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