Jeff King <peff@xxxxxxxx> writes:
> git commit -m 'buggy commit'
> echo fix >>file.c
> git commit --amend ;# oops, should have been "-a"
> git push
>
> But perhaps that gets to the heart of the matter. Could we perhaps be
> providing a more detailed summary of what happened for an --amend? I.e.,
> to summarize _both_ sets of changes (and if one set is empty, say so)?
> ...
> judgement about whether it's an error, since it may well be that you
> were simply rewording the commit message).
Perhaps "git range-diff HEAD@{1}...HEAD" being an empty is a sign
that either the user intentionally or accidentally did not do
anything other than "touch"ing the commit.
"git commit --amend --[no-]range-diff" that shows what you changed
with the amending may be an interesting possibility; I am not yet
ready to seriously encourage anybody to explore it, though, because
"git diff HEAD@{1}" is much easier to see what code got changed, but
one (and probably only) downside is that it does not cover the
change in the log message.
