On Fri, Mar 14, 2014 at 01:02:13AM +0100, Uwe Storbeck wrote:
> When your system shell (/bin/sh) is a dash control sequences in
> strings get interpreted by the echo command. A commit message
> which ends with the string '\n' may result in a garbage line in
> the todo list of an interactive rebase which causes the rebase
> to fail.
> To reproduce the behavior (with dash as /bin/sh):
> mkdir test && cd test && git init
> echo 1 >foo && git add foo
> git commit -m"this commit message ends with '\n'"
> echo 2 >foo && git commit -a --fixup HEAD
> git rebase -i --autosquash --root
Hmph. We ran into this before and fixed all of the sites (e.g., d1c3b10
and 938791c). This one appears to have been added a few months later
> Maybe there are more places where it would be more robust to use
> printf instead of echo.
FWIW, I just looked through the other uses of "echo" in git-rebase*.sh,
and I think this is the only problematic case.
> - echo "$sha1 $action $prefix $rest"
> + printf "%s %s %s %s\n" "$sha1" "$action" "$prefix"
Looks obviously correct. The echo just below here does not need the same
treatment, as "$rest" is the problematic bit ("$prefix" is always
"fixup" or "squash").
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