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git-rebase--interactive.sh: use printf instead of echo to print commit message

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On systems with an echo which defaults to the XSI-conformant behavior
(Solaris, or others using Ksh), echo will interpret certain backslashed
characters as control sequences.  This can cause a problem for interactive
rebase when it is used to rebase commits whose commit "subject" (the first
line) contains any of these backslashed sequences.  In this case, echo will
substitute the control sequence for the backslashed characters and either
the rebased commit message will differ from the original, or the rebase
process will fail.  Neither is desirable.

So work around this issue by replacing the echo statements used to print
out portions of the commit message, with printf.

Also, add a test to test for this breakage.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Acked-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Casey 2010-07-22 14:15:11 -05:00 committed by Junio C Hamano
parent ec136663c7
commit 938791cd01
2 changed files with 13 additions and 7 deletions
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12
git-rebase--interactive.sh
View file

@ -119,7 +119,7 @@ run 'git rebase --continue'"
export GIT_CHERRY_PICK_HELP
warn () {
echo "$*" >&2
printf '%s\n' "$*" >&2
}
output () {
@ -606,7 +606,7 @@ skip_unnecessary_picks () {
fd=1
;;
esac
echo "$command${sha1:+ }$sha1${rest:+ }$rest" >&$fd
printf '%s\n' "$command${sha1:+ }$sha1${rest:+ }$rest" >&$fd
done <"$TODO" >"$TODO.new" 3>>"$DONE" &&
mv -f "$TODO".new "$TODO" &&
case "$(peek_next_command)" in
@ -649,12 +649,12 @@ rearrange_squash () {
case " $used" in
*" $sha1 "*) continue ;;
esac
echo "$pick $sha1 $message"
printf '%s\n' "$pick $sha1 $message"
while read -r squash action msg
do
case "$message" in
"$msg"*)
echo "$action $squash $action! $msg"
printf '%s\n' "$action $squash $action! $msg"
used="$used$squash "
;;
esac
@ -895,7 +895,7 @@ first and then run 'git rebase --continue' again."
do
if test t != "$PRESERVE_MERGES"
then
echo "pick $shortsha1 $rest" >> "$TODO"
printf '%s\n' "pick $shortsha1 $rest" >> "$TODO"
else
sha1=$(git rev-parse $shortsha1)
if test -z "$REBASE_ROOT"
@ -914,7 +914,7 @@ first and then run 'git rebase --continue' again."
if test f = "$preserve"
then
touch "$REWRITTEN"/$sha1
echo "pick $shortsha1 $rest" >> "$TODO"
printf '%s\n' "pick $shortsha1 $rest" >> "$TODO"
fi
fi
done

8
t/t3404-rebase-interactive.sh
View file

@ -637,13 +637,19 @@ test_expect_success 'set up commits with funny messages' '
git commit -a -m "end with slash\\" &&
echo >>file1 &&
test_tick &&
git commit -a -m "something (\000) that looks like octal" &&
echo >>file1 &&
test_tick &&
git commit -a -m "something (\n) that looks like a newline" &&
echo >>file1 &&
test_tick &&
git commit -a -m "another commit"
'
test_expect_success 'rebase-i history with funny messages' '
git rev-list A..funny >expect &&
test_tick &&
FAKE_LINES="1 2" git rebase -i A &&
FAKE_LINES="1 2 3 4" git rebase -i A &&
git rev-list A.. >actual &&
test_cmp expect actual
'