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git/git-rebase--am.sh
Ed Maste 9b35cadc2c rebase: update comment about FreeBSD /bin/sh
Commit 9f50d32 introduced a fix for FreeBSD /bin/sh misbehaviour
when dot-sourcing a file containing "return" statements outside of
any function, from a function in another shell script. That issue
affects FreeBSD 9.x, and is not present in the /bin/sh in FreeBSD
10.3 and later. Update the comment to clarify this.

The example from 9f50d32's commit message produces the expected output
on FreeBSD 10.3 and -CURRENT (the upcoming 11.0):

% sh script1.sh
only this line should show
%

Signed-off-by: Ed Maste <emaste@freebsd.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-17 11:04:38 -07:00

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# This shell script fragment is sourced by git-rebase to implement
# its default, fast, patch-based, non-interactive mode.
#
# Copyright (c) 2010 Junio C Hamano.
#
# The whole contents of this file is run by dot-sourcing it from
# inside a shell function. It used to be that "return"s we see
# below were not inside any function, and expected to return
# to the function that dot-sourced us.
#
# However, older (9.x) versions of FreeBSD /bin/sh misbehave on such a
# construct and continue to run the statements that follow such a "return".
# As a work-around, we introduce an extra layer of a function
# here, and immediately call it after defining it.
git_rebase__am () {
case "$action" in
continue)
git am --resolved --resolvemsg="$resolvemsg" \
${gpg_sign_opt:+"$gpg_sign_opt"} &&
move_to_original_branch
return
;;
skip)
git am --skip --resolvemsg="$resolvemsg" &&
move_to_original_branch
return
;;
esac
if test -z "$rebase_root"
# this is now equivalent to ! -z "$upstream"
then
revisions=$upstream...$orig_head
else
revisions=$onto...$orig_head
fi
ret=0
if test -n "$keep_empty"
then
# we have to do this the hard way. git format-patch completely squashes
# empty commits and even if it didn't the format doesn't really lend
# itself well to recording empty patches. fortunately, cherry-pick
# makes this easy
git cherry-pick ${gpg_sign_opt:+"$gpg_sign_opt"} --allow-empty \
--right-only "$revisions" \
${restrict_revision+^$restrict_revision}
ret=$?
else
rm -f "$GIT_DIR/rebased-patches"
git format-patch -k --stdout --full-index --cherry-pick --right-only \
--src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \
"$revisions" ${restrict_revision+^$restrict_revision} \
>"$GIT_DIR/rebased-patches"
ret=$?
if test 0 != $ret
then
rm -f "$GIT_DIR/rebased-patches"
case "$head_name" in
refs/heads/*)
git checkout -q "$head_name"
;;
*)
git checkout -q "$orig_head"
;;
esac
cat >&2 <<-EOF
git encountered an error while preparing the patches to replay
these revisions:
$revisions
As a result, git cannot rebase them.
EOF
return $ret
fi
git am $git_am_opt --rebasing --resolvemsg="$resolvemsg" \
${gpg_sign_opt:+"$gpg_sign_opt"} <"$GIT_DIR/rebased-patches"
ret=$?
rm -f "$GIT_DIR/rebased-patches"
fi
if test 0 != $ret
then
test -d "$state_dir" && write_basic_state
return $ret
fi
move_to_original_branch
}
# ... and then we call the whole thing.
git_rebase__am