Since 0fbb95d (am: don't call mailinfo if $rebasing, 2012-06-26), the
patch body to apply when running 'git am --rebasing' is not taken from
the mbox, but directly from the commit. If such a commit is "empty",
'git am --rebasing' still happily applies it and commits. However,
since the input to 'git am --rebasing' only ever comes from 'git
format-patch', which completely leaves the commit out from its output
if it's empty, no empty commits are ever created by 'git am
--rebasing'. By teaching 'git am --rebasing' a --keep-empty option and
letting the caller decide whether or not to keep empty commits, we can
unify the two different mechanisms that git-rebase--am.sh uses for
rebasing.
---
git-am.sh | 10 +++++++++-
git-rebase--am.sh | 20 ++++++--------------
2 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/git-am.sh b/git-am.sh
index b6a5300..37641b7 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -37,7 +37,8 @@ abort restore the original branch and abort the patching operation.
committer-date-is-author-date lie about committer date
ignore-date use current timestamp for author date
rerere-autoupdate update the index with reused conflict resolution if possible
-rebasing* (internal use for git-rebase)"
+rebasing* (internal use for git-rebase)
+keep-empty* (internal use for git-rebase)"
. git-sh-setup
. git-sh-i18n
@@ -375,6 +376,7 @@ git_apply_opt=
committer_date_is_author_date=
ignore_date=
allow_rerere_autoupdate=
+keep_empty=
if test "$(git config --bool --get am.keepcr)" = true
then
@@ -414,6 +416,8 @@ do
abort=t ;;
--rebasing)
rebasing=t threeway=t ;;
+ --keep-empty)
+ keep_empty=t ;;
-d|--dotest)
die "$(gettext "-d option is no longer supported. Do not use.")"
;;
@@ -669,6 +673,10 @@ do
echo "$commit" >"$dotest/original-commit"
get_author_ident_from_commit "$commit" >"$dotest/author-script"
git diff-tree --root --binary "$commit" >"$dotest/patch"
+ test -s "$dotest/patch" || test -n "$keep_empty" || {
+ go_next
+ continue
+ }
else
git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
<"$dotest/$msgnum" >"$dotest/info" ||
diff --git a/git-rebase--am.sh b/git-rebase--am.sh
index 392ebc9..37c1b23 100644
--- a/git-rebase--am.sh
+++ b/git-rebase--am.sh
@@ -17,20 +17,12 @@ skip)
esac
test -n "$rebase_root" && root_flag=--root
-
-if test -n "$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 --allow-empty "$revisions"
-else
- git format-patch -k --stdout --full-index --ignore-if-in-upstream \
- --src-prefix=a/ --dst-prefix=b/ \
- --no-renames $root_flag "$revisions" |
- git am $git_am_opt --rebasing --resolvemsg="$resolvemsg"
-fi && move_to_original_branch
+test -n "$keep_empty" && git_am_opt="$git_am_opt --keep-empty"
+git format-patch -k --stdout --full-index --ignore-if-in-upstream \
+ --src-prefix=a/ --dst-prefix=b/ \
+ --no-renames $root_flag "$revisions" |
+git am $git_am_opt --rebasing --resolvemsg="$resolvemsg" &&
+move_to_original_branch
ret=$?
test 0 != $ret -a -d "$state_dir" && write_basic_state
--
1.7.11.1.104.ge7b44f1
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