[RFC PATCH v3 6/9] Add and use git_rebase__interactive__preserve_merges
- From
Wink Saville <wink@saville.com>
- Date
- Mar 22, 2018, 16:57 UTC
- Message-ID
- <4b0a72043d351ced18b299c8bb9b0f3f27f101fb.1521690197.git.wink@saville.com>
- In-Reply-To
- <cover.1521690197.git.wink@saville.com>
At the moment it's an exact copy of git_rebase__interactive except the name has changed.
Signed-off-by: Wink Saville <wink@saville.com> --- git-rebase--interactive.sh | 108 +++++++++++++++++++++++++++++++++++++++++++++ git-rebase.sh | 7 ++- 2 files changed, 114 insertions(+), 1 deletion(-)
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 2c10a7f1a..ab5513d80 100644 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -1058,3 +1058,111 @@ git_rebase__interactive () { complete_action } + +git_rebase__interactive__preserve_merges () { + initiate_action "$action" + ret=$? + if test $ret = 0; then + return 0 + fi + + setup_reflog_action + init_basic_state + + if test t = "$preserve_merges" + then + if test -z "$rebase_root" + then + mkdir "$rewritten" && + for c in $(git merge-base --all $orig_head $upstream) + do + echo $onto > "$rewritten"/$c || + die "$(gettext "Could not init rewritten commits")" + done + else + mkdir "$rewritten" && + echo $onto > "$rewritten"/root || + die "$(gettext "Could not init rewritten commits")" + fi + # No cherry-pick because our first pass is to determine + # parents to rewrite and skipping dropped commits would + # prematurely end our probe + merges_option= + else + merges_option="--no-merges --cherry-pick" + fi + + init_revisions_and_shortrevisions + + if test t != "$preserve_merges" + then + git rebase--helper --make-script ${keep_empty:+--keep-empty} \ + $revisions ${restrict_revision+^$restrict_revision} >"$todo" || + die "$(gettext "Could not generate todo list")" + else + format=$(git config --get rebase.instructionFormat) + # the 'rev-list .. | sed' requires %m to parse; the instruction requires %H to parse + git rev-list $merges_option --format="%m%H ${format:-%s}" \ + --reverse --left-right --topo-order \ + $revisions ${restrict_revision+^$restrict_revision} | \ + sed -n "s/^>//p" | + while read -r sha1 rest + do + + if test -z "$keep_empty" && is_empty_commit $sha1 && ! is_merge_commit $sha1 + then + comment_out="$comment_char " + else + comment_out= + fi + + if test -z "$rebase_root" + then + preserve=t + for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-) + do + if test -f "$rewritten"/$p + then + preserve=f + fi + done + else + preserve=f + fi + if test f = "$preserve" + then + touch "$rewritten"/$sha1 + printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo" + fi + done + fi + + # Watch for commits that been dropped by --cherry-pick + if test t = "$preserve_merges" + then + mkdir "$dropped" + # Save all non-cherry-picked changes + git rev-list $revisions --left-right --cherry-pick | \ + sed -n "s/^>//p" > "$state_dir"/not-cherry-picks + # Now all commits and note which ones are missing in + # not-cherry-picks and hence being dropped + git rev-list $revisions | + while read rev + do + if test -f "$rewritten"/$rev && + ! sane_grep "$rev" "$state_dir"/not-cherry-picks >/dev/null + then + # Use -f2 because if rev-list is telling us this commit is + # not worthwhile, we don't want to track its multiple heads, + # just the history of its first-parent for others that will + # be rebasing on top of it + git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev + sha1=$(git rev-list -1 $rev) + sane_grep -v "^[a-z][a-z]* $sha1" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo" + rm "$rewritten"/$rev + fi + done + fi + + complete_action +} diff --git a/git-rebase.sh b/git-rebase.sh index c4ec7c21b..b32282f4c 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -199,7 +199,12 @@ run_specific_rebase () { if test "$type" = interactive then . git-rebase--interactive - git_rebase__interactive + if test "$preserve_merges" = t + then + git_rebase__interactive__preserve_merges + else + git_rebase__interactive + fi ret=$? else . git-rebase--$type
-- 2.16.2