X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-rebase--interactive.sh;h=314cd364b8f4df5e170dd0ffd9e874b3e6c2737c;hb=8130949bdc9c36f527148205b86a2ffe551cac53;hp=3dc659dd5896ce6c887eb786718919aef82f4ac6;hpb=b5a18787bd5c757b49a7ea4fdd73e62a1fee35de;p=git.git

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 3dc659dd5..314cd364b 100755
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -442,6 +442,30 @@ do_rest () {
 	done
 }
 
+# skip picking commits whose parents are unchanged
+skip_unnecessary_picks () {
+	fd=3
+	while read command sha1 rest
+	do
+		# fd=3 means we skip the command
+		case "$fd,$command,$(git rev-parse --verify --quiet $sha1^)" in
+		3,pick,"$ONTO"*|3,p,"$ONTO"*)
+			# pick a commit whose parent is current $ONTO -> skip
+			ONTO=$sha1
+			;;
+		3,#*|3,,*)
+			# copy comments
+			;;
+		*)
+			fd=1
+			;;
+		esac
+		echo "$command${sha1:+ }$sha1${rest:+ }$rest" >&$fd
+	done <"$TODO" >"$TODO.new" 3>>"$DONE" &&
+	mv -f "$TODO".new "$TODO" ||
+	die "Could not skip unnecessary pick commands"
+}
+
 # check if no other options are set
 is_standalone () {
 	test $# -eq 2 -a "$2" = '--' &&
@@ -746,6 +770,8 @@ EOF
 		has_action "$TODO" ||
 			die_abort "Nothing to do"
 
+		test -d "$REWRITTEN" || skip_unnecessary_picks
+
 		git update-ref ORIG_HEAD $HEAD
 		output git checkout $ONTO && do_rest
 		;;