X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-rebase--interactive.sh;h=9187e9bdba4792ab9d0f5532128ff87e9329ab1e;hb=812d2a3d61b1bbb1931aff2ed6d2a17e939f5bf2;hp=1569a7ad915988cfc14be71eb550debcd134f864;hpb=a25eb13909088f04f87acec26c522cc555f6b4a9;p=git.git

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 1569a7ad9..9187e9bdb 100755
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -28,6 +28,7 @@ abort              abort rebasing process and restore original branch
 skip               skip current patch and continue rebasing process
 no-verify          override pre-rebase hook from stopping the operation
 root               rebase all reachable commmits up to the root(s)
+autosquash         move commits that begin with squash!/fixup! under -i
 "
 
 . git-sh-setup
@@ -101,6 +102,7 @@ ONTO=
 VERBOSE=
 OK_TO_SKIP_PRE_REBASE=
 REBASE_ROOT=
+AUTOSQUASH=
 
 GIT_CHERRY_PICK_HELP="  After resolving the conflicts,
 mark the corrected paths with 'git add <paths>', and
@@ -213,10 +215,10 @@ has_action () {
 # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
 # GIT_AUTHOR_DATE exported from the current environment.
 do_with_author () {
-	GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \
-	GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \
-	GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \
-	"$@"
+	(
+		export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
+		"$@"
+	)
 }
 
 pick_one () {
@@ -233,7 +235,7 @@ pick_one () {
 	parent_sha1=$(git rev-parse --verify $sha1^) ||
 		die "Could not get the parent of $sha1"
 	current_sha1=$(git rev-parse --verify HEAD)
-	if test -z "$no_ff" -a "$current_sha1" = "$parent_sha1"
+	if test -z "$no_ff" && test "$current_sha1" = "$parent_sha1"
 	then
 		output git reset --hard $sha1
 		output warn Fast-forward to $(git rev-parse --short $sha1)
@@ -408,6 +410,21 @@ peek_next_command () {
 	sed -n -e "/^#/d" -e "/^$/d" -e "s/ .*//p" -e "q" < "$TODO"
 }
 
+# A squash/fixup has failed.  Prepare the long version of the squash
+# commit message, then die_with_patch.  This code path requires the
+# user to edit the combined commit message for all commits that have
+# been squashed/fixedup so far.  So also erase the old squash
+# messages, effectively causing the combined commit to be used as the
+# new basis for any further squash/fixups.  Args: sha1 rest
+die_failed_squash() {
+	mv "$SQUASH_MSG" "$MSG" || exit
+	rm -f "$FIXUP_MSG"
+	cp "$MSG" "$GIT_DIR"/MERGE_MSG || exit
+	warn
+	warn "Could not apply $1... $2"
+	die_with_patch $1 ""
+}
+
 do_next () {
 	rm -f "$MSG" "$AUTHOR_SCRIPT" "$AMEND" || exit
 	read command sha1 rest < "$TODO"
@@ -465,58 +482,31 @@ do_next () {
 
 		mark_action_done
 		update_squash_messages $squash_style $sha1
-		failed=f
 		author_script=$(get_author_ident_from_commit HEAD)
 		echo "$author_script" > "$AUTHOR_SCRIPT"
 		eval "$author_script"
 		output git reset --soft HEAD^
-		pick_one -n $sha1 || failed=t
+		pick_one -n $sha1 || die_failed_squash $sha1 "$rest"
 		case "$(peek_next_command)" in
 		squash|s|fixup|f)
 			# This is an intermediate commit; its message will only be
 			# used in case of trouble.  So use the long version:
-			if test $failed = f
-			then
-				do_with_author output git commit --no-verify -F "$SQUASH_MSG" ||
-					failed=t
-			fi
-			if test $failed = t
-			then
-				cp "$SQUASH_MSG" "$MSG" || exit
-				# After any kind of hiccup, prevent committing without
-				# opening the commit message editor:
-				rm -f "$FIXUP_MSG"
-				cp "$MSG" "$GIT_DIR"/MERGE_MSG || exit
-				warn
-				warn "Could not apply $sha1... $rest"
-				die_with_patch $sha1 ""
-			fi
+			do_with_author output git commit --no-verify -F "$SQUASH_MSG" ||
+				die_failed_squash $sha1 "$rest"
 			;;
 		*)
 			# This is the final command of this squash/fixup group
-			if test $failed = f
+			if test -f "$FIXUP_MSG"
 			then
-				if test -f "$FIXUP_MSG"
-				then
-					do_with_author git commit --no-verify -F "$FIXUP_MSG" ||
-						failed=t
-				else
-					cp "$SQUASH_MSG" "$GIT_DIR"/SQUASH_MSG || exit
-					rm -f "$GIT_DIR"/MERGE_MSG
-					do_with_author git commit --no-verify -e ||
-						failed=t
-				fi
-			fi
-			rm -f "$FIXUP_MSG"
-			if test $failed = t
-			then
-				mv "$SQUASH_MSG" "$MSG" || exit
-				cp "$MSG" "$GIT_DIR"/MERGE_MSG || exit
-				warn
-				warn "Could not apply $sha1... $rest"
-				die_with_patch $sha1 ""
+				do_with_author git commit --no-verify -F "$FIXUP_MSG" ||
+					die_failed_squash $sha1 "$rest"
+			else
+				cp "$SQUASH_MSG" "$GIT_DIR"/SQUASH_MSG || exit
+				rm -f "$GIT_DIR"/MERGE_MSG
+				do_with_author git commit --no-verify -e ||
+					die_failed_squash $sha1 "$rest"
 			fi
-			rm -f "$SQUASH_MSG"
+			rm -f "$SQUASH_MSG" "$FIXUP_MSG"
 			;;
 		esac
 		;;
@@ -601,6 +591,56 @@ get_saved_options () {
 	test -f "$DOTEST"/rebase-root && REBASE_ROOT=t
 }
 
+# Rearrange the todo list that has both "pick sha1 msg" and
+# "pick sha1 fixup!/squash! msg" appears in it so that the latter
+# comes immediately after the former, and change "pick" to
+# "fixup"/"squash".
+rearrange_squash () {
+	sed -n -e 's/^pick \([0-9a-f]*\) \(squash\)! /\1 \2 /p' \
+		-e 's/^pick \([0-9a-f]*\) \(fixup\)! /\1 \2 /p' \
+		"$1" >"$1.sq"
+	test -s "$1.sq" || return
+
+	used=
+	while read pick sha1 message
+	do
+		case " $used" in
+		*" $sha1 "*) continue ;;
+		esac
+		echo "$pick $sha1 $message"
+		while read squash action msg
+		do
+			case "$message" in
+			"$msg"*)
+				echo "$action $squash $action! $msg"
+				used="$used$squash "
+				;;
+			esac
+		done <"$1.sq"
+	done >"$1.rearranged" <"$1"
+	cat "$1.rearranged" >"$1"
+	rm -f "$1.sq" "$1.rearranged"
+}
+
+LF='
+'
+parse_onto () {
+	case "$1" in
+	*...*)
+		if	left=${1%...*} right=${1#*...} &&
+			onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
+		then
+			case "$onto" in
+			?*"$LF"?* | '')
+				exit 1 ;;
+			esac
+			echo "$onto"
+			exit 0
+		fi
+	esac
+	git rev-parse --verify "$1^0"
+}
+
 while test $# != 0
 do
 	case "$1" in
@@ -705,9 +745,12 @@ first and then run 'git rebase --continue' again."
 	--root)
 		REBASE_ROOT=t
 		;;
+	--autosquash)
+		AUTOSQUASH=t
+		;;
 	--onto)
 		shift
-		ONTO=$(git rev-parse --verify "$1") ||
+		ONTO=$(parse_onto "$1") ||
 			die "Does not point to a valid commit: $1"
 		;;
 	--)
@@ -857,6 +900,7 @@ first and then run 'git rebase --continue' again."
 		fi
 
 		test -s "$TODO" || echo noop >> "$TODO"
+		test -n "$AUTOSQUASH" && rearrange_squash "$TODO"
 		cat >> "$TODO" << EOF
 
 # Rebase $SHORTREVISIONS onto $SHORTONTO
@@ -878,7 +922,7 @@ EOF
 
 		cp "$TODO" "$TODO".backup
 		git_editor "$TODO" ||
-			die "Could not execute editor"
+			die_abort "Could not execute editor"
 
 		has_action "$TODO" ||
 			die_abort "Nothing to do"