ident: use full dns names to generate email addresses
[gitweb.git] / git-rebase--interactive.sh
index 804001bb4e29873ef08d950a40cf1f1745e2aa27..0c19b7c7539192851d5bd43df686baa97dc0df73 100644 (file)
@@ -143,6 +143,21 @@ die_with_patch () {
        die "$2"
 }
 
+exit_with_patch () {
+       echo "$1" > "$state_dir"/stopped-sha
+       make_patch $1
+       git rev-parse --verify HEAD > "$amend"
+       warn "You can amend the commit now, with"
+       warn
+       warn "  git commit --amend"
+       warn
+       warn "Once you are satisfied with your changes, run"
+       warn
+       warn "  git rebase --continue"
+       warn
+       exit $2
+}
+
 die_abort () {
        rm -rf "$state_dir"
        die "$1"
@@ -152,6 +167,14 @@ has_action () {
        sane_grep '^[^#]' "$1" >/dev/null
 }
 
+is_empty_commit() {
+       tree=$(git rev-parse -q --verify "$1"^{tree} 2>/dev/null ||
+               die "$1: not a commit that can be picked")
+       ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null ||
+               ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904)
+       test "$tree" = "$ptree"
+}
+
 # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
 # GIT_AUTHOR_DATE exported from the current environment.
 do_with_author () {
@@ -176,12 +199,19 @@ git_sequence_editor () {
 
 pick_one () {
        ff=--ff
+
        case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac
        case "$force_rebase" in '') ;; ?*) ff= ;; esac
        output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1"
+
+       if is_empty_commit "$sha1"
+       then
+               empty_args="--allow-empty"
+       fi
+
        test -d "$rewritten" &&
                pick_one_preserving_merges "$@" && return
-       output git cherry-pick $ff "$@"
+       output git cherry-pick $empty_args $ff "$@"
 }
 
 pick_one_preserving_merges () {
@@ -408,7 +438,13 @@ do_next () {
                mark_action_done
                pick_one $sha1 ||
                        die_with_patch $sha1 "Could not apply $sha1... $rest"
-               git commit --amend --no-post-rewrite
+               git commit --amend --no-post-rewrite || {
+                       warn "Could not amend commit after successfully picking $sha1... $rest"
+                       warn "This is most likely due to an empty commit message, or the pre-commit hook"
+                       warn "failed. If the pre-commit hook failed, you may need to resolve the issue before"
+                       warn "you are able to reword the commit."
+                       exit_with_patch $sha1 1
+               }
                record_in_rewritten $sha1
                ;;
        edit|e)
@@ -417,19 +453,8 @@ do_next () {
                mark_action_done
                pick_one $sha1 ||
                        die_with_patch $sha1 "Could not apply $sha1... $rest"
-               echo "$sha1" > "$state_dir"/stopped-sha
-               make_patch $sha1
-               git rev-parse --verify HEAD > "$amend"
                warn "Stopped at $sha1... $rest"
-               warn "You can amend the commit now, with"
-               warn
-               warn "  git commit --amend"
-               warn
-               warn "Once you are satisfied with your changes, run"
-               warn
-               warn "  git rebase --continue"
-               warn
-               exit 0
+               exit_with_patch $sha1 0
                ;;
        squash|s|fixup|f)
                case "$command" in
@@ -662,7 +687,7 @@ rearrange_squash () {
 case "$action" in
 continue)
        # do we have anything to commit?
-       if git diff-index --cached --quiet --ignore-submodules HEAD --
+       if git diff-index --cached --quiet HEAD --
        then
                : Nothing to commit -- skip this
        else
@@ -770,9 +795,17 @@ git rev-list $merges_option --pretty=oneline --abbrev-commit \
        sed -n "s/^>//p" |
 while read -r shortsha1 rest
 do
+
+       if test -z "$keep_empty" && is_empty_commit $shortsha1
+       then
+               comment_out="# "
+       else
+               comment_out=
+       fi
+
        if test t != "$preserve_merges"
        then
-               printf '%s\n' "pick $shortsha1 $rest" >> "$todo"
+               printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo"
        else
                sha1=$(git rev-parse $shortsha1)
                if test -z "$rebase_root"
@@ -791,7 +824,7 @@ do
                if test f = "$preserve"
                then
                        touch "$rewritten"/$sha1
-                       printf '%s\n' "pick $shortsha1 $rest" >> "$todo"
+                       printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo"
                fi
        fi
 done
@@ -836,11 +869,19 @@ cat >> "$todo" << EOF
 #  f, fixup = like "squash", but discard this commit's log message
 #  x, exec = run command (the rest of the line) using shell
 #
+# These lines can be re-ordered; they are executed from top to bottom.
+#
 # If you remove a line here THAT COMMIT WILL BE LOST.
 # However, if you remove everything, the rebase will be aborted.
 #
 EOF
 
+if test -z "$keep_empty"
+then
+       echo "# Note that empty commits are commented out" >>"$todo"
+fi
+
+
 has_action "$todo" ||
        die_abort "Nothing to do"