Show changes to 2 files +196 −20
rebase-interactive.c, sequencer.c
diff --git a/rebase-interactive.c b/rebase-interactive.c
index 762853bc7e..c3bd02adee 100644
--- a/rebase-interactive.c
+++ b/rebase-interactive.c
@@ -44,7 +44,9 @@ void append_todo_help(int command_count,
"r, reword <commit> = use commit, but edit the commit message\n"
"e, edit <commit> = use commit, but stop for amending\n"
"s, squash <commit> = use commit, but meld into previous commit\n"
-"f, fixup <commit> = like \"squash\", but discard this commit's log message\n"
+"f, fixup [-C | -c] <commit> = like \"squash\", but discard this\n"
+" commit's log message. Use -C to replace with this\n"
+" commit message or -c to edit the commit message\n"
"x, exec <command> = run command (the rest of the line) using shell\n"
"b, break = stop here (continue rebase later with 'git rebase --continue')\n"
"d, drop <commit> = remove commit\n"
diff --git a/sequencer.c b/sequencer.c
index b9295b5a02..db016717d1 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -1718,6 +1718,12 @@ static int is_pick_or_similar(enum todo_command command)
}
}
+enum todo_item_flags {
+ TODO_EDIT_MERGE_MSG = (1 << 0),
+ TODO_REPLACE_FIXUP_MSG = (1 << 1),
+ TODO_EDIT_FIXUP_MSG = (1 << 2),
+};
+
static size_t subject_length(const char *body)
{
size_t i, len = 0;
@@ -1740,34 +1746,177 @@ static const char first_commit_msg_str[] =
N_("This is the 1st commit message:");
static const char nth_commit_msg_fmt[] =
N_("This is the commit message #%d:");
+static const char skip_first_commit_msg_str[] =
+N_("The 1st commit message will be skipped:");
static const char skip_nth_commit_msg_fmt[] =
N_("The commit message #%d will be skipped:");
static const char combined_commit_msg_str[] =
N_("This is a combination of %d commits.");
-static void append_squash_message(struct strbuf *buf, const char *body,
- struct replay_opts *opts)
+static int check_fixup_flag(enum todo_command command,
+ enum todo_item_flags flag)
+{
+ return command == TODO_FIXUP && ((flag & TODO_REPLACE_FIXUP_MSG) ||
+ (flag & TODO_EDIT_FIXUP_MSG));
+}
+
+/*
+ * Wrapper around strbuf_add_commented_lines() which avoids double
+ * commenting commit subjects.
+ */
+static void add_commented_lines(struct strbuf *buf, const void *str, size_t len)
+{
+ const char *s = str;
+ while (len > 0 && s[0] == comment_line_char) {
+ size_t count;
+ const char *n = memchr(s, '\n', len);
+ if (!n)
+ count = len;
+ else
+ count = n - s + 1;
+ strbuf_add(buf, s, count);
+ s += count;
+ len -= count;
+ }
+ strbuf_add_commented_lines(buf, s, len);
+}
+
+/* Does the current fixup chain contain a squash command? */
+static int seen_squash(struct replay_opts *opts)
{
- size_t commented_len = 0;
+ return starts_with(opts->current_fixups.buf, "squash") ||
+ strstr(opts->current_fixups.buf, "\nsquash");
+}
- unlink(rebase_path_fixup_msg());
- if (starts_with(body, "squash!") || starts_with(body, "fixup!"))
+static void update_comment_bufs(struct strbuf *buf1, struct strbuf *buf2, int n)
+{
+ strbuf_setlen(buf1, 2);
+ strbuf_addf(buf1, nth_commit_msg_fmt, n);
+ strbuf_addch(buf1, '\n');
+ strbuf_setlen(buf2, 2);
+ strbuf_addf(buf2, skip_nth_commit_msg_fmt, n);
+ strbuf_addch(buf2, '\n');
+}
+
+/*
+ * Comment out any un-commented commit messages, updating the message comments
+ * to say they will be skipped but do not comment out the empty lines that
+ * surround commit messages and their comments.
+ */
+static void update_squash_message_for_fixup(struct strbuf *msg)
+{
+ void (*copy_lines)(struct strbuf *, const void *, size_t) = strbuf_add;
+ struct strbuf buf1 = STRBUF_INIT, buf2 = STRBUF_INIT;
+ const char *s, *start;
+ char *orig_msg;
+ size_t orig_msg_len;
+ int i = 1;
+
+ strbuf_addf(&buf1, "# %s\n", first_commit_msg_str);
+ strbuf_addf(&buf2, "# %s\n", skip_first_commit_msg_str);
+ s = start = orig_msg = strbuf_detach(msg, &orig_msg_len);
+ while (s) {
+ const char *next;
+ size_t off;
+ if (skip_prefix(s, buf1.buf, &next)) {
+ /*
+ * Copy the last message, preserving the blank line
+ * preceding the current line
+ */
+ off = (s > start + 1 && s[-2] == '\n') ? 1 : 0;
+ copy_lines(msg, start, s - start - off);
+ if (off)
+ strbuf_addch(msg, '\n');
+ /*
+ * The next message needs to be commented out but the
+ * message header is already commented out so just copy
+ * it and the blank line that follows it.
+ */
+ strbuf_addbuf(msg, &buf2);
+ if (*next == '\n')
+ strbuf_addch(msg, *next++);
+ start = s = next;
+ copy_lines = add_commented_lines;
+ update_comment_bufs(&buf1, &buf2, ++i);
+ } else if (skip_prefix(s, buf2.buf, &next)) {
+ off = (s > start + 1 && s[-2] == '\n') ? 1 : 0;
+ copy_lines(msg, start, s - start - off);
+ start = s - off;
+ s = next;
+ copy_lines = strbuf_add;
+ update_comment_bufs(&buf1, &buf2, ++i);
+ } else {
+ s = strchr(s, '\n');
+ if (s)
+ s++;
+ }
+ }
+ copy_lines(msg, start, orig_msg_len - (start - orig_msg));
+ free(orig_msg);
+ strbuf_release(&buf1);
+ strbuf_release(&buf2);
+}
+
+static int append_squash_message(struct strbuf *buf, const char *body,
+ enum todo_command command, struct replay_opts *opts,
+ enum todo_item_flags flag)
+{
+ const char *fixup_msg;
+ size_t commented_len = 0, fixup_off;
+ /*
+ * amend is non-interactive and not normally used with fixup!
+ * or squash! commits, so only comment out those subjects when
+ * squashing commit messages.
+ */
+ if (starts_with(body, "amend!") ||
+ ((command == TODO_SQUASH || seen_squash(opts)) &&
+ (starts_with(body, "squash!") || starts_with(body, "fixup!"))))
commented_len = subject_length(body);
+
strbuf_addf(buf, "\n%c ", comment_line_char);
strbuf_addf(buf, _(nth_commit_msg_fmt),
++opts->current_fixup_count + 1);
strbuf_addstr(buf, "\n\n");
strbuf_add_commented_lines(buf, body, commented_len);
+ /* buf->buf may be reallocated so store an offset into the buffer */
+ fixup_off = buf->len;
strbuf_addstr(buf, body + commented_len);
+
+ /* fixup -C after squash behaves like squash */
+ if (check_fixup_flag(command, flag) && !seen_squash(opts)) {
+ /*
+ * We're replacing the commit message so we need to
+ * append the Signed-off-by: trailer if the user
+ * requested '--signoff'.
+ */
+ if (opts->signoff)
+ append_signoff(buf, 0, 0);
+
+ if ((command == TODO_FIXUP) &&
+ (flag & TODO_REPLACE_FIXUP_MSG)) {
+ fixup_msg = skip_blank_lines(buf->buf + fixup_off);
+ if (write_message(fixup_msg, strlen(fixup_msg),
+ rebase_path_fixup_msg(), 0))
+ return error(_("cannot write '%s'"),
+ rebase_path_fixup_msg());
+ } else {
+ unlink(rebase_path_fixup_msg());
+ }
+ } else {
+ unlink(rebase_path_fixup_msg());
+ }
+
+ return 0;
}
static int update_squash_messages(struct repository *r,
enum todo_command command,
struct commit *commit,
- struct replay_opts *opts)
+ struct replay_opts *opts,
+ enum todo_item_flags flag)
{
struct strbuf buf = STRBUF_INIT;
- int res;
+ int res = 0;
const char *message, *body;
const char *encoding = get_commit_output_encoding();
@@ -1787,6 +1936,8 @@ static int update_squash_messages(struct repository *r,
opts->current_fixup_count + 2);
strbuf_splice(&buf, 0, eol - buf.buf, header.buf, header.len);
strbuf_release(&header);
+ if (check_fixup_flag(command, flag) && !seen_squash(opts))
+ update_squash_message_for_fixup(&buf);
} else {
struct object_id head;
struct commit *head_commit;
@@ -1800,7 +1951,7 @@ static int update_squash_messages(struct repository *r,
return error(_("could not read HEAD's commit message"));
find_commit_subject(head_message, &body);
- if (command == TODO_FIXUP) {
+ if (command == TODO_FIXUP && !flag) {
if (write_message(body, strlen(body),
rebase_path_fixup_msg(), 0)) {
unuse_commit_buffer(head_commit, head_message);
@@ -1808,13 +1959,17 @@ static int update_squash_messages(struct repository *r,
rebase_path_fixup_msg());
}
}
-
strbuf_addf(&buf, "%c ", comment_line_char);
strbuf_addf(&buf, _(combined_commit_msg_str), 2);
strbuf_addf(&buf, "\n%c ", comment_line_char);
- strbuf_addstr(&buf, _(first_commit_msg_str));
+ strbuf_addstr(&buf, check_fixup_flag(command, flag) ?
+ _(skip_first_commit_msg_str) :
+ _(first_commit_msg_str));
strbuf_addstr(&buf, "\n\n");
- strbuf_addstr(&buf, body);
+ if (check_fixup_flag(command, flag))
+ strbuf_add_commented_lines(&buf, body, strlen(body));
+ else
+ strbuf_addstr(&buf, body);
unuse_commit_buffer(head_commit, head_message);
}
@@ -1824,8 +1979,8 @@ static int update_squash_messages(struct repository *r,
oid_to_hex(&commit->object.oid));
find_commit_subject(message, &body);
- if (command == TODO_SQUASH) {
- append_squash_message(&buf, body, opts);
+ if (command == TODO_SQUASH || check_fixup_flag(command, flag)) {
+ res = append_squash_message(&buf, body, command, opts, flag);
} else if (command == TODO_FIXUP) {
strbuf_addf(&buf, "\n%c ", comment_line_char);
strbuf_addf(&buf, _(skip_nth_commit_msg_fmt),
@@ -1836,7 +1991,9 @@ static int update_squash_messages(struct repository *r,
return error(_("unknown command: %d"), command);
unuse_commit_buffer(commit, message);
- res = write_message(buf.buf, buf.len, rebase_path_squash_msg(), 0);
+ if (!res)
+ res = write_message(buf.buf, buf.len, rebase_path_squash_msg(),
+ 0);
strbuf_release(&buf);
if (!res) {
@@ -2037,7 +2194,8 @@ static int do_pick_commit(struct repository *r,
if (command == TODO_REWORD)
reword = 1;
else if (is_fixup(command)) {
- if (update_squash_messages(r, command, commit, opts))
+ if (update_squash_messages(r, command, commit,
+ opts, item->flags))
return -1;
flags |= AMEND_MSG;
if (!final_fixup)
@@ -2202,10 +2360,6 @@ static int read_and_refresh_cache(struct repository *r,
return 0;
}
-enum todo_item_flags {
- TODO_EDIT_MERGE_MSG = 1
-};
-
void todo_list_release(struct todo_list *todo_list)
{
strbuf_release(&todo_list->buf);
@@ -2292,6 +2446,18 @@ static int parse_insn_line(struct repository *r, struct todo_item *item,
return 0;
}
+ if (item->command == TODO_FIXUP) {
+ if (skip_prefix(bol, "-C", &bol) &&
+ (*bol == ' ' || *bol == '\t')) {
+ bol += strspn(bol, " \t");
+ item->flags |= TODO_REPLACE_FIXUP_MSG;
+ } else if (skip_prefix(bol, "-c", &bol) &&
+ (*bol == ' ' || *bol == '\t')) {
+ bol += strspn(bol, " \t");
+ item->flags |= TODO_EDIT_FIXUP_MSG;
+ }
+ }
+
if (item->command == TODO_MERGE) {
if (skip_prefix(bol, "-C", &bol))
bol += strspn(bol, " \t");
@@ -5298,6 +5464,14 @@ static void todo_list_to_strbuf(struct repository *r, struct todo_list *todo_lis
short_commit_name(item->commit) :
oid_to_hex(&item->commit->object.oid);
+ if (item->command == TODO_FIXUP) {
+ if (item->flags & TODO_EDIT_FIXUP_MSG)
+ strbuf_addstr(buf, " -c");
+ else if (item->flags & TODO_REPLACE_FIXUP_MSG) {
+ strbuf_addstr(buf, " -C");
+ }
+ }
+
if (item->command == TODO_MERGE) {
if (item->flags & TODO_EDIT_MERGE_MSG)
strbuf_addstr(buf, " -c");
Charvi Mendiratta
