sequencer: remember the onelines when parsing the todo file

The `git-rebase-todo` file contains a list of commands. Most of those
commands have the form

<verb> <sha1> <oneline>

The <oneline> is displayed primarily for the user's convenience, as
rebase -i really interprets only the <verb> <sha1> part. However, there
are *some* places in interactive rebase where the <oneline> is used to
display messages, e.g. for reporting at which commit we stopped.

So let's just remember it when parsing the todo file; we keep a copy of
the entire todo file anyway (to write out the new `done` and
`git-rebase-todo` file just before processing each command), so all we
need to do is remember the begin offsets and lengths.

As we will have to parse and remember the command-line for `exec` commands
later, we do not call the field "oneline" but rather "arg" (and will reuse
that for exec's command-line).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/sequencer.c b/sequencer.c
index 9f22c5ec410e40b4725f7f90d24010096ca5cbca..3d1fdacc54731c07e791fd5d7e1f27bd753c4f38 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -706,6 +706,8 @@ static int read_and_refresh_cache(struct replay_opts *opts)
 struct todo_item {
        enum todo_command command;
        struct commit *commit;
+       const char *arg;
+       int arg_len;
        size_t offset_in_buf;
 };
 
@@ -757,6 +759,9 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
        status = get_sha1(bol, commit_sha1);
        *end_of_object_name = saved;
 
+       item->arg = end_of_object_name + strspn(end_of_object_name, " \t");
+       item->arg_len = (int)(eol - item->arg);
+
        if (status < 0)
                return -1;
 
@@ -907,6 +912,8 @@ static int walk_revs_populate_todo(struct todo_list *todo_list,
 
                item->command = command;
                item->commit = commit;
+               item->arg = NULL;
+               item->arg_len = 0;
                item->offset_in_buf = todo_list->buf.len;
                subject_len = find_commit_subject(commit_buffer, &subject);
                strbuf_addf(&todo_list->buf, "%s %s %.*s\n", command_string,