[PATCH 05/15] sequencer: lib'ify read_and_refresh_cache()

[Johannes Schindelin]

To be truly useful, the sequencer should never die() but always return
an error.

Signed-off-by: Johannes Schindelin <johannes.schinde...@gmx.de>
---
 sequencer.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/sequencer.c b/sequencer.c
index b90294f..a8c3a48 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -638,18 +638,21 @@ static int prepare_revs(struct replay_opts *opts)
        return 0;
 }
 
-static void read_and_refresh_cache(struct replay_opts *opts)
+static int read_and_refresh_cache(struct replay_opts *opts)
 {
        static struct lock_file index_lock;
        int index_fd = hold_locked_index(&index_lock, 0);
        if (read_index_preload(&the_index, NULL) < 0)
-               die(_("git %s: failed to read the index"), action_name(opts));
+               return error(_("git %s: failed to read the index"),
+                       action_name(opts));
        refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, 
NULL);
        if (the_index.cache_changed && index_fd >= 0) {
                if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK))
-                       die(_("git %s: failed to refresh the index"), 
action_name(opts));
+                       return error(_("git %s: failed to refresh the index"),
+                               action_name(opts));
        }
        rollback_lock_file(&index_lock);
+       return 0;
 }
 
 static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
@@ -977,7 +980,8 @@ static int pick_commits(struct commit_list *todo_list, 
struct replay_opts *opts)
        if (opts->allow_ff)
                assert(!(opts->signoff || opts->no_commit ||
                                opts->record_origin || opts->edit));
-       read_and_refresh_cache(opts);
+       if (read_and_refresh_cache(opts))
+               return -1;
 
        for (cur = todo_list; cur; cur = cur->next) {
                save_todo(cur, opts);
@@ -1041,7 +1045,8 @@ int sequencer_pick_revisions(struct replay_opts *opts)
        if (opts->subcommand == REPLAY_NONE)
                assert(opts->revs);
 
-       read_and_refresh_cache(opts);
+       if (read_and_refresh_cache(opts))
+               return -1;
 
        /*
         * Decide what to do depending on the arguments; a fresh
-- 
2.10.0.rc1.99.gcd66998


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