upload-archive: use start_command instead of fork

diff --git a/builtin/revert.c b/builtin/revert.c
index 010508d571a5425aac2e0f5390ebac9698a5d1cb..544e8c3057b2faf120dcfb219c6f8bcc4dec4b0a 100644 (file)
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -288,21 +288,22 @@ static char *get_encoding(const char *message)
 
 static void write_cherry_pick_head(struct commit *commit)
 {
+       const char *filename;
        int fd;
        struct strbuf buf = STRBUF_INIT;
 
        strbuf_addf(&buf, "%s\n", sha1_to_hex(commit->object.sha1));
 
-       fd = open(git_path("CHERRY_PICK_HEAD"), O_WRONLY | O_CREAT, 0666);
+       filename = git_path("CHERRY_PICK_HEAD");
+       fd = open(filename, O_WRONLY | O_CREAT, 0666);
        if (fd < 0)
-               die_errno(_("Could not open '%s' for writing"),
-                         git_path("CHERRY_PICK_HEAD"));
+               die_errno(_("Could not open '%s' for writing"), filename);
        if (write_in_full(fd, buf.buf, buf.len) != buf.len || close(fd))
-               die_errno(_("Could not write to '%s'"), git_path("CHERRY_PICK_HEAD"));
+               die_errno(_("Could not write to '%s'"), filename);
        strbuf_release(&buf);
 }
 
-static void print_advice(void)
+static void print_advice(int show_hint)
 {
        char *msg = getenv("GIT_CHERRY_PICK_HELP");
 
@@ -317,9 +318,11 @@ static void print_advice(void)
                return;
        }
 
-       advise("after resolving the conflicts, mark the corrected paths");
-       advise("with 'git add <paths>' or 'git rm <paths>'");
-       advise("and commit the result with 'git commit'");
+       if (show_hint) {
+               advise("after resolving the conflicts, mark the corrected paths");
+               advise("with 'git add <paths>' or 'git rm <paths>'");
+               advise("and commit the result with 'git commit'");
+       }
 }
 
 static void write_message(struct strbuf *msgbuf, const char *filename)
@@ -329,7 +332,7 @@ static void write_message(struct strbuf *msgbuf, const char *filename)
        int msg_fd = hold_lock_file_for_update(&msg_file, filename,
                                               LOCK_DIE_ON_ERROR);
        if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0)
-               die_errno(_("Could not write to %s."), filename);
+               die_errno(_("Could not write to %s"), filename);
        strbuf_release(msgbuf);
        if (commit_lock_file(&msg_file) < 0)
                die(_("Error wrapping up %s"), filename);
@@ -564,8 +567,6 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
                        strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
                        strbuf_addstr(&msgbuf, ")\n");
                }
-               if (!opts->no_commit)
-                       write_cherry_pick_head(commit);
        }
 
        if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REVERT) {
@@ -586,13 +587,22 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
                free_commit_list(remotes);
        }
 
+       /*
+        * If the merge was clean or if it failed due to conflict, we write
+        * CHERRY_PICK_HEAD for the subsequent invocation of commit to use.
+        * However, if the merge did not even start, then we don't want to
+        * write it at all.
+        */
+       if (opts->action == CHERRY_PICK && !opts->no_commit && (res == 0 || res == 1))
+               write_cherry_pick_head(commit);
+
        if (res) {
                error(opts->action == REVERT
                      ? _("could not revert %s... %s")
                      : _("could not apply %s... %s"),
                      find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
                      msg.subject);
-               print_advice();
+               print_advice(res == 1);
                rerere(opts->allow_rerere_auto);
        } else {
                if (!opts->no_commit)
@@ -758,7 +768,7 @@ static void read_populate_todo(struct commit_list **todo_list,
 
        fd = open(todo_file, O_RDONLY);
        if (fd < 0)
-               die_errno(_("Could not open %s."), todo_file);
+               die_errno(_("Could not open %s"), todo_file);
        if (strbuf_read(&buf, fd, 0) < 0) {
                close(fd);
                strbuf_release(&buf);
@@ -836,7 +846,7 @@ static int create_seq_dir(void)
        if (file_exists(seq_dir))
                return error(_("%s already exists."), seq_dir);
        else if (mkdir(seq_dir, 0777) < 0)
-               die_errno(_("Could not create sequencer directory '%s'."), seq_dir);
+               die_errno(_("Could not create sequencer directory %s"), seq_dir);
        return 0;
 }
 
@@ -850,7 +860,7 @@ static void save_head(const char *head)
        fd = hold_lock_file_for_update(&head_lock, head_file, LOCK_DIE_ON_ERROR);
        strbuf_addf(&buf, "%s\n", head);
        if (write_in_full(fd, buf.buf, buf.len) < 0)
-               die_errno(_("Could not write to %s."), head_file);
+               die_errno(_("Could not write to %s"), head_file);
        if (commit_lock_file(&head_lock) < 0)
                die(_("Error wrapping up %s."), head_file);
 }
@@ -867,7 +877,7 @@ static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
                die(_("Could not format %s."), todo_file);
        if (write_in_full(fd, buf.buf, buf.len) < 0) {
                strbuf_release(&buf);
-               die_errno(_("Could not write to %s."), todo_file);
+               die_errno(_("Could not write to %s"), todo_file);
        }
        if (commit_lock_file(&todo_lock) < 0) {
                strbuf_release(&buf);