On Sat, Feb 10, 2018 at 7:10 PM, Johannes Schindelin
<johannes.schinde...@gmx.de> wrote:
> [...]
> This commit implements the commands to label, and to reset to, given
> revisions. The syntax is:
>
>         label <name>
>         reset <name>
> [...]
> Signed-off-by: Johannes Schindelin <johannes.schinde...@gmx.de>
> ---
> diff --git a/sequencer.c b/sequencer.c
> @@ -1922,6 +1951,151 @@ static int do_exec(const char *command_line)
> +static int safe_append(const char *filename, const char *fmt, ...)
> +{
> +       [...]
> +       if (write_in_full(fd, buf.buf, buf.len) < 0) {
> +               error_errno(_("could not write to '%s'"), filename);
> +               rollback_lock_file(&lock);

strbuf_release(&buf);

> +               return -1;
> +       }
> +       if (commit_lock_file(&lock) < 0) {
> +               rollback_lock_file(&lock);

strbuf_release(&buf);

> +               return error(_("failed to finalize '%s'"), filename);
> +       }
> +

strbuf_release(&buf);

> +       return 0;
> +}
> +
> +static int do_reset(const char *name, int len, struct replay_opts *opts)
> +{
> +       [...]
> +       unpack_tree_opts.reset = 1;
> +
> +       if (read_cache_unmerged())

rollback_lock_file(&lock);
strbuf_release(&ref_name);

> +               return error_resolve_conflict(_(action_name(opts)));
> +
> +       if (!fill_tree_descriptor(&desc, &oid)) {
> +               error(_("failed to find tree of %s"), oid_to_hex(&oid));
> +               rollback_lock_file(&lock);
> +               free((void *)desc.buffer);
> +               strbuf_release(&ref_name);
> +               return -1;
> +       }

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