Johannes Schindelin <johannes.schindelin@xxxxxx> writes:
> +static int make_patch(struct commit *commit, struct replay_opts *opts)
> +{
> + struct strbuf buf = STRBUF_INIT;
> + struct rev_info log_tree_opt;
> + const char *subject, *p;
> + int res = 0;
> +
> + p = short_commit_name(commit);
> + if (write_message(p, strlen(p), rebase_path_stopped_sha(), 1) < 0)
> + return -1;
> +
> + strbuf_addf(&buf, "%s/patch", get_dir(opts));
> + memset(&log_tree_opt, 0, sizeof(log_tree_opt));
> + init_revisions(&log_tree_opt, NULL);
> + log_tree_opt.abbrev = 0;
> + log_tree_opt.diff = 1;
> + log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH;
> + log_tree_opt.disable_stdin = 1;
> + log_tree_opt.no_commit_id = 1;
> + log_tree_opt.diffopt.file = fopen(buf.buf, "w");
> + log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER;
> + if (!log_tree_opt.diffopt.file)
> + res |= error_errno(_("could not open '%s'"), buf.buf);
> + else {
> + res |= log_tree_commit(&log_tree_opt, commit);
> + fclose(log_tree_opt.diffopt.file);
> + }
> + strbuf_reset(&buf);
> +
> + strbuf_addf(&buf, "%s/message", get_dir(opts));
> + if (!file_exists(buf.buf)) {
> + const char *commit_buffer = get_commit_buffer(commit, NULL);
> + find_commit_subject(commit_buffer, &subject);
> + res |= write_message(subject, strlen(subject), buf.buf, 1);
> + unuse_commit_buffer(commit, commit_buffer);
> + }
> + strbuf_release(&buf);
> +
> + return res;
> +}
Unlike the scripted version, where a merge is shown with "diff --cc"
and a root commit is shown as "Root commit", this only deals with a
single-parent commit. Is this because this helper, at least in its
current form, will not be used by "rebase -m" and not with "--root"?
If that is the case, that is perfectly fine, perhaps that deserves a
mention in the log message and in-code comment before the function.