Brandon Casey wrote:
> Teach append_signoff to detect whether a blank line exists at the position
> that the signed-off-by line will be added, and avoid adding an additional
> one if one already exists. This is necessary to allow format-patch to add a
> s-o-b to a patch with no commit message without adding an extra newline.
I assume this means you're preserving historical behavior when adding
a sign-off to a commit with empty description (which is a good thing),
but what is that behavior? Is it a deliberate choice or something
that developed by default?
[...]
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -1118,11 +1118,15 @@ void append_signoff(struct strbuf *msgbuf, int
> ignore_footer, unsigned flag)
> for (i = msgbuf->len - 1 - ignore_footer; i > 0 && msgbuf->buf[i - 1]
> != '\n'; i--)
> ; /* do nothing */
>
> - if (i)
> - has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer);
> -
> - if (!has_footer)
> - strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, "\n", 1);
> + if (msgbuf->buf[i] != '\n') {
> + if (i)
> + has_footer = has_conforming_footer(msgbuf, &sob,
> + ignore_footer);
> +
> + if (!has_footer)
> + strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
> + "\n", 1);
> + }
>
> if (has_footer != 3 && (!no_dup_sob || has_footer != 2))
This is too much nesting for my small mind to keep track of. Am I
correct in imagining the effect is the same as the following?
has_footer = has_conforming_footer(...)
if (!has_footer && msgbuf->buf[i] != '\n')
strbuf_splice(...); /* add blank line */
if (has_footer != 3 && ...
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