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sequencer.c: rework search for start of footer to improve clarity 

This code sequence is somewhat difficult to read.  Let's rewrite it and add
some comments to improve clarity.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Jonathan Nieder 2013-02-12 02:17:28 -08:00 committed by Junio C Hamano
parent e8a1f5a2ae
commit fa1727fb21
1 changed files with 6 additions and 4 deletions
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10
sequencer.c
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@ -1019,19 +1019,21 @@ int sequencer_pick_revisions(struct replay_opts *opts)


static int ends_rfc2822_footer(struct strbuf *sb, int ignore_footer) static int ends_rfc2822_footer(struct strbuf *sb, int ignore_footer)
{ {
int ch; char ch, prev;
int hit = 0;
int i, j, k; int i, j, k;
int len = sb->len - ignore_footer; int len = sb->len - ignore_footer;
int first = 1; int first = 1;
const char *buf = sb->buf; const char *buf = sb->buf;


prev = '\0';
for (i = len - 1; i > 0; i--) { for (i = len - 1; i > 0; i--) {
if (hit && buf[i] == '\n') ch = buf[i];
if (prev == '\n' && ch == '\n') /* paragraph break */
break; break;
hit = (buf[i] == '\n'); prev = ch;
} }


/* advance to start of last paragraph */
while (i < len - 1 && buf[i] == '\n') while (i < len - 1 && buf[i] == '\n')
i++; i++;