git-apply: fix whitespace stripping

The algorithm isn't right here: it accumulates any set of 8 spaces into
tabs even if they're separated by tabs, so

	<four spaces><tab><four spaces><tab>

is converted to

	<tab><tab><tab>

when it should be just

	<tab><tab>

So teach git-apply that a tab hides any group of less than 8 previous
spaces in a row.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
J. Bruce Fields 2007-09-16 18:49:00 -04:00 коммит произвёл Junio C Hamano
Родитель ece7b74903
Коммит d7416ecac8
1 изменённых файлов: 10 добавлений и 3 удалений

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@ -1642,15 +1642,22 @@ static int apply_line(char *output, const char *patch, int plen)
buf = output;
if (need_fix_leading_space) {
int consecutive_spaces = 0;
/* between patch[1..last_tab_in_indent] strip the
* funny spaces, updating them to tab as needed.
*/
for (i = 1; i < last_tab_in_indent; i++, plen--) {
char ch = patch[i];
if (ch != ' ')
if (ch != ' ') {
consecutive_spaces = 0;
*output++ = ch;
else if ((i % 8) == 0)
} else {
consecutive_spaces++;
if (consecutive_spaces == 8) {
*output++ = '\t';
consecutive_spaces = 0;
}
}
}
fixed = 1;
i = last_tab_in_indent;