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pathspec: catch prepending :(prefix) on pathspec with short magic 

:(prefix) is in the long form. Suppose people pass :!foo with '!'
being the short form of magic 'bar', the code will happily turn it to
:(prefix..)!foo, which makes '!' part of the path and no longer a magic.

The correct form must be ':(prefix..,bar)foo', but as so far we
haven't had any magic in short form yet (*), the code to convert from
short form to long one will be inactive anyway. Let's postpone it
until a real short form magic appears.

(*) The short form magic '/' is a special case and won't be caught by
this die(), which is correct. When '/' magic is detected, prefixlen is
set back to 0 and the whole "if (prefixlen..)" block is skipped.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2013-09-05 10:40:38 +07:00 committed by Junio C Hamano
parent 4838c81fab
commit bc341c8b61
1 changed files with 3 additions and 1 deletions
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4
pathspec.c
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@ -231,7 +231,9 @@ static unsigned prefix_pathspec(struct pathspec_item *item,
const char *start = elt;
if (prefixlen && !literal_global) {
/* Preserve the actual prefix length of each pattern */
if (long_magic_end) {
if (short_magic)
die("BUG: prefixing on short magic is not supported");
else if (long_magic_end) {
strbuf_add(&sb, start, long_magic_end - start);
strbuf_addf(&sb, ",prefix:%d", prefixlen);
start = long_magic_end;