From 1bf1a859ae980a73552c76fe20a5952a763ec81e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 23 May 2006 19:08:01 -0700 Subject: [PATCH] apply: treat EOF as proper context. Catalin noticed that we do not treat end-of-file condition shown in the patch text as the patch context. This causes a patch that appends at the end of the file to cleanly apply even if something else has been appended to the file. If this happened in the middle, we would refuse by saying that the file has conflicting modifications. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- apply.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/apply.c b/apply.c index 0ed9d132e..768b572a8 100644 --- a/apply.c +++ b/apply.c @@ -1333,6 +1333,7 @@ static int apply_line(char *output, const char *patch, int plen) static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag) { + int match_end; char *buf = desc->buffer; const char *patch = frag->patch; int offset, size = frag->size; @@ -1395,10 +1396,19 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag) newlines = new; leading = frag->leading; trailing = frag->trailing; + + /* + * If we don't have any trailing data in the patch, + * we want it to match at the end of the file. + */ + match_end = !trailing; + lines = 0; pos = frag->newpos; for (;;) { offset = find_offset(buf, desc->size, oldlines, oldsize, pos, &lines); + if (match_end && offset + oldsize != desc->size) + offset = -1; if (offset >= 0) { int diff = newsize - oldsize; unsigned long size = desc->size + diff; @@ -1428,6 +1438,10 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag) /* Am I at my context limits? */ if ((leading <= p_context) && (trailing <= p_context)) break; + if (match_end) { + match_end = 0; + continue; + } /* Reduce the number of context lines * Reduce both leading and trailing if they are equal * otherwise just reduce the larger context. -- 2.26.2