diff options
Diffstat (limited to 'builtin/apply.c')
| -rw-r--r-- | builtin/apply.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/builtin/apply.c b/builtin/apply.c index f6a3c97dd5..30eefc3c7b 100644 --- a/builtin/apply.c +++ b/builtin/apply.c @@ -2117,10 +2117,10 @@ static void update_pre_post_images(struct image *preimage, /* * Adjust the common context lines in postimage. This can be - * done in-place when we are just doing whitespace fixing, - * which does not make the string grow, but needs a new buffer - * when ignoring whitespace causes the update, since in this case - * we could have e.g. tabs converted to multiple spaces. + * done in-place when we are shrinking it with whitespace + * fixing, but needs a new buffer when ignoring whitespace or + * expanding leading tabs to spaces. + * * We trust the caller to tell us if the update can be done * in place (postlen==0) or not. */ @@ -2185,7 +2185,7 @@ static int match_fragment(struct image *img, int i; char *fixed_buf, *buf, *orig, *target; struct strbuf fixed; - size_t fixed_len; + size_t fixed_len, postlen; int preimage_limit; if (preimage->nr + try_lno <= img->nr) { @@ -2335,6 +2335,7 @@ static int match_fragment(struct image *img, strbuf_init(&fixed, preimage->len + 1); orig = preimage->buf; target = img->buf + try; + postlen = 0; for (i = 0; i < preimage_limit; i++) { size_t oldlen = preimage->line[i].len; size_t tgtlen = img->line[try_lno + i].len; @@ -2362,6 +2363,7 @@ static int match_fragment(struct image *img, match = (tgtfix.len == fixed.len - fixstart && !memcmp(tgtfix.buf, fixed.buf + fixstart, fixed.len - fixstart)); + postlen += tgtfix.len; strbuf_release(&tgtfix); if (!match) @@ -2399,8 +2401,10 @@ static int match_fragment(struct image *img, * hunk match. Update the context lines in the postimage. */ fixed_buf = strbuf_detach(&fixed, &fixed_len); + if (postlen < postimage->len) + postlen = 0; update_pre_post_images(preimage, postimage, - fixed_buf, fixed_len, 0); + fixed_buf, fixed_len, postlen); return 1; unmatch_exit: |