diff options
Diffstat (limited to 'diffcore-rename.c')
| -rw-r--r-- | diffcore-rename.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/diffcore-rename.c b/diffcore-rename.c index 34e83dac8..07782f4b7 100644 --- a/diffcore-rename.c +++ b/diffcore-rename.c @@ -5,6 +5,7 @@ #include "diff.h" #include "diffcore.h" #include "delta.h" +#include "count-delta.h" /* Table of rename/copy destinations */ @@ -158,13 +159,18 @@ static int estimate_similarity(struct diff_filespec *src, delta = diff_delta(src->data, src->size, dst->data, dst->size, &delta_size); - /* - * We currently punt here, but we may later end up parsing the - * delta to really assess the extent of damage. A big consecutive - * remove would produce small delta_size that affects quite a - * big portion of the file. + + /* A delta that has a lot of literal additions would have + * big delta_size no matter what else it does. */ + if (minimum_score < MAX_SCORE * delta_size / base_size) + return 0; + + /* Estimate the edit size by interpreting delta. */ + delta_size = count_delta(delta, delta_size); free(delta); + if (delta_size == UINT_MAX) + return 0; /* * Now we will give some score to it. 100% edit gets 0 points |