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-rw-r--r--xdiff-interface.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/xdiff-interface.c b/xdiff-interface.c
index 9ee877c..4b8e5cc 100644
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -115,17 +115,20 @@ static void trim_common_tail(mmfile_t *a, mmfile_t *b, long ctx)
char *bp = b->ptr + b->size;
long smaller = (a->size < b->size) ? a->size : b->size;
+ if (ctx)
+ return;
+
while (blk + trimmed <= smaller && !memcmp(ap - blk, bp - blk, blk)) {
trimmed += blk;
ap -= blk;
bp -= blk;
}
- while (recovered < trimmed && 0 <= ctx)
+ while (recovered < trimmed)
if (ap[recovered++] == '\n')
- ctx--;
- a->size -= (trimmed - recovered);
- b->size -= (trimmed - recovered);
+ break;
+ a->size -= trimmed - recovered;
+ b->size -= trimmed - recovered;
}
int xdi_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp, xdemitconf_t const *xecfg, xdemitcb_t *xecb)