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-rw-r--r--src/editfns.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/editfns.c b/src/editfns.c
index 09f836c3eb4..1d6040da3f7 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -3267,7 +3267,7 @@ differences between the two buffers. */)
from = BEGV + k;
/* Find the last character position to be changed. */
- for (l = size_a; l > 0 && !bit_is_set (ctx.deletions, l - 1); l--)
+ for (l = size_a; l > k && !bit_is_set (ctx.deletions, l - 1); l--)
;
to = BEGV + l;
prepare_to_modify_buffer (from, to, NULL);