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-rw-r--r--Makefile6
-rw-r--r--apply.c8
2 files changed, 14 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 317be3c373..697a6ddf60 100644
--- a/Makefile
+++ b/Makefile
@@ -55,6 +55,9 @@ all:
#
# Define NO_ICONV if your libc does not properly support iconv.
#
+# Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
+# a missing newline at the end of the file.
+#
# Define COLLISION_CHECK below if you believe that SHA1's
# 1461501637330902918203684832716283019655932542976 hashes do not give you
# sufficient guarantee that no collisions between objects will ever happen.
@@ -403,6 +406,9 @@ else
endif
endif
endif
+ifdef NO_ACCURATE_DIFF
+ ALL_CFLAGS += -DNO_ACCURATE_DIFF
+endif
ALL_CFLAGS += -DSHA1_HEADER=$(call shellquote,$(SHA1_HEADER)) $(COMPAT_CFLAGS)
LIB_OBJS += $(COMPAT_OBJS)
diff --git a/apply.c b/apply.c
index 2ad47fbbb3..1083d4f316 100644
--- a/apply.c
+++ b/apply.c
@@ -1142,6 +1142,14 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag)
size -= len;
}
+#ifdef NO_ACCURATE_DIFF
+ if (oldsize > 0 && old[oldsize - 1] == '\n' &&
+ newsize > 0 && new[newsize - 1] == '\n') {
+ oldsize--;
+ newsize--;
+ }
+#endif
+
offset = find_offset(buf, desc->size, old, oldsize, frag->newpos);
if (offset >= 0) {
int diff = newsize - oldsize;