Make zlib compression level configurable, and change default.

diff --git a/diff.c b/diff.c
index 5a71489a471568fb3aa51af5d74fa269ec4fadf1..428ff786ebdbd48a47ae5faf4c65c01e38403ad4 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -583,7 +583,7 @@ static unsigned char *deflate_it(char *data,
        z_stream stream;
 
        memset(&stream, 0, sizeof(stream));
-       deflateInit(&stream, Z_BEST_COMPRESSION);
+       deflateInit(&stream, zlib_compression_level);
        bound = deflateBound(&stream, size);
        deflated = xmalloc(bound);
        stream.next_out = deflated;