apply: force matching at the beginning.

diff --git a/diff-tree.c b/diff-tree.c
index 7207867a74d0869c6a6b839c040321c843ee9c2f..69bb74b3100d598c938fa01f1111deb85abcfac0 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -138,7 +138,10 @@ int main(int argc, const char **argv)
                opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
                                       DIFF_SETUP_USE_CACHE);
        while (fgets(line, sizeof(line), stdin))
-               diff_tree_stdin(line);
+               if (line[0] == '\n')
+                       fflush(stdout);
+               else
+                       diff_tree_stdin(line);
 
        return 0;
 }