docs: fix filter-branch subdir example for exotic repo names

diff --git a/color.c b/color.c
index 1b00554dd50d2960b4e66f229b0d2d0da8eb8c28..6a5a54ec668e08ddef0d2f27359f3ebb3272243b 100644 (file)
--- a/color.c
+++ b/color.c
@@ -211,3 +211,8 @@ int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
        va_end(args);
        return r;
 }
+
+int color_is_nil(const char *c)
+{
+       return !strcmp(c, "NIL");
+}