diff: avoid generating unused hunk header lines

diff --git a/xdiff-interface.c b/xdiff-interface.c
index eb9c05a1e34d6d9921bcb379ff0bdf7fe6c643bf..b99a57825f8510907f88575354cccf25eafd0052 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -157,6 +157,12 @@ int xdi_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp, xdemitconf_t co
        return xdl_diff(&a, &b, xpp, xecfg, xecb);
 }
 
+void discard_hunk_line(void *priv,
+                      long ob, long on, long nb, long nn,
+                      const char *func, long funclen)
+{
+}
+
 int xdi_diff_outf(mmfile_t *mf1, mmfile_t *mf2,
                  xdiff_emit_hunk_fn hunk_fn,
                  xdiff_emit_line_fn line_fn,