diff -r 09f320067591 -r b5bb0f99064d mercurial/thirdparty/xdiff/xdiffi.h
--- a/mercurial/thirdparty/xdiff/xdiffi.h	Sun Mar 04 00:07:04 2018 -0800
+++ b/mercurial/thirdparty/xdiff/xdiffi.h	Sun Mar 04 00:17:49 2018 -0800
@@ -56,9 +56,5 @@
 void xdl_free_script(xdchange_t *xscr);
 int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
 		  xdemitconf_t const *xecfg);
-int xdl_do_patience_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
-		xdfenv_t *env);
-int xdl_do_histogram_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
-		xdfenv_t *env);
 
 #endif /* #if !defined(XDIFFI_H) */