diff -up texinfo-6.4/info/info-utils.c.orig texinfo-6.4/info/info-utils.c
--- texinfo-6.4/info/info-utils.c.orig 2017-07-10 10:37:50.713333292 +0200
+++ texinfo-6.4/info/info-utils.c 2017-07-10 10:38:16.342348756 +0200
@@ -1280,6 +1280,7 @@ scan_reference_label (REFERENCE *entry,
&entry->nodename);
if (!len)
return 0; /* Input invalid. */
+ canonicalize_whitespace (entry->nodename);
label_len += len;
}
else