t / t4101 / diff.1-2on commit utf8.c: move display_mode_esc_sequence_len() for use by other functions (4247fe7)
   1--- a/frotz
   2+++ b/frotz
   3@@ -1,3 +1,2 @@
   4 a
   5-b
   6-c
   7+b
   8\ No newline at end of file