===================================================================
RCS file: /cvs/mandoc/regress/roff/esc/o.out_ascii,v
retrieving revision 1.1
retrieving revision 1.4
diff -u -p -r1.1 -r1.4
--- mandoc/regress/roff/esc/o.out_ascii	2017/02/08 03:03:21	1.1
+++ mandoc/regress/roff/esc/o.out_ascii	2025/06/26 18:08:50	1.4
@@ -11,4 +11,22 @@ DDEESSCCRRIIPPTTIIOONN
      wide/narrow/narrow: xO-|x
      narrow/narrow/wide: x|-Ox
 
-OpenBSD                        January 21, 2015                        OpenBSD
+   AArrgguummeenntt ddeelliimmiitteerrss
+     unsupported \r: xyu
+     ignored \&: xyu
+     useless \.: xyu
+     invalid \G: xyu
+     special \-: xyu
+     break \p: xyu
+     nospace \c: xyu
+     string expansion: xyu
+     register expansion: 23u
+     ignored \ON: xyu
+     special character: xyu
+     ignored \Z'str': xyu
+     horizontal motion: xyu
+     horizontal line: xyu
+     overstrike: xyu
+     unterminated: xy
+
+OpenBSD                          June 8, 2022                         ESC-O(1)