===================================================================
RCS file: /cvs/mandoc/regress/roff/cond/string.in,v
retrieving revision 1.1
retrieving revision 1.4
diff -u -p -r1.1 -r1.4
--- mandoc/regress/roff/cond/string.in	2017/06/14 14:02:40	1.1
+++ mandoc/regress/roff/cond/string.in	2019/02/06 21:11:44	1.4
@@ -1,4 +1,5 @@
-.TH STRING 1 "June 14, 2017" OpenBSD
+.\" $OpenBSD: string.in,v 1.4 2019/02/06 21:11:44 schwarze Exp $
+.TH STRING 1 "February 6, 2019"
 .SH NAME
 string \- conditional testing whether a string is defined
 .SH DESCRIPTION
@@ -27,3 +28,15 @@ mymacval
 .ie d myren now defined
 .el OOPS
 .if !d myren OOPS
+.PP
+standard macro is
+.ie d PP defined
+.el not defined \(em OOPS
+.PP
+identifier and tab:
+.ie d mystr	mystr is defined
+.el OOPS
+.PP
+escape sequence after identifier:
+.ie d mystr\(enmystr is defined
+.el OOPS