test handling of zero-length user-defined strings

3 files changed, 36 insertions, 2 deletions

diff --git a/regress/usr.bin/mandoc/roff/string/Makefile b/regress/usr.bin/mandoc/roff/string/Makefile
index 5577da4097e..d415793d209 100644
--- a/regress/usr.bin/mandoc/roff/string/Makefile
+++ b/regress/usr.bin/mandoc/roff/string/Makefile
@@ -1,5 +1,9 @@
-# $OpenBSD: Makefile,v 1.2 2010/12/09 23:01:18 schwarze Exp $
+# $OpenBSD: Makefile,v 1.3 2011/01/01 21:14:09 schwarze Exp $
 
-REGRESS_TARGETS=escape infinite
+REGRESS_TARGETS=escape infinite zerolength
+GROFF_TARGETS=escape zerolength
+
+# The infinite test fails badly with groff-1.20.1:
+# It fails to print the following text.
 
 .include <bsd.regress.mk>
diff --git a/regress/usr.bin/mandoc/roff/string/zerolength.in b/regress/usr.bin/mandoc/roff/string/zerolength.in
new file mode 100644
index 00000000000..0d4d9bacc1f
--- /dev/null
+++ b/regress/usr.bin/mandoc/roff/string/zerolength.in
@@ -0,0 +1,16 @@
+.TH STRING-ZEROLENGTH 1 "December 19, 2010"
+.SH NAME
+string-zerolength - handling of zero-length user-defined strings
+.SH DESCRIPTION
+.ds dszero "
+.de dezero
+..
+use zero-length string:
+x\*[dszero]x
+.dszero
+x
+.PP
+use zero-length macro:
+x\*[dezero]x
+.dezero
+x
diff --git a/regress/usr.bin/mandoc/roff/string/zerolength.out_ascii b/regress/usr.bin/mandoc/roff/string/zerolength.out_ascii
new file mode 100644
index 00000000000..d9cce86d952
--- /dev/null
+++ b/regress/usr.bin/mandoc/roff/string/zerolength.out_ascii
@@ -0,0 +1,14 @@
+STRING-ZEROLENGTH(1)                                      STRING-ZEROLENGTH(1)
+
+
+
+NNAAMMEE
+       string-zerolength - handling of zero-length user-defined strings
+
+DDEESSCCRRIIPPTTIIOONN
+       use zero-length string: xx x
+
+       use zero-length macro: xx x
+
+
+