Use the default width for .RS without arguments.

Reduces groff-mandoc differences in base and Xenocara by about 4%.
Found while looking at wpa_supplicant(8).

3 files changed, 43 insertions, 2 deletions

diff --git a/regress/usr.bin/mandoc/man/RS/Makefile b/regress/usr.bin/mandoc/man/RS/Makefile
index 67efb7488d6..4c62bb30e47 100644
--- a/regress/usr.bin/mandoc/man/RS/Makefile
+++ b/regress/usr.bin/mandoc/man/RS/Makefile
@@ -1,7 +1,7 @@
-# $OpenBSD: Makefile,v 1.10 2015/02/06 07:12:34 schwarze Exp $
+# $OpenBSD: Makefile,v 1.11 2015/04/06 13:34:54 schwarze Exp $
 
 REGRESS_TARGETS	 = breaking broken empty literal lonelyRE
-REGRESS_TARGETS	+= nested noRE REarg width
+REGRESS_TARGETS	+= nested noRE nowidth REarg width
 LINT_TARGETS	 = empty lonelyRE noRE REarg
 
 .include <bsd.regress.mk>
diff --git a/regress/usr.bin/mandoc/man/RS/nowidth.in b/regress/usr.bin/mandoc/man/RS/nowidth.in
new file mode 100644
index 00000000000..ee53489a82f
--- /dev/null
+++ b/regress/usr.bin/mandoc/man/RS/nowidth.in
@@ -0,0 +1,20 @@
+.TH RS-NESTED 1 "April 6, 2015" OpenBSD
+.SH NAME
+RS-nowidth \- indentation blocks not specifying a width
+.SH DESCRIPTION
+regular text
+.RS
+top-level indented list
+.RE
+regular text
+.TP 2n
+\(bu
+bullet list
+.RS
+indented text
+.RE
+regular text
+.RS
+top-level indented list
+.RE
+regular text
diff --git a/regress/usr.bin/mandoc/man/RS/nowidth.out_ascii b/regress/usr.bin/mandoc/man/RS/nowidth.out_ascii
new file mode 100644
index 00000000000..c72f18f23e1
--- /dev/null
+++ b/regress/usr.bin/mandoc/man/RS/nowidth.out_ascii
@@ -0,0 +1,21 @@
+RS-NESTED(1)                General Commands Manual               RS-NESTED(1)
+
+
+
+NNAAMMEE
+       RS-nowidth - indentation blocks not specifying a width
+
+DDEESSCCRRIIPPTTIIOONN
+       regular text
+              top-level indented list
+       regular text
+
+       +o bullet list
+         indented text
+       regular text
+         top-level indented list
+       regular text
+
+
+
+OpenBSD                          April 6, 2015                    RS-NESTED(1)