Implement the \N'number' (numbered character) roff escape sequence.

Don't use it in new manuals, it is inherently non-portable, but we
need it for backward-compatibility with existing manuals, for example
in Xenocara driver pages.
ok kristaps@ matthieu@ jmc@

4 files changed, 31 insertions, 2 deletions

diff --git a/regress/usr.bin/mandoc/char/Makefile b/regress/usr.bin/mandoc/char/Makefile
index bffdc8d2a1b..20ec64a8756 100644
--- a/regress/usr.bin/mandoc/char/Makefile
+++ b/regress/usr.bin/mandoc/char/Makefile
@@ -1,6 +1,6 @@
-# $OpenBSD: Makefile,v 1.1 2009/12/23 23:40:58 schwarze Exp $
+# $OpenBSD: Makefile,v 1.2 2011/01/30 16:05:29 schwarze Exp $
 
-SUBDIR+= space
+SUBDIR+= space N
 
 groff groff-clean: _SUBDIRUSE
 
diff --git a/regress/usr.bin/mandoc/char/N/Makefile b/regress/usr.bin/mandoc/char/N/Makefile
new file mode 100644
index 00000000000..81ff3c399bd
--- /dev/null
+++ b/regress/usr.bin/mandoc/char/N/Makefile
@@ -0,0 +1,6 @@
+# $OpenBSD: Makefile,v 1.1 2011/01/30 16:05:29 schwarze Exp $
+
+REGRESS_TARGETS=basic
+GROFF_TARGETS=basic
+
+.include <bsd.regress.mk>
diff --git a/regress/usr.bin/mandoc/char/N/basic.in b/regress/usr.bin/mandoc/char/N/basic.in
new file mode 100644
index 00000000000..1d7aa4b11fd
--- /dev/null
+++ b/regress/usr.bin/mandoc/char/N/basic.in
@@ -0,0 +1,23 @@
+.TH N-BASIC 1 "January 29, 2011"
+.SH NAME
+N-basic \- basic handling of character number escapes
+.SH DESCRIPTION
+basic usage: x\N'65'x
+.br
+too large: x\N'259'x
+.br
+much too large: x\N'2259'x
+.br
+null: x\N'0'x
+.br
+non-numerical content: x\N'XX'x
+.br
+mixed content: x\N'65XX'x
+.br
+empty: x\N''x
+.br
+no quoting: x\N65x
+.br
+non-matching quoting characters: x\NX65Yx
+.br
+end of test document
diff --git a/regress/usr.bin/mandoc/char/N/basic.out_ascii b/regress/usr.bin/mandoc/char/N/basic.out_ascii
new file mode 100644
index 00000000000..c4a07a8abe1
--- /dev/null
+++ b/regress/usr.bin/mandoc/char/N/basic.out_ascii