Tedu support for the -xsh4.2 argument to the mdoc(7) .St macro

because all of the following hold:
* It is an alias for a part of an ancient standard that is no longer important.
* To refer to that old standard, -xpg4.2 is readily available and portable.
* It is unused in OpenBSD, FreeBSD, and NetBSD.
* Groff never supported it.

I agreed with G. Branden Robinson that deleting this from mandoc
is preferable to adding it to groff.

diff --git a/mdoc.7 b/mdoc.7
index 442f30337fe4616188db54a461ee8b21640d74d2..07ee9aecea821b52be99a5e86a3045804109c670 100644 (file)
--- a/mdoc.7
+++ b/mdoc.7
@@ -1,4 +1,4 @@
-.\"    $Id: mdoc.7,v 1.288 2021/12/06 16:26:08 schwarze Exp $
+.\" $Id: mdoc.7,v 1.289 2022/01/13 08:42:15 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2010, 2011, 2013-2020 Ingo Schwarze <schwarze@openbsd.org>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: December 6 2021 $
+.Dd $Mdocdate: January 13 2022 $
 .Dt MDOC 7
 .Os
 .Sh NAME
@@ -2486,10 +2486,7 @@ Based on POSIX.1 and POSIX.2, published in 1992.
 .br
 This standard was published in 1994.
 It was used as the basis for UNIX 95 certification.
-The following three refer to parts of it.
-.Pp
-.It \-xsh4.2
-.St -xsh4.2
+The following two refer to parts of it.
 .Pp
 .It \-xcurses4.2
 .St -xcurses4.2

diff --git a/st.c b/st.c
index c4d86e33feb06239c9927acc8a45bf4c871113d7..1d198bac75c788675c9f8ca85db2f13b17952d0e 100644 (file)
--- a/st.c
+++ b/st.c
@@ -1,4 +1,4 @@
-/*     $Id: st.c,v 1.16 2018/12/14 01:18:26 schwarze Exp $ */
+/* $Id: st.c,v 1.17 2022/01/13 08:42:15 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -67,7 +67,6 @@ LINE("-xpg4",         "X/Open Portability Guide Issue\\~4 (\\(lqXPG4\\(rq)")
 LINE("-xpg4.2",                "X/Open Portability Guide Issue\\~4, Version\\~2 (\\(lqXPG4.2\\(rq)")
 LINE("-xbd5",          "X/Open Base Definitions Issue\\~5 (\\(lqXBD5\\(rq)")
 LINE("-xcu5",          "X/Open Commands and Utilities Issue\\~5 (\\(lqXCU5\\(rq)")
-LINE("-xsh4.2",                "X/Open System Interfaces and Headers Issue\\~4, Version\\~2 (\\(lqXSH4.2\\(rq)")
 LINE("-xsh5",          "X/Open System Interfaces and Headers Issue\\~5 (\\(lqXSH5\\(rq)")
 LINE("-xns5",          "X/Open Networking Services Issue\\~5 (\\(lqXNS5\\(rq)")
 LINE("-xns5.2",                "X/Open Networking Services Issue\\~5.2 (\\(lqXNS5.2\\(rq)")