===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/mandoc.1,v
retrieving revision 1.182
retrieving revision 1.183
diff -u -r1.182 -r1.183
--- src/usr.bin/mandoc/mandoc.1	2022/02/18 10:24:32	1.182
+++ src/usr.bin/mandoc/mandoc.1	2022/04/24 13:34:53	1.183
@@ -1,6 +1,6 @@
-.\" $OpenBSD: mandoc.1,v 1.182 2022/02/18 10:24:32 jsg Exp $
+.\" $OpenBSD: mandoc.1,v 1.183 2022/04/24 13:34:53 schwarze Exp $
 .\"
-.\" Copyright (c) 2012, 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
+.\" Copyright (c) 2012, 2014-2022 Ingo Schwarze <schwarze@openbsd.org>
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
@@ -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: February 18 2022 $
+.Dd $Mdocdate: April 24 2022 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
@@ -2082,6 +2082,13 @@
 .Pq roff
 The argument of the escape sequence \e$ is not a digit;
 the escape sequence expands to the empty string.
+.It Sy "negative argument, using 0"
+.Pq roff
+A
+.Ic \&shift
+request has a negative argument
+or an argument that is negative due to integer overflow.
+Macro argument numbering remains unchanged.
 .It Sy "NOT IMPLEMENTED: Bd -file"
 .Pq mdoc
 For security reasons, the