The .AT, .DT, and .UC macros are allowed inside next-line scope

and never produce output at the place of their invocation.

Minibugs found while investigating unrelated afl(1) reports from tb@.

10 files changed, 98 insertions, 2 deletions

diff --git a/regress/man/AT/Makefile b/regress/man/AT/Makefile
new file mode 100644
index 00000000..44cf0519
--- /dev/null
+++ b/regress/man/AT/Makefile
@@ -0,0 +1,5 @@
+# $OpenBSD: Makefile,v 1.1 2022/04/27 17:04:15 schwarze Exp $
+
+REGRESS_TARGETS	 = basic
+
+.include <bsd.regress.mk>
diff --git a/regress/man/AT/basic.in b/regress/man/AT/basic.in
new file mode 100644
index 00000000..35eb2375
--- /dev/null
+++ b/regress/man/AT/basic.in
@@ -0,0 +1,10 @@
+.\" $OpenBSD: basic.in,v 1.1 2022/04/27 17:04:15 schwarze Exp $
+.TH AT-BASIC 1 "April 27, 2022"
+.SH NAME
+AT-basic \- the AT&T footer macro
+.SH DESCRIPTION
+initial text
+.B
+.AT
+bold text
+final text
diff --git a/regress/man/AT/basic.out_ascii b/regress/man/AT/basic.out_ascii
new file mode 100644
index 00000000..962c9f88
--- /dev/null
+++ b/regress/man/AT/basic.out_ascii
@@ -0,0 +1,9 @@
+AT-BASIC(1)                 General Commands Manual                AT-BASIC(1)
+
+NNAAMMEE
+       AT-basic - the AT&T footer macro
+
+DDEESSCCRRIIPPTTIIOONN
+       initial text bboolldd tteexxtt final text
+
+7th Edition                     April 27, 2022                     AT-BASIC(1)
diff --git a/regress/man/DT/Makefile b/regress/man/DT/Makefile
new file mode 100644
index 00000000..44cf0519
--- /dev/null
+++ b/regress/man/DT/Makefile
@@ -0,0 +1,5 @@
+# $OpenBSD: Makefile,v 1.1 2022/04/27 17:04:15 schwarze Exp $
+
+REGRESS_TARGETS	 = basic
+
+.include <bsd.regress.mk>
diff --git a/regress/man/DT/basic.in b/regress/man/DT/basic.in
new file mode 100644
index 00000000..8902e594
--- /dev/null
+++ b/regress/man/DT/basic.in
@@ -0,0 +1,22 @@
+.\" $OpenBSD: basic.in,v 1.1 2022/04/27 17:04:15 schwarze Exp $
+.TH DT-BASIC 1 "April 27, 2022"
+.SH NAME
+DT-basic \- restore the default tabulator positions
+.SH DESCRIPTION
+.nf
+Default tabs are every five columns:
+1234 1234 1234 1234 1234
+one	two	three	four
+.PP
+Custom tabs: column 6, then every 8 columns:
+12345 1234567 1234567 1234567
+.ta 6n T 8n
+one	two	three	four
+.PP
+.B
+.DT
+bold text
+.PP
+Back to the default:
+1234 1234 1234 1234 1234
+one	two	three	four
diff --git a/regress/man/DT/basic.out_ascii b/regress/man/DT/basic.out_ascii
new file mode 100644
index 00000000..8ccbc685
--- /dev/null
+++ b/regress/man/DT/basic.out_ascii
@@ -0,0 +1,21 @@
+DT-BASIC(1)                 General Commands Manual                DT-BASIC(1)
+
+NNAAMMEE
+       DT-basic - restore the default tabulator positions
+
+DDEESSCCRRIIPPTTIIOONN
+       Default tabs are every five columns:
+       1234 1234 1234 1234 1234
+       one  two  three     four
+
+       Custom tabs: column 6, then every 8 columns:
+       12345 1234567 1234567 1234567
+       one   two     three   four
+
+       bboolldd tteexxtt
+
+       Back to the default:
+       1234 1234 1234 1234 1234
+       one  two  three     four
+
+OpenBSD                         April 27, 2022                     DT-BASIC(1)
diff --git a/regress/man/Makefile b/regress/man/Makefile
index 23d6e04b..17a939b2 100644
--- a/regress/man/Makefile
+++ b/regress/man/Makefile
@@ -1,6 +1,6 @@
-# $OpenBSD: Makefile,v 1.19 2019/01/05 21:13:55 schwarze Exp $
+# $OpenBSD: Makefile,v 1.20 2022/04/27 17:04:15 schwarze Exp $
 
-SUBDIR = B BI EX HP IP MT OP PD PP RS SH SS SY TH TP TS UR nf blank
+SUBDIR = AT B BI DT EX HP IP MT OP PD PP RS SH SS SY TH TP TS UC UR nf blank
 
 .include "../Makefile.sub"
 .include <bsd.subdir.mk>
diff --git a/regress/man/UC/Makefile b/regress/man/UC/Makefile
new file mode 100644
index 00000000..44cf0519
--- /dev/null
+++ b/regress/man/UC/Makefile
@@ -0,0 +1,5 @@
+# $OpenBSD: Makefile,v 1.1 2022/04/27 17:04:15 schwarze Exp $
+
+REGRESS_TARGETS	 = basic
+
+.include <bsd.regress.mk>
diff --git a/regress/man/UC/basic.in b/regress/man/UC/basic.in
new file mode 100644
index 00000000..f6f71be0
--- /dev/null
+++ b/regress/man/UC/basic.in
@@ -0,0 +1,10 @@
+.\" $OpenBSD: basic.in,v 1.1 2022/04/27 17:04:15 schwarze Exp $
+.TH UC-BASIC 1 "April 27, 2022"
+.SH NAME
+UC-basic \- the University of California footer macro
+.SH DESCRIPTION
+initial text
+.B
+.UC
+bold text
+final text
diff --git a/regress/man/UC/basic.out_ascii b/regress/man/UC/basic.out_ascii
new file mode 100644
index 00000000..fa29e19d
--- /dev/null
+++ b/regress/man/UC/basic.out_ascii
@@ -0,0 +1,9 @@
+UC-BASIC(1)                 General Commands Manual                UC-BASIC(1)
+
+NNAAMMEE
+       UC-basic - the University of California footer macro
+
+DDEESSCCRRIIPPTTIIOONN
+       initial text bboolldd tteexxtt final text
+
+3rd Berkeley Distribution       April 27, 2022                     UC-BASIC(1)