Basic implementation of the roff(7) .ti (temporary indent) request.

Needed by about four dozen ports (thanks to naddy@ for the research).

6 files changed, 83 insertions, 1 deletions

diff --git a/regress/roff/Makefile b/regress/roff/Makefile
index c97b99b1..0a464197 100644
--- a/regress/roff/Makefile
+++ b/regress/roff/Makefile
@@ -1,7 +1,7 @@
 # $OpenBSD: Makefile,v 1.20 2015/02/06 16:05:51 schwarze Exp $
 
 SUBDIR  = args cond esc scale string
-SUBDIR += br cc de ds ft ig it ll na nr ps rm sp ta tr
+SUBDIR += br cc de ds ft ig it ll na nr ps rm sp ta ti tr
 
 .include "../Makefile.sub"
 .include <bsd.subdir.mk>
diff --git a/regress/roff/ti/Makefile b/regress/roff/ti/Makefile
new file mode 100644
index 00000000..4ac4cde0
--- /dev/null
+++ b/regress/roff/ti/Makefile
@@ -0,0 +1,5 @@
+# $OpenBSD: Makefile,v 1.1 2017/05/07 17:30:58 schwarze Exp $
+
+REGRESS_TARGETS	= basic-mdoc basic-man
+
+.include <bsd.regress.mk>
diff --git a/regress/roff/ti/basic-man.in b/regress/roff/ti/basic-man.in
new file mode 100644
index 00000000..deb1542f
--- /dev/null
+++ b/regress/roff/ti/basic-man.in
@@ -0,0 +1,18 @@
+.TH TI-BASIC-MAN 1 "May 8, 2014" OpenBSD
+.SH NAME
+ti-basic-man \- temporary indentation in man(7)
+.SH DESCRIPTION
+initial text
+.ti 10n
+This text is indented.
+However, the indent is temporary,
+so as soon as the line wraps, it is gone.
+.ti +10n
+The temporary indent can be relative.
+All the same, it will expire in the usual way.
+.ti -3n
+It is also possible to temporarily reduce the indentation,
+but that will also last until the next line break only.
+.ti -10n
+Reducing by more than the current offset
+starts the next line at the physical left margin.
diff --git a/regress/roff/ti/basic-man.out_ascii b/regress/roff/ti/basic-man.out_ascii
new file mode 100644
index 00000000..acc53f45
--- /dev/null
+++ b/regress/roff/ti/basic-man.out_ascii
@@ -0,0 +1,21 @@
+TI-BASIC-MAN(1)             General Commands Manual            TI-BASIC-MAN(1)
+
+
+
+NNAAMMEE
+       ti-basic-man - temporary indentation in man(7)
+
+DDEESSCCRRIIPPTTIIOONN
+       initial text
+          This text is indented.  However, the indent is temporary, so as soon
+       as the line wraps, it is gone.
+                 The temporary indent can be relative.  All the same, it will
+       expire in the usual way.
+    It is also possible to temporarily reduce the indentation, but that will
+       also last until the next line break only.
+Reducing by more than the current offset starts the next line at the physical
+       left margin.
+
+
+
+OpenBSD                           May 8, 2014                  TI-BASIC-MAN(1)
diff --git a/regress/roff/ti/basic-mdoc.in b/regress/roff/ti/basic-mdoc.in
new file mode 100644
index 00000000..0b165bc1
--- /dev/null
+++ b/regress/roff/ti/basic-mdoc.in
@@ -0,0 +1,21 @@
+.Dd May 8, 2017
+.Dt TI-BASIC-MDOC 1
+.Os OpenBSD
+.Sh NAME
+.Nm ti-basic-mdoc
+.Nd temporary indent in mdoc(7)
+.Sh DESCRIPTION
+initial text
+.ti 10n
+This text is indented.
+However, the indent is temporary,
+so as soon as the line wraps, it is gone.
+.ti +10n
+The temporary indent can be relative.
+All the same, it will expire in the usual way.
+.ti -3n
+It is also possible to temporarily reduce the indentation,
+but that will also last until the next line break only.
+.ti -10n
+Reducing by more than the current offset
+starts the next line at the physical left margin.
diff --git a/regress/roff/ti/basic-mdoc.out_ascii b/regress/roff/ti/basic-mdoc.out_ascii
new file mode 100644
index 00000000..a115b02d
--- /dev/null
+++ b/regress/roff/ti/basic-mdoc.out_ascii
@@ -0,0 +1,17 @@
+TI-BASIC-MDOC(1)            General Commands Manual           TI-BASIC-MDOC(1)
+
+NNAAMMEE
+     ttii--bbaassiicc--mmddoocc - temporary indent in mdoc(7)
+
+DDEESSCCRRIIPPTTIIOONN
+     initial text
+          This text is indented.  However, the indent is temporary, so as soon
+     as the line wraps, it is gone.
+               The temporary indent can be relative.  All the same, it will
+     expire in the usual way.
+  It is also possible to temporarily reduce the indentation, but that will
+     also last until the next line break only.
+Reducing by more than the current offset starts the next line at the physical
+     left margin.
+
+OpenBSD                           May 8, 2017                          OpenBSD