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-rw-r--r--mdoc.751
1 files changed, 48 insertions, 3 deletions
diff --git a/mdoc.7 b/mdoc.7
index deca4ba8..d0dad480 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -1,7 +1,7 @@
-.\" $Id: mdoc.7,v 1.279 2019/07/15 19:20:30 schwarze Exp $
+.\" $Id: mdoc.7,v 1.280 2020/01/19 18:02:00 schwarze Exp $
.\"
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
-.\" Copyright (c) 2010, 2011, 2013-2018 Ingo Schwarze <schwarze@openbsd.org>
+.\" Copyright (c) 2010, 2011, 2013-2020 Ingo Schwarze <schwarze@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
@@ -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: July 15 2019 $
+.Dd $Mdocdate: January 19 2020 $
.Dt MDOC 7
.Os
.Sh NAME
@@ -449,6 +449,7 @@ in the alphabetical
.It Ic \&Ss Ta subsection header (one line)
.It Ic \&Sx Ta internal cross reference to a section or subsection
.It Ic \&Xr Ta cross reference to another manual page: Ar name section
+.It Ic \&Tg Ta tag the definition of a Ar term Pq <= 1 arguments
.It Ic \&Pp Ta start a text paragraph (no arguments)
.El
.Ss Displays and lists
@@ -2548,6 +2549,49 @@ Table cell separator in
.Ic \&Bl Fl column
lists; can only be used below
.Ic \&It .
+.It Ic \&Tg Op Ar term
+Announce that the next input line starts a definition of the
+.Ar term .
+This macro must appear alone on its own input line.
+The argument defaults to the first argument of the first macro
+on the next line.
+The argument may not contain whitespace characters, not even when it is quoted.
+This macro is a
+.Xr mandoc 1
+extension and is typically ignored by other formatters.
+.Pp
+When viewing terminal output with
+.Xr less 1 ,
+the interactive
+.Ic :t
+command can be used to go to the definition of the
+.Ar term
+as described for the
+.Ev MANPAGER
+variable in
+.Xr man 1 ;
+when producing HTML output, a fragment identifier
+.Pq Ic id No attribute
+is generated, to be used for deep linking to this place of the document.
+.Pp
+In most cases, adding a
+.Ic \&Tg
+macro would be redundant because
+.Xr mandoc 1
+is able to automatically tag most definitions.
+This macro is intended for cases where automatic tagging of a
+.Ar term
+is unsatisfactory, for example if a definition is not tagged
+automatically (false negative) or if places are tagged that do
+not define the
+.Ar term
+(false positives).
+When there is at least one
+.Ic \&Tg
+macro for a
+.Ar term ,
+no other places are automatically marked as definitions of that
+.Ar term .
.It Ic \&Tn Ar word ...
Supported only for compatibility, do not use this in new manuals.
Even though the macro name
@@ -2912,6 +2956,7 @@ then the macro accepts an arbitrary number of arguments.
.It Ic \&St Ta \&No Ta Yes Ta 1
.It Ic \&Sx Ta Yes Ta Yes Ta >0
.It Ic \&Sy Ta Yes Ta Yes Ta >0
+.It Ic \&Tg Ta \&No Ta \&No Ta <2
.It Ic \&Tn Ta Yes Ta Yes Ta >0
.It Ic \&Ud Ta \&No Ta \&No Ta 0
.It Ic \&Ux Ta Yes Ta Yes Ta n