[groff] 11/31: groff_man_style(7): Document portability of `\:`.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 4dc92d1ad89801a18cd7b6b03bd98a7a6351e690
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Sat Aug 13 12:30:30 2022 -0500

    groff_man_style(7): Document portability of `\:`.
    
    Lift information from comments to formatted text.
    
    None of the AT&T device-independent troff descendants except for
    Heirloom appear to support it; see their `getch()` function definitions
    in "n1.c".
---
 tmac/groff_man.7.man.in | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/tmac/groff_man.7.man.in b/tmac/groff_man.7.man.in
index 30bf71df6..a0057b683 100644
--- a/tmac/groff_man.7.man.in
+++ b/tmac/groff_man.7.man.in
@@ -2368,10 +2368,6 @@ are still honored.
 .
 .TP
 .B \e:
-.\" Heirloom Doctools troff since release 050915 (2005-09-15)
-.\" mandoc since 2018-12-15 (released in 1.14.5, 2019-03-10)
-.\" neatroff since 399a4936, 2014-02-17
-.\" Plan 9 troff does not appear to support it.
 Insert a non-printing break point.
 .
 A word can break at such a point,
@@ -2390,6 +2386,25 @@ hyphenation only after certain explicit hyphens within a 
word.
 See subsection \[lq]Hyperlink macros\[rq] above for an example.
 .
 .
+.IP
+This escape sequence is a
+.I groff
+extension also supported by Heirloom Doctools
+.I troff \" Heirloom
+050915 (September 2005),
+.I mandoc
+1.14.5 (2019-03-10),
+and
+.I neatroff
+(commit 399a4936,
+2014-02-17),
+but not by Plan\~9,
+Solaris,
+or Documenter's Workbench
+.IR troff s. \" Plan 9, Solaris, DWB
+.\" as of this writing, 2022-08-13
+.
+.
 .TP
 .B \e\(ti
 Adjustable non-breaking space.