[groff] 02/17: [man]: Update annotations of OP's sketchy history.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit 2f61bbf1de4ad6937a1cd9d0410a8180c72fff8f
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Fri Aug 4 09:25:39 2023 -0500

    [man]: Update annotations of OP's sketchy history.
    
    Also scrub a redundant comment.
---
 tmac/an.tmac            | 7 ++++++-
 tmac/groff_man.7.man.in | 5 +++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/tmac/an.tmac b/tmac/an.tmac
index 33e88be62..c7f7d8782 100644
--- a/tmac/an.tmac
+++ b/tmac/an.tmac
@@ -262,7 +262,7 @@
 .  \}
 .
 .  \" The previous document rendered in a batch may have been in a
-.  \" different language.  If this one is in English, (re-)init strings.
+.  \" different language.
 .  if '\\*[locale]'english' .an*localize-strings
 .
 .  ps \\n[PS]u
@@ -990,6 +990,11 @@ contains unsupported escape sequence
 .
 .\" Deprecated: Style an option with an argument (mandatory if
 .\" specified) for a command synopsis.
+.\"
+.\" This is a Documenter's Workbench troff extension.  It is not
+.\" flexible enough to handle GNU-style options like
+.\" `--input=file-name`.  Use font alternation macros instead.
+.\"
 .\" .OP flag [option-parameter]
 .de1 OP
 .  nop \\*[an-deprecation-warn]\\
diff --git a/tmac/groff_man.7.man.in b/tmac/groff_man.7.man.in
index e8e41691b..69489b57d 100644
--- a/tmac/groff_man.7.man.in
+++ b/tmac/groff_man.7.man.in
@@ -3315,6 +3315,11 @@ Later,
 and
 .BR .UR / .UE .
 .\" ...along with implementations of OP, EX, and EE.
+.\"
+.\" It's not clear exactly when `OP` showed up in DWB troff.  It wasn't
+.\" in 1.0 (1984), but was by the time of the 3.3 release (1992).  Scans
+.\" of DWB manuals online suggest that AT&T did not bother to document
+.\" DWB's man(7) implementation in printed matter (nor its ms(7)).
 .
 Plan\~9 from User Space's
 .I troff \" plan9port