[bug #64091] doc/groff.texi: consider clarifying text about sentence spacing

[Dave]

URL:
  <https://savannah.gnu.org/bugs/?64091>

                 Summary: doc/groff.texi: consider clarifying text about
sentence spacing
                   Group: GNU roff
               Submitter: barx
               Submitted: Sat 22 Apr 2023 02:23:31 PM CDT
                Category: Core
                Severity: 2 - Minor
              Item Group: Documentation
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Sat 22 Apr 2023 02:23:31 PM CDT By: Dave <barx>
Ingo Schwarze posted this nearly a year ago
(http://lists.gnu.org/r/groff/2022-06/msg00030.html) but it garnered no
on-list followup (that I can find) and seems to have gotten lost in the deluge
of posts at the time.

The context is that groff offers numerous types of spaces.  The rest of this
post quotes Ingo at the above-linked message.
----
...the documention is indeed slightly fuzzy regarding this point; "info groff"
tells me:

  5.1.2 Sentences
  ---------------
  [...]
  GNU 'troff' does this by flagging certain characters (normally '!',
  '?', and '.') as potentially ending a sentence.  When GNU 'troff'
  encounters one of these "end-of-sentence characters" at the end of a
  line, or one of them is followed by two spaces on the same input line,
  it appends an inter-word space followed by an inter-sentence space in
  the formatted output.
  [...]

Branden, please consider improving the words "followed by two spaces".

Anything like

  followed by two ordinary space characters ("  ")
  followed by two unescaped space characters ("  ")

might do.

You might also consider saying "at the end of an input line" rather than just
"at the end of a line".







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