[bug #64209] [mm] ".LO SJ" doesn't put a blank line after a letter's subject

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?64209>

                 Summary: [mm] ".LO SJ" doesn't put a blank line after a
letter's subject
                   Group: GNU roff
               Submitter: gbranden
               Submitted: Wed 17 May 2023 12:18:56 PM UTC
                Category: Macro mm
                Severity: 2 - Minor
              Item Group: Rendering/Cosmetics
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Wed 17 May 2023 12:18:56 PM UTC By: G. Branden Robinson <gbranden>
There are some minor differences between how DWB 3.3 mm and groff mm format
letters (see the `LT` macro), particularly when `LO` letter options are used.

1.  DWB mm puts two spaces after colons in the notations generated by `.LO
RN`, `.LO AT`, and `.LO SJ`.  groff mm puts only one.  I don't see this as a
problem.  groff's approach is more flexible, permitting the user to put in
extra (non-breaking?) spaces themselves if they desire rather than negative
horizontal motion escape sequences if they don't.

2. DWB mm puts two blank lines above the formal closing, where groff mm puts
only one.  I don't think this is a problem either, for analogous reasons to
the preceding item.

3. DWB puts a blank line after the subject and before the body of the letter
(typically a paragraph macro).  groff mm doesn't--this is ugly.  Fix it.

(I checked Heirloom Doctools troff mm too.  It appears to be broken.)







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