[bug #60422] [ms]: FAM applies too broadly

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?60422>

                 Summary: [ms]: FAM applies too broadly
                 Project: GNU troff
            Submitted by: gbranden
            Submitted on: Tue 20 Apr 2021 06:09:38 AM UTC
                Category: Macro - ms
                Severity: 3 - Normal
              Item Group: Incorrect behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

Changing the FAM string applies too broadly after document initializing.  I
noticed this in Deri's new document msboxes.ms.  He used ".ds FAM C" to change
the font family before a code example long enough that it spanned a page
break.  This seems perfectly in keeping with the string's intention and our
advice in ms.ms.

However it also changed the font used in footnotes and titles
(headers/footers).

That seems wrong.

I'm attaching a small reproducer in source and rendered form.

Without having dug into the package internals yet, I would say that:

1. ms should use environments for footnotes and titles.
2. FAM strings for footnotes and titles should be exposed, perhaps FAMFN and
FAMHF, or perhaps, I'm inclined to think, package-internal strings since few
document authors will desire the effect described above.
3. ms initialization should copy FAMFN and FAMHF from FAM.
4. FAMFN and FAMHF should be used to determine the font family in the footnote
and title environments, respectively.
5. A paragraph reset should change _only_ FAM.

Thoughts?



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File Attachments:


-------------------------------------------------------
Date: Tue 20 Apr 2021 06:09:38 AM UTC  Name: famfoolery.ms  Size: 473B   By:
gbranden

<http://savannah.gnu.org/bugs/download.php?file_id=51295>
-------------------------------------------------------
Date: Tue 20 Apr 2021 06:09:38 AM UTC  Name: famfoolery.ps  Size: 7KiB   By:
gbranden

<http://savannah.gnu.org/bugs/download.php?file_id=51296>

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