[bug #61854] TE macro implementations should check TW register

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?61854>

                 Summary: TE macro implementations should check TW register
                 Project: GNU troff
            Submitted by: gbranden
            Submitted on: Wed 19 Jan 2022 10:41:13 AM UTC
                Category: Macro - others/general
                Severity: 1 - Wish
              Item Group: Feature change
                  Status: In Progress
                 Privacy: Public
             Assigned to: gbranden
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

The `TW` register has been part of the tbl(1) spec for the best
part of 50 years.

Macro packages' `TE` macros could test this register's value
against the line length and warn if a table is too wide.

I propose to do this.

(For man(7), I'll guard this behind the `CHECKSTYLE` register.)





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