URL: <https://savannah.gnu.org/bugs/?65955>
Summary: [troff] enable "input" warning category by default
and add one-off alert
Group: GNU roff
Submitter: gbranden
Submitted: Fri 05 Jul 2024 08:15:02 AM UTC
Category: Core
Severity: 1 - Wish
Item Group: Warning/Suspicious behaviour
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Planned Release: None
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Follow-up Comments:
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Date: Fri 05 Jul 2024 08:15:02 AM UTC By: G. Branden Robinson <gbranden>
As I noted in a
[https://lists.gnu.org/archive/html/groff/2024-07/msg00011.html response to
Colin Watson on the list]:
2a. Drop cp1047.tmac, de-document it, and NEWS its withdrawal.
See:
https://lists.gnu.org/archive/html/groff/2023-03/msg00113.html
https://lists.gnu.org/archive/html/groff/2023-04/msg00000.html
https://lists.gnu.org/archive/html/groff/2024-05/msg00028.html
2b. [troff] emit special diagnostic on first occurrence of input
character code > 127
This would tell people that EBCDIC support is gone, that they
need to load one of the specialized macro files for character
encoding support, and that those will be going away too in groff
1.25 in favor of support for UTF-8 input, so they need to look into
preconv(1).
In my opinion we need something like this since the semantics of
input code points > 127 will change from groff 1.23 to 1.25.
People/distributors skipping over 1.24 won't get warning,
unfortunately.
Unless they do something crazy like read the release notes.
Item 2a is already filed as bug #65724.
The idea here is that the one-off alert would explain to users why giving GNU
_troff_ ISO 8859-x or KOI8-R input produces (probably) a lot of warnings about
invalid character codes. The individual warnings would help them to clean
their input document of those codes.
It's important to bring _preconv_(1) to people's attention.
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