[Bug libc/28944] New: strfmon field width is inconsistent with %f formatting

[Bug libc/28944] New: strfmon field width is inconsistent with %f formatting

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28944

            Bug ID: 28944
           Summary: strfmon field width is inconsistent with %f formatting
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: fweimer at redhat dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

strfmon field width currently counts bytes, not characters, unlike printf (bug
28943). This does not seem useful for localization purposes.

POSIX.1-2017 requires counting bytes.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug libc/28944] strfmon field width is inconsistent with %f formatting

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=28944

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=21bb8382b62f7dc20b9936bab32658e8fd5952e0

commit 21bb8382b62f7dc20b9936bab32658e8fd5952e0
Author: Florian Weimer <fweimer@redhat.com>
Date:   Mon May 23 10:08:18 2022 +0200

    stdio-common: Add tst-vfprintf-width-i18n to cover numeric field width

    Related to bug 28943 and bug 28944.

    Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug libc/28944] strfmon field width is inconsistent with %f formatting

[carlos at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28944

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |carlos at redhat dot com

--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #0)
> strfmon field width currently counts bytes, not characters, unlike printf
> (bug 28943). This does not seem useful for localization purposes.
> 
> POSIX.1-2017 requires counting bytes.

If the standard says bytes then I think this should remain at bytes even though
it is less than useful for localization purposes.

In order to make a logical minimum column size the application will need to use
nl_langinfo to determine various parameters, count bytes, and then pass an
adjusted field width in bytes based on the application logic. It would be
easier to pass in a character count, but that is not the case today. The
standard would have to be expanded to have a "character count width" rather
than "width" in this case.

I'm of the opinion that this is likely a CLOSED / WONTFIX, but that this bug
can be used to document the current implementation position on the issue.

Note: Even for %s/%S there is confusion in the standard about "characters
(bytes)" which means the word "character" is often used for the char type
rather than logical characters.

-- 
You are receiving this mail because:
You are on the CC list for the bug.