[Bug libc/12747] New: RFE: New time zone conversion specifier character

["myllynen at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=12747

           Summary: RFE: New time zone conversion specifier character
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper.fsp@gmail.com
        ReportedBy: myllynen@redhat.com


Some countries [1] have recommendations that time zone should be presented for
example as UTC+2 or UTC-3. This is also the format lots of web sites are using
today (although some of them use GMT instead of UTC).

Would it be possible to add a conversion specifier character which would emit
just the offset in hours without leading/trailing zeroes when possible? In case
of half hours a flag to indicate the hour separator would be used.

For example, if the conversion specifier character would be %f then one would
get with "%f"

-7

in a time zone being UTC-7 and with "%.f" one would get

+5.30

in a time zone UTC+5:30. This would be easier to read than what is available
now with %z. In some applications the space for time zone is very limited so
this compact format would also help there (think of UTC+0200 vs UTC+2).

1) Finland is one example of such a recommendation, for reference see

http://kotoistus.fi/suositukset/vahv_kalenterit_cldr1_4.htm#Kellonajat

Thanks.

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