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bug#641: format-time-string %Z does not work, starting with Emacs 22.2


From: martin rudalics
Subject: bug#641: format-time-string %Z does not work, starting with Emacs 22.2
Date: Tue, 05 Aug 2008 08:28:18 +0200
User-agent: Mozilla Thunderbird 1.0 (Windows/20041206)

>>        * s/ms-w32.h: Don't define HAVE_TZNAME.
[...]
> Sorry; I don't know what all of that means.

Jason did undefine HAVE_TZNAME on Windows in order to fix a bug with
`current-time-zone'.  As a consequence, the following code in strftime.c

#if HAVE_TZNAME
          /* The tzset() call might have changed the value.  */
          if (!(zone && *zone) && tp->tm_isdst >= 0)
            zone = tzname[tp->tm_isdst];
#endif
          if (! zone)
            zone = "";

will produce an empty zone string on Windows.

I suppose we need different strategies for handling `current-time-zone'
and `format-time-string' on Windows.

martin







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