%z and argument UNIVERSAL don't play together in format-time-string

[Hannu Koivisto]

Greetings,

Emacs 20.7 from Debian GNU/Linux unstable x86:

(format-time-string "%z")       ; I expect "+0300"
=> "+0300"

(format-time-string "%z" nil t) ; I expect "+0000"
=> "+0300"                      ; Not what I expected!

OTOH:

(format-time-string "%Z")
=> "EEST"

(format-time-string "%Z" nil t)
=> "GMT"

(format-time-string "%Y-%m-%dT%R%z")
=> "2001-07-23T19:15+0300"

(format-time-string "%Y-%m-%dT%R%z" nil t)
=> "2001-07-23T16:15+0300"

I.e. the argument UNIVERSAL has the desired effect on at least %R
and %Z.

-- 
Hannu