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From: | Paul Eggert |
Subject: | Re: [PATCH] Make display-time-mode time zone configurable |
Date: | Fri, 19 Feb 2016 10:02:46 -0800 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 |
On 02/19/2016 09:14 AM, Mark Oteiza wrote:
My first thought of a use-case is simply keeping time zone in the mode line the same regardless of what the system time (or local time) may be, akin to not changing one's watch when travelling.
That's easily done with (setenv "TZ" "America/Los_Angeles"), or whatever you want the mode-line's time zone to be.
Alternatively, similar to standardizing on one a particular time zone in time-stamp.el, it may also be desirable in a privacy sense to standardize the rest of Emacs' time displays (e.g. time stamps in email or other network connections) to another time zone but still keep the "wall clock" (meaning display-time-mode) as local time.
If there's a need to use publish some other time zone for privacy reasons, then it would make sense to add a configuration variable for one's "public time zone", which Emacs uses for email and other uses intended to be public, while continuing to use the current TZ-based approach for the actual time zone. Alternatively, Emacs could add a configuration variable for one's "private time zone", which would be used for mode lines and for other private things, while continuing to use TZ for the time zone announced for public uses. The former of these two alternatives sounds more plausible to me, as users expect TZ to be the "true" time zone.
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