From 725d0df90de0e8b7b94e7f91cfb81713ebed326a Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Mon, 14 Jun 2021 00:04:02 -0700 Subject: [PROPOSED] New guideline against further merging * theory.html (Timezone identifiers): Guide against further merging of timezones merely because they agree since 1970. * NEWS: Mention this. --- NEWS | 3 +++ theory.html | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/NEWS b/NEWS index 53890a7..47bc632 100644 --- a/NEWS +++ b/NEWS @@ -50,6 +50,9 @@ Unreleased, experimental changes Changes to maintenance procedure + Add a guideline against further timezone merges, so that the + merges in this release are the last such merges. + The new file SECURITY covers how to report security-related bugs. Several backward-compatibility links have been moved to the diff --git a/theory.html b/theory.html index 5a05f4b..9498d0b 100644 --- a/theory.html +++ b/theory.html @@ -224,6 +224,11 @@ in decreasing order of importance: even if some of the clocks disagreed before 1970. Otherwise these tables would become annoyingly large. +
  • + Do not merge already-existing timezones merely because their + clocks have agreed since 1970. This helps avoid data churn for + timezones created before the preceding guideline was in place. +
  • If boundaries between regions are fluid, such as during a war or insurrection, do not bother to create a new timezone merely -- 2.30.2