From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from omta002.cacentral1.a.cloudfilter.net (omta002.cacentral1.a.cloudfilter.net [3.97.99.33]) by sourceware.org (Postfix) with ESMTPS id 071263858C83 for ; Tue, 15 Feb 2022 22:36:02 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 071263858C83 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=SystematicSw.ab.ca Authentication-Results: sourceware.org; spf=none smtp.mailfrom=systematicsw.ab.ca Received: from shw-obgw-4004a.ext.cloudfilter.net ([10.228.9.227]) by cmsmtp with ESMTP id K4eGnLZDwyr5HK6QTnRMAz; Tue, 15 Feb 2022 22:36:01 +0000 Received: from [10.0.0.5] ([184.64.124.72]) by cmsmtp with ESMTP id K6QTnBrmO3exBK6QTn406c; Tue, 15 Feb 2022 22:36:01 +0000 X-Authority-Analysis: v=2.4 cv=d7HmdDvE c=1 sm=1 tr=0 ts=620c2ad1 a=oHm12aVswOWz6TMtn9zYKg==:117 a=oHm12aVswOWz6TMtn9zYKg==:17 a=IkcTkHD0fZMA:10 a=CCpqsmhAAAAA:8 a=NEAV23lmAAAA:8 a=94nOnFI1EgyDtX4ev68A:9 a=QEXdDO2ut3YA:10 a=ul9cdbp4aOFLsgKbc677:22 Message-ID: <004ec8b9-3e1e-969d-bbf9-cc0456ebf993@SystematicSw.ab.ca> Date: Tue, 15 Feb 2022 15:36:01 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.6.0 Reply-To: newlib@sourceware.org Subject: Re: Support non-POSIX TZ strings Content-Language: en-CA To: newlib@sourceware.org References: <758cfb47-ac13-fb88-877e-63a1d4327429@SystematicSw.ab.ca> From: Brian Inglis Organization: Systematic Software In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4xfBxYnTJo7ajkCAZbcUmeRZbXqFOZPUVELoIfDeTdYfftpEEoWvy4GFmoBZcRKxD6qc3OLFJ6k+38ryNfkgD58WlrJCu8JptCPFvaeDp9a7UvdIXQqOLk Yq4QKwMM8fSD+eshs0Cuw27jXYBmxEO5ksyNNLniMJlcBD9MbrMbPLPLDihhCi10PRAhX5j9jsjzUq2ZIlwY1cYT1PFr1+mBynQ= X-Spam-Status: No, score=-1163.7 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: newlib@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Newlib mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Feb 2022 22:36:04 -0000 On 2022-02-14 12:58, jdoubleu wrote: > Thanks for the quick response! > > > [..] but we should start with the actual POSIX spec under TZ > Yes, that is exactly what I meant: Newlib supporting the <> (angle > brackets) syntax. > I didn't know that it was actually part of POSIX spec, since so many > libs actually don't implement it. > > > The BSD or TZcode implementations could probably be adapted [..] > It looks like the TZcode implementation by Paul Eggert uses a different > approach to parsing the strings, than the current implementation in > newlib > (https://sourceware.org/git/?p=newlib-cygwin.git;a=blob;f=newlib/libc/time/tzset_r.c). > I'm not sure, if you want to copy the code over or use changes by e.g. > Earle F. Philhower from > https://github.com/earlephilhower/newlib-xtensa/pull/14. That patch includes the angle bracket quotes < > in the STD and DST abbreviations, but the abbreviations are only contained *within* the quotes, which should *NOT* be included in the abbreviations. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in binary units and prefixes, physical quantities in SI.]