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ID Category Severity Type Date Submitted Last Update
0001904 [1003.1(2024)/Issue8] Base Definitions Comment Clarification Requested 2025-02-03 04:29 2025-02-04 10:36
Reporter mirabilos View Status public  
Assigned To
Priority normal Resolution Open  
Status New  
Name mirabilos
Organization
User Reference
Section 7.3.5
Page Number 154
Line Number 5270
Interp Status ---
Final Accepted Text
Summary 0001904: LC_TIME era start_date (and end_date) possibly mis-specified
Description I played around a bit with getting CE/BCE into era for a locale, and I stumbled over the spec saying “Years prior to AD¹ 1 shall be represented as negative numbers.” here.

① AD = CE

This surprised me, as it’s a clear mismatch with struct tm.tm_year, which uses the proleptic gregorian calendar, and the year preceding 1 is 0, no discontinuity there. And indeed, on glibc, I had to use the following to make it work, so libc implementers also do the “obvious” thing instead of what that little remark in the spec says:

era "+:1:0001//01//01:+*:CE:%-Ey %EC";/
              "+:1:0000//12//31:-*:BCE:%-Ey %EC"
Desired Action Ideally, someone (more than one, probably) should do a survey of what implementations do, and someone could see whether this sentence was deliberately inserted like that, and if there’s no reason to the contrary, change…

> Years prior to AD 1 shall be represented as negative numbers.

… to…

> The year prior to 1 CE shall be represented as 0, preceding years as negative numbers.
Tags No tags attached.
Attached Files

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-  Notes
(0007061)
mirabilos (reporter)
2025-02-03 04:44

(and ignore the - in my example in the two %-Ey uses, that’s a glibc extension to remove the normally-automatic zero padding so the year 1 CE doesn’t become 01 CE; my locale file documents it as extension so the user can remove it if they don’t have it)
(0007063)
geoffclare (manager)
2025-02-04 10:36

Moving from Online Pubs to the Issue 8 project, as this is a problem with the standard itself, not specific to the HTML translation.

- Issue History
Date Modified Username Field Change
2025-02-03 04:29 mirabilos New Issue
2025-02-03 04:29 mirabilos Name => mirabilos
2025-02-03 04:29 mirabilos URL => https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap07.html#tag_07_03_05 [^]
2025-02-03 04:29 mirabilos Section => 7.3.5
2025-02-03 04:44 mirabilos Note Added: 0007061
2025-02-04 10:34 geoffclare Project Online Pubs => 1003.1(2024)/Issue8
2025-02-04 10:36 geoffclare Page Number => 154
2025-02-04 10:36 geoffclare Line Number => 5270
2025-02-04 10:36 geoffclare Interp Status => ---
2025-02-04 10:36 geoffclare Note Added: 0007063


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