In message <9608192125.AA20430@elsie.nci.nih.gov>, Arthur David Olson writes:

The file ftp://elsie.nci.nih.gov/pub/c-common.c is now available; this is a replacement for c-common.c in gcc (either 2.7.2 or 2.7.2.1) that does strftime format checking

and Ulrich Drepper pointed out "we have version 2.0 near to a date of release and the strftime function was changed." Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de> comments in his web page on ISO 8601 (http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html) as follows: [Unfortunately, the current version of the C programming language standard provides in the strftime() function no means to generate the ISO 8601 week notation. A required extension would be four new formatting codes: for the year of the week to which the specified day belongs (both 2-digit and 4-digit), for the number of the week between 01 and 53, and for the day of the week between 1 (Monday) and 7 (Sunday). ... Does c-common.c and/or the strftime in version 2.0 of glibc address these points? - Jim Van Zandt

Date: Mon, 19 Aug 1996 21:58:22 -0400 From: Jim Van Zandt <jrv@vanzandt.mv.com> Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de> comments: Unfortunately, the current version of the C programming language standard provides in the strftime() function no means to generate the ISO 8601 week notation.... Does c-common.c and/or the strftime in version 2.0 of glibc address these points? Recent betas of the glibc strftime have support for the following formats, with the same meaning as the tz strftime.c: %G ISO 8601 4-digit year %g ISO 8601 2-digit year %V ISO 8601 2-digit week %u ISO 8601 1-digit weekday The next public glibc release should have this. The tz patch for c-common.c (understandably) hasn't caught up with this yet.