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Don't warn about abbreviations like '-05'

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* NEWS, zic.8: Document this.
* zic.c (newabbr): Allow abbreviations that (when quoted) conform
to POSIX.1-2001 or later.
This commit is contained in:
Paul Eggert
2015-07-15 10:51:48 -07:00
parent 2fab66aa16
commit 177f32bb06
3 changed files with 10 additions and 16 deletions
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4
NEWS
View File

@ -19,6 +19,10 @@ Unreleased, experimental changes
installed data files for Europe/Simferopol and Europe/Tallinn.
It does not affect timestamps. (Thanks to Howard Hinnant.)
Changes affecting code
zic no longer warns about valid time zone abbreviations like '-05'.
Release 2015e - 2015-06-13 10:56:02 -0700

2
zic.8
View File

@ -376,6 +376,8 @@ of the time zone abbreviation goes.
Alternately,
a slash (/)
separates standard and daylight abbreviations.
To conform to POSIX, a time zone abbreviation should contain only
alphanumeric ASCII characters, "+" and "\*-".
.TP
.B UNTILYEAR [MONTH [DAY [TIME]]]
The time at which the UT offset or the rule(s) change for a location.

20
zic.c
View File

@ -2893,27 +2893,15 @@ newabbr(const char *const string)
register const char * cp;
const char * mp;
/*
** Want one to ZIC_MAX_ABBR_LEN_WO_WARN alphabetics
** optionally followed by a + or - and a number from 1 to 14.
*/
cp = string;
mp = NULL;
while (is_alpha(*cp))
while (is_alpha(*cp) || ('0' <= *cp && *cp <= '9')
|| *cp == '-' || *cp == '+')
++cp;
if (cp - string == 0)
mp = _("time zone abbreviation lacks alphabetic at start");
if (noise && cp - string < 3)
mp = _("time zone abbreviation has fewer than 3 alphabetics");
mp = _("time zone abbreviation has fewer than 3 characters");
if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN)
mp = _("time zone abbreviation has too many alphabetics");
if (mp == NULL && (*cp == '+' || *cp == '-')) {
++cp;
if (is_digit(*cp))
if (*cp++ == '1' &&
*cp >= '0' && *cp <= '4')
++cp;
}
mp = _("time zone abbreviation has too many characters");
if (*cp != '\0')
mp = _("time zone abbreviation differs from POSIX standard");
if (mp != NULL)