TemporalTimeZoneIdentifier and TimeZoneIANAName exclude some valid IANA time zone names #1993
Assignees
Labels
needs plenary input
Needs to be presented to the committee and feedback incorporated
spec-text
Specification text involved
Milestone
Comments
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
The IANA time zone database includes zones "Etc/GMT+0" through "Etc/GMT+12", but these are not matched by the TimeZoneIANAName production (and therefore not by the TemporalTimeZoneIdentifier production either) because "+" is not matched by TZChar (while the sibling zones "Etc/GMT-0" through "Etc/GMT-14" are matched because "-" is matched by TZChar). TimeZoneBracketedName specifically expands to Etc/GMT ASCIISign Hour, but even that doesn't really work because Hour only matches two-digit sequences 00 through 23 (resulting in incorrect acceptance of "Etc/GMT+00" through "Etc/GMT+09" and incorrect rejection of "Etc/GMT+0" through "Etc/GMT+9").
I think the special TimeZoneBracketedName expansion should be moved to TimeZoneIANAName and fixed to something like Etc/GMT ASCIISign Hour[+Unpadded] or Etc/GMT ASCIISign UnpaddedHour.
The text was updated successfully, but these errors were encountered: