On 9/15/20 10:18 AM, James Blachly wrote:
On 9/15/20 4:36 AM, Dominikus Dittes Scherkl wrote:
On Tuesday, 15 September 2020 at 06:49:08 UTC, Jon Degenhardt wrote:
On Tuesday, 15 September 2020 at 02:23:31 UTC, Paul Backus wrote:
Identifiers start with a letter, _, or universal alpha, and are
followed by any number of letters, _, digits, or universal alphas.
Universal alphas are as defined in ISO/IEC 9899:1999(E) Appendix D
of the C99 Standard.
I was unable to find the definition of a "universal alpha", or
whether that includes non-ascii alphabetic characters.
ISO/IEC 9899:1999 (E)
Annex D
Universal character names for identifiers
-----------------------------------------
....
-----------------------
This is outdated to the brim. Also it doesn't allow for letter-like
symbols (which is debatable, but especially the mathematical ones like
double-struck letters are intended for such use).
Instead of some old C-Standard, D should better rely directly on the
properties from UnicodeData.txt, which is updated with every new
unicode version.
Thanks to Paul, Jon, Dominikus and H.S. for thoughtful responses.
What will it take (i.e. order of difficulty) to get this fixed -- will
merely a bug report (and PR, not sure if I can tackle or not) do it, or
will this require more in-depth discussion with compiler maintainers?
I'm thinking your issue will not be fixed (just like we don't allow $abc
to be an identifier). But the spec can be fixed to refer to the correct
standards.
-Steve
