On Sunday, 1 June 2014 at 22:26:42 UTC, Vlad Levenfeld wrote:
I was pretty happy to find that I could use mu and sigma when writing statistical routines, but I've found that for more obscure non-ascii characters the support is hit or miss. For example, none of the subscripts are valid characters, but I can use superscript n as well as dot-notation for derivatives. I'm using dmd 2.065. What's the story behind the scenes? Is there a rationale behind the supported/unsupported or is it happenstance? Is there anywhere I can find a list of supported characters?
The allowed characters are those defined as "universal" in ISO/IEC 9899 (the C standard). It's a pretty long list, but almost only "alphas;" I'm actually surprised you got superscripts and some other things to work.
As I understand it, the intention was a) be like C99, and b) allow things like using "stærð" rather than "staerdh." I'm not sure usage like yours was even thought about, although I'd concede that it seems reasonable.
