On Thu, Jun 5, 2014 at 3:04 AM, J. Leslie Turriff <jlturr...@centurylink.net> wrote: > What I find interesting is that (with the possible exception of Ada) > I don't > think that any of the commonly used languages allow for the use of Unicode > characters for non- user-defined tokens (i.e. reserved words, etc.).
There is one non-ASCII character in the library, for Pi, and that caused some fuss, along with some eye-rolling, as writing the Unicode characters as ["03C0"] is permitted. Ada is a conservative language, and there's no real drive to make changes like these. (I was mistaken on the 20 years for Unicode identifiers; it was the Ada 2005 standard that permitted it, not Ada 95.) Scala is not really a commonly used language, but does use some Unicode arrows: ⇒ for =>, ←for <- and → for ->. Most people don't bother. ALGOL 60 and ALGOL 68 used non-ASCII characters like ×, ÷, ≤, ≥, ≠, ¬, ∨, ∧, ⊂, ≡, ␣ and ⏨, and had compiler defined spellings for keywords. -- Kie ekzistas vivo, ekzistas espero. _______________________________________________ Unicode mailing list Unicode@unicode.org http://unicode.org/mailman/listinfo/unicode
