David A. Wheeler scripsit:
> * Scheme doesn't define what "-" and "+" followed by other stuff
> mean if they aren't a number. The obvious extension is to consider
> them symbols, and doing so is important for a Scheme shell (it makes
> it easy). One gotcha: "-i" is negative sqrt(-1), but that's also a
> valid flag (in particular, it's grep's case-insensitive flag).
More precisely, R5RS does not. In R6RS, -g is a lexical syntax error,
and in R7RS it's a valid identifier.
> * The latest Scheme now defines |...|. Which is nice, but that means
> that scsh's mappings for | and || probably need tweaking.
Yes, we recognized that | was going to be problematic: it has to be
typed as |\|| now. || is fine, though; it's the result of
`(string->symbol "")`.
--
John Cowan co...@ccil.org
"Mr. Lane, if you ever wish anything that I can do, all you will have
to do will be to send me a telegram asking and it will be done."
"Mr. Hearst, if you ever get a telegram from me asking you to do
anything, you can put the telegram down as a forgery."
------------------------------------------------------------------------------
Try New Relic Now & We'll Send You this Cool Shirt
New Relic is the only SaaS-based application performance monitoring service
that delivers powerful full stack analytics. Optimize and monitor your
browser, app, & servers with just a few lines of code. Try New Relic
and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may
_______________________________________________
Readable-discuss mailing list
Readable-discuss@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/readable-discuss
