Re: request for isprint character class code in string.gsub patterns

[David Jones <drj@...>]

On Sep 24, 2004, at 21:55, David Jones wrote:
> What I want to do is match all non-printable characters.  C provides 
> this concept via isprint and isgraph, but in Lua I have to use the 
> union of " ", "%p" (punctuation), and "%w" (alphanumerics).  Which 
> relies on isprint being a union of space, isprint,

I mean ispunct; a union of space, ispunct, and isalnum.  Anyone who was 
following up to this point could probably guess that though.

>  and isalnum (which the C standard guarantees, but it seems tenuous).
>
> David Jones