in reply to Re: regex: only want [a-zA-Z] and comma chars in a string
in thread regex: only want [a-zA-Z] and comma chars in a string

Ahhh ... the pitfalls of coding to the test cases instead of the specification. The OP specifically stated that he needed the characters to be in the class [a-zA-Z], which your code doesn't check for. Try the following string "1", which should fail.

------
We are the carpenters and bricklayers of the Information Age.

The idea is a little like C++ templates, except not quite so brain-meltingly complicated. -- TheDamian, Exegesis 6

... strings and arrays will suffice. As they are easily available as native data types in any sane language, ... - blokhead, speaking on evolutionary algorithms

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.