Re: Regex help

in reply to Regex help

E:\Temp>perl -Mstrict -we "$_=7;die qq(matched '$&'\n) if '1234567_.'=
+~/[$_]/"
matched '7'
[download]

Seems like any punctation variables are interpolated inside regex character classes.

This is a surprise (for me at least; and to ww above too it seems)

Is that documented behaviour? Where?

Update: Fixed attribution of surprise, naming the wrong person (graff) when citing a post of ww.