[illumos-gate] 16830 mdb ::dis could work on physical addresses -- Robert Mustacchi <rm⊙fo>

am I completely misreading regex(7), or should both of these regexes match: gist.github.com/jasonbking/b3cb4b2fc33e31bf6a7057176098f05f

[[:digit:]] no?

that is, `[<foo>]` is a character class, and `[:digit:]` expands to the set of characters that are digits in this locale

so `[[:digit:]]` forms a character class of those digits

maybe?

I should note I'm saying this from memory, and memory of a book in the 90's that explained it really well. Definitely not that manual page, which regardless of whether I'm right, does not explain it well

or, potentially, does not explain it

hrm... ok

that worked

the man page though is not very clear on that

at least to me

that [:xxx:] is what goes inside of [] vs. being a variant of []

and character classes are locale aware

en.wikibooks.org/wiki/Regular_Expre…ons/POSIX_Basic_Regular_Expressions says "a[:digit:]b is an error: character classes must be in brackets"

oh that has much better examples than the manpage

i've always tended to just use [0-9] or such since that's historically worked everywhere...