Re: Help with regexp

[Stefan Monnier]

>> > Hi,
>> >
>> > I am trying to find the regexp that could match on these:
>> >
>> > "=>foo"

> [...]

>> "=>\\([^:]*\\(\\|:[^:]*\\(\\|:[^:]*\\)\\)\\)"

> Wow, Pascal. You have taught this old dog a new trick. Up to now, I
> hadn't thought of putting an alternative (i.e. "|") at the start of a
> parenthesized sub-expression. Thanks :-)

An equivalent way is to use ? (or ?? if you care about the order in
which it's matched):

  "=>\\([^:]*\\(:[^:]*\\(:[^:]*\\)?\\)?\\)"


        Stefan