Re: Help with regexp

[Pascal J. Bourguignon]

Xavier Maillard <xma@gnu.org> writes:

> Hi Pascal
>
>    "=>\\([^:]*\\(\\|:[^:]*\\(\\|:[^:]*\\)\\)\\)"
>
> Awesome !
>
> Would you mind explaining it to me step by step in plain english
> please ? :)


(insert   "=>\\([^:]*\\(\\|:[^:]*\\(\\|:[^:]*\\)\\)\\)") C-x C-e
gives:
=>\([^:]*\(\|:[^:]*\(\|:[^:]*\)\)\)

Now parse it:

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

   equal superior, 
           followed by any number of non colon, 
                   followed by either nothing or
                        a colon followed by any number of non colon,
                                  followed by either nothing or
                                      a colon followed by any number of non 
colon.

                             

-- 
__Pascal Bourguignon__