Do you mean you wish to ignore all lines which either have only the string "case :" or start with a colon or start with the string "struct" and put that in one regex?

If so, this will work:

use Modern::Perl;

while (<DATA>) {
    next if /^\s*case :$|^:|^struct/;
    print;
}

__DATA__

case :
   case :
case : keep me
: ignore this
keep this line
struct: get rid of me
 struct: but keep me

[download]

By the way, your regex will also ignore lines which have anything between "case" and the colon. That does not seem to conform to your requirement.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

My blog: Imperial Deltronics

In reply to Re: regfular expression hlep by CountZero
in thread regfular expression hlep by rajans

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