eval or something else

[Bohne]

if ($_ =~ /$EXPRESSION/$I)

My variable $I is either 'i' or ' '
How do I get perl to 'use' this value in the above?

 

[anno4000]

if ($_ =~ /$EXPRESSION/$I)

My variable $I is either 'i' or ' '
How do I get perl to 'use' this value in the above?

You don't. The modifier in a match operator isn't subject to
interpolation. You can do this:

if ( /(?$I:abc)/ ) { ...

(No need to bind the match to $_, that's the default)

For this to work you must set $I to '' if you want case-sensitivity.
Blank isn't allowed in that position.

Anno

 

[Bohne]

Brilliant!

I love you!