Not sure I'm completely following but it jumps out at me in your second block that the string in $b contains regular expression metacharacters (specifically parens) so that's prossibly the problem. Your "Adjektive (Nominalflexion)~87" is going to be treated as looking for the string "Adjektive" followed by a SPACE followed by the string "Nominalflexion" (which will be captured because of the parens) followed by "~87".

If you use \Q\E escapes to setup as $c = "\Q{$sep$b$sep}\E" that should appropriately escape the metacharacters and let them match literally.

The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re: Regex with HTML::Entities by Fletch
in thread Regex with HTML::Entities by Horst.Lohnstein

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