I'm using File::Stream to set a regex as the record delimiter for one sentence per record. Obviously /.\s/ is inadequate because, e.g. " e.g. " and " i.e. " are not ends of sentences. (This also illustrates why searching for answers to this question is problematic.)

I've tried /(?<!( e|\.g)|( i|\.e))\.\s/ but even though this is a "fixed-width lookbehind" it doesn't work as expected.

/(?<!( e|\.g))\.\s/ also fails.

Strangely, /(?<! e|\.g)\.\s/ works in the debugger as a stand alone regex but not as the separator argument to File::Stream->new.

I can get both " e.g." and " i.e." to be ignored in the debugger with /(?<! i|\.e| e|\.g)\.\s/ (I can live with excluding " e.e.", " i.g.", etc.) but, again, not in the separator argument to File::Stream->new.

Any suggestions?

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