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Re: regular expression: match multiple newlines

by Cristoforo (Curate)
on Nov 03, 2013 at 19:42 UTC ( #1061065=note: print w/replies, xml ) Need Help??

in reply to regular expression: match multiple newlines

Your code is reading 1 line at a time. You need to 'slurp' the file and apply the regular expression. perl -0 -p -e 's/\n\s*\n/EEEEE/g' textfile

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Re^2: regular expression: match multiple newlines
by Kenosis (Priest) on Nov 03, 2013 at 19:55 UTC

    Good point! However, \n\s*\n would replace \n\x20\n --a space surrounded by two newlines--which is not two consecutive newlines, thus the prior \n{2,} suggestion.

    Edit: My apologies. Didn't notice the the OP's mentioning the possibility of other whitespace between the newlines.

      He stated that there might be spaces between the newlines :-)

        You are indeed correct. My bad. Will strike my postings above.

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