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

Replies are listed 'Best First'.
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.

[reply]
[d/l]
[select]
      He stated that there might be spaces between the newlines :-)
[reply]

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

[reply]

In Section Seekers of Perl Wisdom