Perl Masters:
Say I have a txt file like this:
blahblahblahblahblahblah blahblah blahblah blahblahblahblah blahblahbl
+ahblahblahblah! blahblah blahblah blahblah blahblahblahblah.

blahblahblahblahblah, blahblahblahblahblahblahblahblah blah

blahblah blahblah blahblahblahblahblahblah; blahblahblahblah!

blahblahblahblah, blahblahblahblah blahblahblahblah blahblahblahblah. 
+blahblahblahblah, blahblah.

[download]
How could I use powerful Perl to relace the three blank lines with spaces? and get something like this: 
 
blahblahblahblahblahblah blahblah blahblah blahblahblahblah blahblahbl
+ahblahblahblah! blahblah blahblah blahblah blahblahblahblah. blahblah
+blahblahblah, blahblahblahblahblahblahblahblah blah blahblah blahblah
+ blah blahb lahblahblahblah; blahblahblahblah!blahblahblahblah, blahb
+lahblahblah blahblahblahblah blahblahblahblah. blahblahblahblah, blah
+blah.

[download]
I've tried something like s/\n/ /; and it did't work. Please enlighten me.... Thank you...

In reply to delete blank lines in a txt file by supernewbie

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