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Answer: How do I split a file into separate sections?

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Q&A > regular expressions > How do I split a file into separate sections? contributed by chromatic

while ($data =~ s!(TI|AU|JN):(.*)?!!s) { push @{$sections{$1}}, $2; }
That will build a hash of arrays with the headers as keys. Things you might want to change are as follows:
  • With the /s modifier on the regex, . will match newlines. You may not want this (but it makes the regex much more complicated)
  • You may not want a hash of arrays. Remove the @ and use the .= operator
  • You may want to match a newline after the colon.
This all depends on your data. Personally, I'd use split in a heartbeat.

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