From: Matt Harrison <iwasinnamuknow@...>
Date: 2008-10-26T05:23:43+09:00
Subject: regular expressions and conditionals

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I'm writting a little program to convert some source files to html.

I'm using regexp's to determine the content of each line and format it
accordingly. For example, if the line starts with a #, then it should be
output with a div (and id set to 'comment').

The problem is with matching the regular expressions. If I do this:

f = File.new("myfile", "r")
while !f.eof?
  line = f.gets

  if line.match(/^# (.*)/)
    puts "<div id='comment'>#{line.match(/^# (.*)/)[0]}</div>"
  end
end

Then not only do I get the commen lines formatted properly, I also get a
"nil" for every other line in the file.

How should I be using regexps in conditionals? I'm sure this should be easy
but I've googled around for an hour and I can't find what's wrong.

TIA

Matt

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