From: 7stud -- <lists@...>
Date: 2012-12-17T10:01:18+09:00
Subject: Re: print - and strip text between tags using Nokogiri

Paul Mena wrote in post #1089283:
>
> # remove blank lines from file
> fh = File.open('snippet.txt')
> while( !fh.eof)
>     line = fh.readline.chomp
>     # remove leading and trailing blanks
>     line.strip!
>     # skip empty lines
>     next if line == ''
>     # convert tab chars to blanks
>     line.gsub!(/\t/,' ')
>     # substitute a single blank for a sequence of blanks
>     line.squeeze!(' ')
>     # add code to process line if needed
>     puts line
> end
> fh.close
> exit(0)
>

I forgot to mention.  There are several ways to read line by line from a 
file, but your loop is particularly ugly.   If you use my favorite:

IO.foreach(fname) do |line|
  line = line.chomp
  ...
  ..
end

The added benefit is that the file is automatically closed when the 
block exits.

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