From: Aldric Giacomoni <aldric@...>
Date: 2009-11-19T23:54:29+09:00
Subject: Re: How to strip ruby comments in a ruby line of code?

Aldric Giacomoni wrote:
> Alexandre Mutel wrote:
>> Aldric Giacomoni wrote:
>>> I'm still only learning regular expressions (I'll do another shameless 
>>> plug for rubular.com here), but you could do this:
>>> string = string.match(/^.*#).to_s[0...-1]
>>> 
>>> Yes, it's a poor solution, but should you have nothing else, it'll do.
>> 
>> the problem with your solution is that this line of code will remove 
>> valid code :
>>    myvar_s = "#{myvar}"
>> 
>> The problem is to handle correctly string escape sequence... it's 
>> possible, but it requires much more work... I just want to know if 
>> someone else did this?!
> 
> Actually, no, because regexps are greedy by default, so it'll go to the 
> very last '#' it finds.

file # => array containing each line of the file you want to clean up
file.map! do |line|
  line =~ /(^.*)#/
  $1
end
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