Re: Replace any multiple whitespaces with single white space

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From	Joel VanderWerf <joelvanderwerf@gmail.com>
Newsgroups	comp.lang.ruby
Subject	Re: Replace any multiple whitespaces with single white space
Date	Mon, 25 Apr 2011 14:14:46 -0500
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On 04/25/2011 12:02 PM, Josh Cheek wrote:
> On Mon, Apr 25, 2011 at 1:51 PM, Joel VanderWerf
> <joelvanderwerf@gmail.com>wrote:
>
>> On 04/25/2011 11:44 AM, Michelle Pace wrote:
>>
>>> Hello, I need to make the first string below into the second string.
>>> That is, only single white spaces are permitted.
>>>
>>> "1/4 WELDING    LEVER FRONT DRW 14844-C  MAT  WMA1CM-WLFRONT"
>>> into
>>> "1/4 WELDING LEVER FRONT DRW 14844-C MAT WMA1CM-WLFRONT"
>>>
>>>
>>>
>>> I want to use the sub! method. Why does the below code not work? Is my
>>> pattern incorrect?
>>>
>>> descrip = "1/4 WELDING    LEVER FRONT DRW 14844-C  MAT  WMA1CM-WLFRONT"
>>> descrip.sub!(/\s+/,' ')
>>> puts descrip
>>>
>>
>> sub! only affects the *first* match. You can substitute globally with gsub.
>> Also you might as well only match 2 or more spaces:
>>
>> descrip.gsub!(/\s\s+/,' ')
>>
>>
>
> I think the original regex is better, because leads to more consistent
> results:
>
> "hello\tworld    !".gsub(/\s\s+/,' ') # =>  "hello\tworld !"
> "hello\tworld    !".gsub(/\s+/,' ')   # =>  "hello world !"
>

Good point, but it depends on what you're trying to be consistent with. 
Maybe the goal is to squeeze space, but preserve tab layout for readability.

Thread

Replace any multiple whitespaces with single white space Michelle Pace <michelle@michellepace.com> - 2011-04-25 13:44 -0500
  Re: Replace any multiple whitespaces with single white space Joel VanderWerf <joelvanderwerf@gmail.com> - 2011-04-25 13:51 -0500
    Re: Replace any multiple whitespaces with single white space Josh Cheek <josh.cheek@gmail.com> - 2011-04-25 14:02 -0500
      Re: Replace any multiple whitespaces with single white space Joel VanderWerf <joelvanderwerf@gmail.com> - 2011-04-25 14:14 -0500
        Re: Replace any multiple whitespaces with single white space Gunther Diemant <g.diemant@gmx.net> - 2011-04-25 15:43 -0500
    Re: Replace any multiple whitespaces with single white space Brian Candler <b.candler@pobox.com> - 2011-04-26 07:03 -0500
      Re: Replace any multiple whitespaces with single white space Joel VanderWerf <joelvanderwerf@gmail.com> - 2011-04-26 11:27 -0500
      Re: Replace any multiple whitespaces with single white space Joel VanderWerf <joelvanderwerf@gmail.com> - 2011-04-26 11:31 -0500
  Re: Replace any multiple whitespaces with single white space John W Higgins <wishdev@gmail.com> - 2011-04-25 13:56 -0500
  Re: Replace any multiple whitespaces with single white space Alexander McMillan <alexandermcmillan@hotmail.com> - 2011-04-26 05:18 -0500

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