Ruby regex delete space

Question

Hello and excuse me again

I need a REGEX for delete the character space (" "). If this character is not followed for other space character.

Example String

"This  is  a  ex am ple" 

Result 

"This  is  a  example"

I was trying this REGEXES:

string.gsub(/\s{1}/,"")

Also I thought in submatches replace for I don´t know as use it in ruby

string.gsub(/(\w)( )(\w)/,/\1\3/)

However throw a exception.

Thanks in advance

godspeedlee · Accepted Answer · 2012-08-02 15:35:38Z

4

try with this:

print "This  is  a  ex am ple".gsub(/(?<=\w)\s(?=\w)/, '')

output:

This  is  a  example

edited Aug 2, 2012 at 15:35

answered Aug 2, 2012 at 15:23

godspeedlee

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1 Comment

godspeedlee Over a year ago

I don't think (?<=\S)\s(?=\S) is a good idea. It maybe combine non-alphabet & alphabet together. Sorry PraVn, I change it back.

denis.peplin · Accepted Answer · 2012-08-02 15:23:32Z

1

You have small error in second gsub. Try this:

string.gsub(/(\w)( )(\w)/, '\1\3')

I checked this on your example, it works for me.

answered Aug 2, 2012 at 15:23

denis.peplin

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1 Comment

maxiperez Over a year ago

Thank you very much. I use your solution

InternetSeriousBusiness · Accepted Answer · 2012-08-02 15:23:03Z

0

string.gsub( /(\w) (\w)/, '\1\2' )

What do you want to happen to a space at the start?

answered Aug 2, 2012 at 15:23

InternetSeriousBusiness

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Comments

Alexey · Accepted Answer · 2012-08-02 15:25:37Z

0

Try this reg expression:

string.gsub(/(?<!\s)\s(?!\s)/, '');

Input:

"This     is    a  ex am ple"

Output:

"This     is    a  example"

edited Aug 2, 2012 at 15:25

answered Aug 2, 2012 at 15:18

Alexey

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2 Comments

maxiperez Over a year ago

Excuse me The Regex in my opinion is correct. However when I try this regex I obtain -> "This is a ex am ple" (Excuse me I obtain same result)

Alexey Over a year ago

I misunderstood your question, now i got it. I modified the answer

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