Ggtcf

The issue for me here is to capture the content inside single quotes(like 'xyz').

But the apostrophe which is the same symbol as a single quote(') is coming in the way!

The regex I've written is : /(w'w)(*SKIP)(*F)|('[^']*')/

The example i have used is : Hello ma'am 'This is Prashanth's book.'

What needs to be captured is : 'This is Prashanth's book.'.

But, what's capured is : 'This is Prashanth'!

Here is the link of what i tried on online regex tester

Any help is greatly appreciated. Thank you!

You can't use [^'] to capture a text that contains ' with in and in your example, This is Prashanth's book. contains a ' character within the text. You need to modify your regex to use .*? instead of [^'] and can write your regex as this,

(w'w)(*SKIP)(*F)|('.*?'B)

Demo with your updated regex

Also, you don't need to escape a single quote ' as that has no special meaning in regex.

From your example, it is not clear whether you want the captured match to contain ' around the match or not. In case you don't want ' to be captured in the match, you can use a lookarounds based regex and use this,

(?<=B').*?(?='B)

Explanation of regex:

• 
  (?<=B') - This positive look behind ensures what gets captured in match is preceded by a single quote which is not preceded by a word character which is ensured by B
  


• 
  .*? - Captures the text in non-greedy manner


• 
  (?='B) - Ensures the matched text is followed by a single quote and B ensures it doesn't match a quote that is immediately followed by any word character. E.g. it won't match an ending quote like 's
  

Demo

For the string you have provided, you can use the regex:

B'K(?:(?!'B).)+

Click for Demo

Explanation:

• 
  B - a non-word boundary


• 
  ' - matches a '
  


• 
  K - forget everything matched so far


• 
  (?:(?!'B).)+ - matches 1+ occurrences of any character(except newline) which does not start with ' followed by a non-word boundary