Regex searching for '

[Björn]

Hello

I need some help using regular expresions.
I need an expresion to find a single ' in a string. The problem, in the
string multiple ' are valid
Example:
My'Test''String'''Test

Only the ' between my and test is invalid.
Can anyone help me?

thx

Björn

 

[Ben Voigt]

Hello

I need some help using regular expresions.
I need an expresion to find a single ' in a string. The problem, in the
string multiple ' are valid
Example:
My'Test''String'''Test

Only the ' between my and test is invalid.
Can anyone help me?

negative lookahead:

(?!')'(?!')

or match a greedy '* and check the result for length 1

 

[Björn]

Hi Ben

'* doesn´t work for me, it will find '' too.
This (?!')'(?!') doesn´t work it returns no matches.

thx
Björn

 

[Ben Voigt]

Hi Ben

'* doesn´t work for me, it will find '' too.

Then checking the length of the match gives you the information you want.

This (?!')'(?!') doesn´t work it returns no matches.

Should have been (?<!')'(?!')