How to add the option to allow only one space in a regex?

@jerad 

To allow only one space in a regex pattern, you can use the following regex expression:

1

^S+(sS+)?$

Explanation of the pattern:

• ^ : Start of the line
• S+ : Match one or more non-space characters
• (sS+)? : Match an optional space followed by one or more non-space characters. This part allows for one space in the middle of the string.
• $ : End of the line

You can use this regex pattern in your code to validate input and allow only one space in a string.