Regex to extract only text after string and before space

Question

I want to match text after given string. In this case, the text for lines starting with \"BookTitle\" but before first space:

BookTitle:HarryPotter JK Rowli         


        

Answer 1

With the 'multi-line' regex option use something like this:

 ^BookTitle:([^\s]+)  

Without multi-line option, this:

 (?:^|\n)BookTitle:([^\s]+)