Regex start searching from the end of the string (reverse)

Question

I have strings that have blocks enclosed in underscores in them. Example:

*Text* _word_ it is something we read every day. _Words in texts_ can be really exp         


        

Answer 1

The text between the second last _ and the end of the string should be matched

Use a negated character class, like

([^.]*$)

It will match everything from the end of the string that isn't ., resulting in the last quote (assuming each quote ends with a .)

http://regex101.com/r/fA3pI7/1

Answer 2

Have a try with:

((?:_[^_\r\n]*){2})$

It matches an underscore followed by any number of any character that is not underscore or line break, all that occurs twice before the end of lien.