In my code file I have several lines asT V= X T(A); And I want the text after = to be replaced as X(T,A) with some help I got this pattern   s/X\s+([^\(]*)\(/X(\1,/g; for find and replace it works great but the problem is when we have no args to pass for T  Ex.T V= X T(); then after replacement it will be like X(T,) (see the extra comma) I knew it's because of /X(\1, can somebody help me rid of that extra comma, Sadly I am no regex guy.Is there any sort of conditional we could have to say if the () is empty then do X(\1/g rather than /X(\1,/g
Regex conditional
regular expression;perl