I want to know if there's a way I can duplicate characters that's part of a single line without duplicating the whole line, using regular expression, and add them to the beginning of a line, that way I won't have to do it manually and risk causing error.
I want to be able to replace values like this
pl=100 pr=100 pj=100 bl=100 br=100
pl=pl=100 pr=pr=100 pj=pj=100 bl=bl=100 br=br=100
Essentially copying the first three characters and adding them to the beginning of the line in this case.