I want to be able to find certain lines, copy them, add the copy right below the existing line, with one word changed. For example:
Feature: 2010/03/picture.jpg
I want this to become:
Feature: 2010/03/picture.jpg
Teaser: 2010/03/picture.jpg
Is there any way to do this in Sublime Text 3? If not, is there another text editor where I can achieve this?