File Editor- Feature request

I like that the editor does a lint on my file in real time. However, there is a mistake that I make from time to time (don’t tell anyone that I made a mistake). When I cut and paste a YAML code segment into a YAML file that accidentally contains a tab character, I get:

found character '\t' that cannot start any token in ...

How difficult would it be to find stray tab characters in the auto validation feature?