I'm mildly OCD when it comes to formatting my code.
One thing I do quite often is align variables like this (using tabs for spacing):


However, on some of my older scripts I used spaces for spacing.
In the process of converting these spaces to tabs, I've noticed that if I highlight all of the spaces and hit tab, it indents the line instead of replaces the spaces.
I'd like for it to replace the spaces when I hit tab instead of indenting the line.

Logic:
if selection contains all spaces, then insert tab, else indent block