RESOLVED: tab vs 4 space indent

when i open this script in IDLE or sublime it is tabs indent. When I edit in locked touch DAT it becomes 4 spaces? is this a bug ?

I paste same tab format in Touch and its 4 space indent.
tabstst.zip (7.09 KB)

I can’t reproduce this on 2018.27550
Also when I open the attached DigitalOutput6.2.py in Sublime3, I see it has only spaces used for indentation?
spaces_sublime.png

ah, I think I understand what is going on here files are all space indented, yes… in IDLE Ive been hitting backspace and for some reason that deletes 4 spaces in one stroke … I assumed that meant a tab … duh … why would I assume something so intuitive ? :wink:
Must be a setting or ‘feature’ in IDLE I guess?
thanks for playing along … still learning over here.