Tabs in the repl cause display issues

[BridgeAR]

Just copy something like var abc = 5; in the repl and go back and forth and remove or add some characters. Push enter and go up and down in the history and further issues will resolve.

The marker is not correct and sometimes things are not visible that should be and the other way around.

I guess we could either just display tabs as space (that would likely resolve the problem easily) or

We have to properly fix this and to teach the code to jump to the correct position if there's a tab.

[juanarbol]

It's weird because shows a very long space (as tab), but delete (looks like) works like spaces

[antsmartian]

The marker is not correct and sometimes things are not visible that should be and the other way around.

I guess the cursor position movement doesn't take care of tabs here. Will check this sometime.

[antsmartian]

Ok I had taken a look, there are few things we can do:

1. Treat tabs as spaces as suggested by @BridgeAR. Should be simple fix.
2. \t's are counted as a single entity hence the cursor length is wrong. Fixing it would be to take line count plus the tab count if any (but we need to then check wordLeft, wordRight and other cases if at all 🤔 ).

I would suggest 1 as there is no way user can emit tab within a line, apart from pasting strings to the repl.