"Unsaved Changes" pops up when exiting a custom level that hasn't changed.

[MrIceblock]

SuperTux version: 0.6.1.1
System information: Ubuntu 20.04 LTS

Expected behavior

Don't pop up when nothing is done

Actual behavior

Pops up when nothing is done

Steps to reproduce actual behavior

Edit a Custom Level without doing anything, and then exit the level

Additional debugging information

I don't think this is a bug.

[Semphriss]

Investigating on this, and I found a related error : When opening a level and performing multiple actions, undoing only the last of them then quitting will not ask for save, despite multiple changes having been made.

I'm currently working on fixing this.

[Semphriss]

Alright, I managed to fix the original bug : a freshly loaded level no longer asks to save before quitting.

On the related bug I found, it seems as a single undo resets the entire stack (somehow). I'm still investigating to fix this issue.