The recent upstream Vim merge (v9.0.1365) contained a lot of refactoring in the option setting code. Handling option setting was now done via a standardized callback, with a struct optset_T. In resolving the upstream merge conflicts, did_set_fullscreen was erroneously using the wrong value from the union (should be using boolean instead of number) which leads to it occasionally giving unpredictable results. Fix the bug.
Note that the bug seems a little unpredictable since it depends on compiler specifics. The only way it was known to trigger was by set diff followed by set fullscreen.
The recent upstream Vim merge (v9.0.1365) contained a lot of refactoring in the option setting code. Handling option setting was now done via a standardized callback, with a struct
optset_T. In resolving the upstream merge conflicts,did_set_fullscreenwas erroneously using the wrong value from the union (should be using boolean instead of number) which leads to it occasionally giving unpredictable results. Fix the bug.Note that the bug seems a little unpredictable since it depends on compiler specifics. The only way it was known to trigger was by
set difffollowed byset fullscreen.Fix #1378