[Bug 43182] Right command acting as Alt

https://bugs.winehq.org/show_bug.cgi?id=43182

--- Comment #1 from Ken Thomases  ---
By default, both Command keys send Windows Alt.  The Option keys (which on some
keyboards are labeled "Alt") are used to access additional characters from the
keyboard layout.

There is not currently any way to change what the Command keys send.  If you
want to change it so the Option keys send Alt, too, you can set either or both
of these registry settings:

[HKEY_CURRENT_USER\Software\Wine\Mac Driver]
"LeftOptionIsAlt"="y"
"RightOptionIsAlt"="y"