spring/spring — comment on commit 9b4c1eb38a29edebf3ad40a93affc4016f4c41d6
File:  line 0
By Kaylewt:

Explain... the ONLY thing that can _change_ heading is the manipulation of frontdir.y (such that after the SetHeadingFromDirection call heading != old heading) and that is disallowed when !forceHeading, so _what_ does _this_ fix concretely?