The C standard working group is the avenue for vendors/partners to coordinate. Whenever the standard settles on "implementation defined" that's a confirmation t

The C standard working group is the avenue for vendors/partners to coordinate. Whenever the standard settles on "implementation defined" that's a confirmation that the vendors failed to reach an agreement (often because the standardization effort happened too late, and they've already implemented diverging solutions, and nobody wants to break their userbase).