bug#23957: [PATCH] Make fboundp an alias for symbol-function

[Philipp Stephani]

Drew Adams <drew.adams@oracle.com> schrieb am Di., 12. Juli 2016 um 18:14 Uhr:

It is not backward compatible, since `fboundp' returns t if
there is a function value and `symbol-function' returns that
function value.  This will break any code that depends on
getting t or nil.

And the docstring of `fboundp' does specify that it returns t (not just non-nil), so this is indeed a breaking chance.

I'd suggest to simply remove the FIXME instead.