geminates

[potetjp]

A recent controversy regarding geminates in Tausug (Southern Philippines)
has made me realize that some scholars seem to use the terms _geminate_and
_long consonant_ as though they were synonymous.
I am aware that in some theories (autosegmental phonology?)  both are
treated on equal footing.
Yet, a double /m/, for instance, is not a long /m/.
Has this problem been addressed in Austronesian languages?
Jean-Paul G. Potet