The plugin code does matter, I found this out when creating a templating script that didn’t replace the main
<JUCERPROJECT> id (from which the plugin code is derived if not explicitly set).
There are 456976 combinations of the plugin code (if I understood it correctly), and although that leaves plenty of scope for total number of plugins in the wild, it doesn’t really give that much wiggle room for collisions happening by chance really.
No idea how you’re supposed to guarantee that yours won’t clash, because the result is that the 2nd plugin you install with a colliding plugin code will open whichever plugin got installed first with that code, perhaps someone with more knowledge can chime in?
It would be a damn useful community website that had a database of existing plugin codes if there is no mechanism for discovering them otherwise!
edit: no idea if it’s the combo of plugin code and manufacturer code, quite easy to test though, fingers crossed it is the combination, because that will almost entirely negate the collision problem.