This was suggested in pull request #1226. Ideally we would make the limit flexible, e.g. see how much we can generate in 1-2 seconds, but that is a non-trivial change, so the fixed limit will do for now, and while truncated data is suboptimal, it’s better than being killed due to QL manager’s timeout.
UTIs are taken from both the Apple supplied list and newly created for those that didn't exist. For those languages where no clear 'owner' existed to provide the reverse-DNS notation we use a com.macromates.* stand-in.