Hello!,
Racer[1] uses libsyntax to parse small snippets of code when trying to complete or find definitions.
Unfortunately libsyntax panics on parse errors, which means racer must wrap calls to libsyntax in a thread. Spawning threads in this way is expensive for racer, doubling the time taken for a search in a lot of cases because of the number of times it calls into libsyntax.
I’m considering changing libsyntax to use Result<>s rather than panicing on a fatal error. In principle is this a change that the devs would be happy to accept?
Thanks,
Phil