6785: Fix "no value set for FileTextQuery(FileId(..))" r=jonas-schievink a=jonas-schievink
Fixes https://github.com/rust-analyzer/rust-analyzer/issues/6622
Let's hope I got it right this time, but I feel like I slowly begin to understand the main loop logic.
bors r+
Co-authored-by: Jonas Schievink <jonasschievink@gmail.com>
The task of `partition` function is to bin the flat list of paths into
disjoint filesets. Ideally, it should be incremental -- each new file
should be added to a specific fileset.
However, preliminary measurnments show that it is actually fast enough
if we just optimize this to use a binary search instead of a linear
scan.
