The completion table will be recomputed when the input prefix changes, even if
there is trailing Orderless filter input. Affected are cape--dynamic-table
(cape-dict, cape-company-to-capf): and cape-capf-buster. See the discussion at
https://github.com/minad/cape/discussions/106 for details.

This Capf transformer can be useful in rare scenarios like debugging or when the
wrapped Capf wants to completely control filtering, without any interference
from outer completion styles. For example `cape-capf-passthrough` can be useful
in combination with `cape-company-to-capf`, such that filtering is completely
left to the Company backend. A special case discussed recently with @dgutov
involves `company-dabbrev` which nowadays uses completion styles itself for its
internal filtering, where double filtering can be avoided via
`cape-capf-passthrough`, see company-mode/company-mode/pull/1215.