Document the dirconfig format more precisely

The parser docstring only described + and - prefixes even though the
function returns a 3-tuple including the ! ensure bucket. Fill that
in, and pull the path-vs-glob distinction out of the prose in
projects.adoc into a subsection of its own — that ambiguity is at
the root of recurring confusion (#740, #1109, #680, #1941).

0 files changed, 0 insertions, 0 deletions