tests/test-hgwebdirsym.out

deltaparent(): don't return nullrev for a revision containing a full snapshot

this allows us to simplify manifest.readdelta and revlog.revdiff

adding a
adding b
adding c
% should succeed
200 Script output follows


/al/
/b/
/c/

200 Script output follows

a
200 Script output follows

b
200 Script output follows

c
% should fail
404 Not Found


error: repository circle not found
404 Not Found


error: repository circle not found
404 Not Found


error: repository circle not found
% collections errors