fileset: exclude deleted files from matchctx.existing() Running: $ hg debugfileset 'binary()' would traceback if there were one deleted file in the working directory. It happened because matchctx.existing() was filtering files against the ctx.__contains__() but deleted files are still considered part of workingctx.

test-fileset: test file status predicates

fileset: actually implement 'minusset' $ hg debugfileset 'a* - a1' was tracing back because 'minus' symbol was not supported.

tests: test filesets with test-fileset.t

merge with stable

rollback: write dirstate branch with correct encoding