hgignore: ignore Unix editor backups
context: improve arg-checking assert.
run-tests: give each child its own tmp dir (iss...
run-tests: give each child its own tmp dir (iss...
dirstate: avoid a race with multiple commits in...
atomictempfile: rewrite docstring to clarify re...
atomictempfile: avoid infinite recursion in __d...
atomictempfile: make close() consistent with ot...