revlog: explicitly initialize static variables I know .bss section is zero-filled, but explicit initialization should be better as we rely on that.

tests: do not change sys.path, it can break loading cext.parsers When running this tests with run-tests, the prefix would resolve mercurial.cext to the source tree and the attempt to load mercurial.cext.parsers would therefore fail since it doesn't exist in it. With the regular search path from run-tests, it is picked up from the temporary prefix correctly. Differential Revision: https://phab.mercurial-scm.org/D4910

tests: deal with differences in tic from ncurses and NetBSD Differential Revision: https://phab.mercurial-scm.org/D4909

closehead: fix close-head -r listification Differential Revision: https://phab.mercurial-scm.org/D4908

import-checker: use testparseutil.embedded() to centralize detection logic This patch fixes issues of embedded() in import-checker.py below, too. - overlook (or mis-detect) the end of inline script in doctest style - overlook inline script in doctest style at the end of file (and ignore invalid un-closed heredoc at the end of file, too) - overlook code fragment in styles below - "python <<EOF" (heredoc should be "cat > file <<EOF" style) - "cat > foobar.py << ANYLIMIT" (limit mark should be "EOF") - "cat << EOF > foobar.py" (filename should be placed before limit mark) - "cat >> foobar.py << EOF" (appending is ignored)

tests: use NO_CHECK_EOF as heredoc limit mark to omit checking code fragments This patch uses NO_CHECK_EOF as heredoc limit mark instead of EOF, in order to avoid checking all python code fragments in test-contrib-check-code.t, because almost all of them has un-recommended implementations intentionally.