History of SelfTest::test_negativeflag 1 change

In testbench/selftest.py, lines 199–221 on 9a6dd8288e688b1c07d0291a355ac1ccee4ba62e289bd7992b925997dad453d3. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 199,221:testbench/selftest.py.