Visual C interpolates `__FILE__` with the absolute _Windows_ path of the source file. GCC interpolates it with the relative path, and the tests even verify that. So let's make sure that the unit tests only emit such paths. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>