ECI: ECI 899 binary in `UNICODE_MODE` now converted from UTF-8,
manual: use modified "haddock.theme" for nicer syntax highlighting;
general: suppress clang-tidy-21/22 warnings;
Hi Ulrich, thanks for pointing this out. Eventually got this working by reverting to setting the ENVIRONMENT directly and backslashing semicolons in $ENV{PATH}, rather than using ENVIRONMENT_MODIFICATION and path_list_prepend. It seems to work now in the CI and locally, regards, Martin
CI: windows: try env_path backslashing semicolons hack
CI: windows: try adding backend_qt to PATH
test_qzint: try setting CMAKE_CURRENT_SOURCE_DIR
test suite: Windows: use old-fashioned setting of ENVIROMENT PATH