C_WRITE_OPEN_ERROR   47 courgette/courgette_minimal_tool.cc     if (status == courgette::C_WRITE_OPEN_ERROR) Problem("Can't open file.");
C_WRITE_OPEN_ERROR  379 courgette/courgette_tool.cc   if (status == courgette::C_WRITE_OPEN_ERROR)
C_WRITE_OPEN_ERROR  424 courgette/ensemble_apply.cc     return C_WRITE_OPEN_ERROR;