GMLAS Schema path with space set with options fails

[vindoctor]

When calling driver_options_ = CSLAddString(driver_options_, "XSD=C:\path with space\gmltest_1.0.0.xsd");

with

OGRDataSource* poDS = (OGRDataSource*)GDALOpenEx(filenametouse.c_str(), GDAL_OF_READONLY | GDAL_OF_VECTOR | GDAL_OF_VERBOSE_ERROR | ((bUpdate) ? GDAL_OF_UPDATE: 0) | GDAL_OF_SHARED, allowed_drivers_, driver_options_, NULL);

Fails to find the schema. NOTE if you set the path with spaces in the XML/GML file, it works one would expect.

The reason this does not work is because of an assumption/bug when things get tokenized.

As when this gets called:

std::vector OGRGMLASDataSource::BuildXSDVector(
const CPLString& osXSDFilenames)

It splits the the file path up because of the spaces (flags are 0)

char** papszTokens = CSLTokenizeString2(osXSDFilenames," ,",0);

Currently no work around exists other than to fix/compile your code to get around this, or you just define the schema path inside the gml/xml to find the schema file.

One would expect they can give a file path to a schema with spaces using the XSD= option!

This is the latest release 4.2.1
I am running on a Windows 10 OS