In my case, I tried to load https://raw.githubusercontent.com/ARCOMM/Mission-Testing-Checklist/master/checklist.html with the following CfgCommands config:
class CfgCommands {
allowedHTMLLoadURIs[] += {
"*.github.com/ARCOMM/*",
"*.githubusercontent.com/ARCOMM/*"
};
};However that did not work initially, until I changed the allowed URIs to all lowercase:
class CfgCommands {
allowedHTMLLoadURIs[] += {
"*.github.com/arcomm/*",
"*.githubusercontent.com/arcomm/*"
};
};at which point it worked.