Reading through loudgain's documentation, I came across this remark : https://github.com/Moonbase59/loudgain#uppercase-or-lowercase-replaygain_-tags

"File bug reports for any player you use that doesn’t handle ReplayGain tags at all or in a case-sensitive manner!"

And this got me thinking : how does Strawberry handle Replaygain tags (for the concerned formats, namely mp3) ? Upper-case (as it should be) ? Lower case (as it's often encountered) ? Or case-insensitively ?