Difficulties when discriminating between lower and uppercase

I have two (forked) shaders on shadertoy, which do only discriminate by the casing (for some reason). Now once one file is cached, the other will not be loaded.

This is because it loads the wrong JSON file from cache. On windows, the system can not store two files with only different casing. Thus causing the issue.

It needs to be tested, whether the file is stored with the very exact casing otherwise it can not be reused from cache.

Start by tracing the Shadertoy shader cache lookup and the JSON file path construction. Test two shader identifiers that differ only by casing on a case-insensitive filesystem, then verify that each exact-cased cache entry is selected without reusing the other one.

Written by the indexing model from the issue text.