What extensions does github support, for syntax highlighting and for code/language recognition?

Question

For my Open GL shaders, GitHub seems to recognize fragment shader ( extension .fs ) but not vertex shaders ( extension .vs )

Since GLSL has no defined extensions (it loads text) what is a good extension to use so I get my code recognized.

As an example my shaders Example Shaders
Note how .fs looks pretty and .vs like plain text

Answer 1

See if a .gitattributes linguistic directive, as I mentioned in " Github changes repository to wrong language ", would be enough:

*.vs linguist-detectable
*.vs linguist-language=GLSL

lib/linguist/languages.yml GLSL section does include " .fs ", but no " .vs ", only " .vsh "