playing-with-github-pages

• https://simonw.github.io/playing-with-github-pages/ serves index.html
• https://simonw.github.io/playing-with-github-pages/foo serves foo.html
• https://simonw.github.io/playing-with-github-pages/foo.html serves foo.html
• https://simonw.github.io/playing-with-github-pages/bar.json serves bar.json
• https://simonw.github.io/playing-with-github-pages/bar serves a 404 (actually the custom 404.html page)

And in a folder/:

• https://simonw.github.io/playing-with-github-pages/folder redirects to /folder/
• https://simonw.github.io/playing-with-github-pages/folder/ serves folder/index.html
• https://simonw.github.io/playing-with-github-pages/folder/index serves folder/index.html
• https://simonw.github.io/playing-with-github-pages/folder/index.html serves folder/index.html
• https://simonw.github.io/playing-with-github-pages/folder/baz serves folder/baz.html
• https://simonw.github.io/playing-with-github-pages/folder/baz.html serves folder/baz.html

I created folder2.html and folder2/index.html:

• https://simonw.github.io/playing-with-github-pages/folder2 serves folder2.html (does not redirect)
• https://simonw.github.io/playing-with-github-pages/folder2/ serves folder2/index.html
• https://simonw.github.io/playing-with-github-pages/folder2/index serves folder2/index.html
• https://simonw.github.io/playing-with-github-pages/folder2/index.html serves folder2/index.html

I also created folder-with-no-index/ without a index.html file:

• https://simonw.github.io/playing-with-github-pages/folder-with-no-index redirects to /folder-with-no-index/
• https://simonw.github.io/playing-with-github-pages/folder-with-no-index/ serves a 404

index.json can act as an index page too:

• https://simonw.github.io/playing-with-github-pages/json redirects to /json/
• https://simonw.github.io/playing-with-github-pages/json/ serves json/index.json
• https://simonw.github.io/playing-with-github-pages/json/index serves a 404
• https://simonw.github.io/playing-with-github-pages/json/index.json serves json/index.json
• https://simonw.github.io/playing-with-github-pages/json/bar serves a 404
• https://simonw.github.io/playing-with-github-pages/json/bar.json serves json/bar.json
• https://simonw.github.io/playing-with-github-pages/json/foo redirects to /json/foo/
• https://simonw.github.io/playing-with-github-pages/json/foo/ serves json/foo/index.json

The existence of the .nojekyll file causes GitHub Pages to publish the raw files without attempting to run Jekyll against them first.