Not home so I can’t try it but do you need to be so specific to match the whole markdown syntax?

You might be able to get away with

s/#(\w+%20)*\w+\.\w{2,3}/\L&/g; /#(\w+%20)*\w+\.\w{2,3}/ s/%20/-/g

basically, matching #this%20is%20LIKELY%20a%20link.md as opposed to matching whole markdown link

lowercasing that entire match, then on a search matching stuff that looks like that, replace the %20 with a hyphen (combined into a single sed command). this only fails when an http link falls within the same line as a markdown hyperlink

If there is going to be an apk release, will there be support for Android TV as well? Thanks for the hard work!

My first projects were super janky gui stuff that was ported over from Java (very similar syntax, but connected with the visual studio built-in gui editor) and improved to a proper “c#” style using resharper (a jetbrains tool that boosts the capabilities of visual studio) Nowadays you can get a free version of Rider that will include those style tools, so I’d recommend that. But if you use Visual Studio, you can create a Winforms project which can let you drag components to make UI and easily assign code to events. If you are used to raw HTML webpage creation, you might be able to get away with using something like WPF or (cross platform) Avalonia to make a UI, but these are a bit more intense since they use something called the Model-View-Viewmodel framework. It needs you to know how to ‘bind’ variables to events using the observable class, which can be tricky the first few times you use it. I’d look into picking a simple project where you can learn how to use classes effectively (C# is based around Object Oriented Programming much more than bash and self-taught Python would cover). Also would recommend following some of the very simple Unity tutorials to get a handle on the syntax, such as the Unity-made Roll-a-Ball tutorials. These tutorials show the concepts for class-based design and overriding functions.