I am developing an extension for VS Code and contributing to seti-ui is currently the only way to add an icon for new filetypes (apart from creating a complete icon set). So I really hope that you will accept this pull request, even if Argdown is currently only a small academic language used mainly by philosophy students and teachers in logic courses.
Argdown is an argumentation syntax inspired by Markdown. See http://christianvoigt.github.io/argdown/
I am developing an extension for VS Code and contributing to seti-ui is currently the only way to add an icon for new filetypes (apart from creating a complete icon set). So I really hope that you will accept this pull request, even if Argdown is currently only a small academic language used mainly by philosophy students and teachers in logic courses.