Using icons is Shiny is a mystery for me:
Fontawesome sometimes works, but there is version-confusion and so many of possible free icons are not available. Getting a list of available outcome requires a difficult to find macro and is still an open issue on github.
glyphicons do not render in my app in the current version; the issue is also open on github since 2018.
Joe Cheng mentions the use of a open source icons in package 'icon' which he would prefer to be used. The library looks good, has some mentioning of Shiny, but not a single example and several open issues on how to use is in Shiny
Can anyone provide an example how to use the icons in package 'icon'?