A debugger should show you the source code of every method in the stack trace, simultaneously: https://gbracha.blogspot.co.uk/2008/07/debugging-visual-metaphors.html
Related Posts
Are there any package managers that treat changelogs as a first class concept?
I end up looking for a CHANGELOG.md or a CHANGES.txt in the source code repository every time. The lack of standard prevents package hosting services being able to show changes.
On the challenge of writing accurate source spans on Unicode source code: https://reedmullanix.com/posts/unicode-source-spans.html
Also (see footnotes) a fair number of LSP clients assume UTF-8 despite early versions of LSP mandating UTF-16!
I'm trying to decide what program I should show on the home page of my PL.
Hello World is too simple to show much syntax. Fibonacci is OK but the reader may not know what print(fib(10)) should show.
Maybe print(greet("World")) is better? It gives you a function definition at least.