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One striking downside of string interpolation is that accurate syntax highlighting becomes much harder.
It's very easy to add some form of nesting, which breaks the "simple lexer" approach to highlighting.
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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!
Whilst LLMs don't always give an accurate answer, the UI is really compelling. I keep finding users whose favourite way of doing research is an LLM.
Difftastic does syntax highlighting based on tree-sitter's parse of the *whole file*. It's more accurate than most diffs are able to do.
In this hunk, the opening " of the string literal isn't included, but difftastic still knows that the first lines are from a string.
