livid-mode: automatically evaluate JS as you type, as long as it's syntactically valid! https://github.com/pandeiro/livid-mode
Based on the browser-based tools that provide this facility.
miniblog.
Related Posts
Do commas ever appear in idiomatic Clojure? It's syntactically legal but I don't think I've ever seen them in the wild.
Difftastic now handles tab characters precisely! This sounds like a small thing, but it's crucial when parsing Makefile syntax.
Makefiles look way better now.
(Technically tabs are also syntactically significant inside string literals, and that case is fixed too.)
Diff sliders are a really interesting problem for AST diffs. Here's a surprising example.
At first, it looks like the first `|` should be highlighted. However the first `|` is the outer `match` case, and the inner | is syntactically an or-pattern!
