"After I linked difftastic, one of my friends immediately used difftastic to find a stealthy bug, five stars!"
https://www.scannedinavian.com/tools-built-on-tree-sitters-concrete-syntax-trees.html
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Difftastic has been cited in a paper!
Modernizing SMT-Based Type Error Localization https://arxiv.org/abs/2408.09034
The authors use difftastic to work out which parts of a buggy program have actually changed, a great use case :)
Ooh, difftastic is now listed on the official git website! https://git-scm.com/tools/command-line
What are the most popular languages that have used an AST walker for their implementation?
I know Ruby used to do this, but there must be others.
(I'm interested in the lowest PL speed that users will tolerate if you have awesome features.)