miniblog.

When a tool supports both regular expressions and literal strings, which should be the default? If you default to regex, users can match more strings than they realise (e.g. `foo.txt`) or less (e.g. `foo(bar)`). I typically see regex as the default, but I prefer the opposite.

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.)

"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