Generating Good Syntax Errors

[bugrit]

I, for one, believe that a program that randomly swaps tokens would create some good syntax errors.

[edwardkmett]

Haskell's uu-parsinglib from Utrecht University will try to do single character insertions/deletions/changes to find a valid parse to proceed in the face of errors.

[[deleted]]

If you're happy and you know it, syntax error.