Fix #713, actually delete old generated files #714
Merged
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Changes
Fixes #713 - apparently we were trying to delete the short names of old generated files, not their full paths, which wasn't actually deleting anything. Note that #675 is still an issue, where generated files persist from deleted grammars or grammars not included in the build.
Also add a monadic version of
filter
, present in Haskell's standard lib.Documentation
Added a doc comment for
filterM
.