Fix several hlint issues related with the use of parsed module without comments #2366
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The plugin was not using the
getParsedModuleWithCommentsso it was missing all info encoded in comments: pragmas, directives, etc and causing several issuesFixes HLint plugin ignores "ignore"s defined as {-# HLINT ... -#} annotations #638
Fixes HLint doesn't report "Unused LANGUAGE pragma" #2042
Fixes HLint reports incorrect redundant irrefutable pattern #2280
I was suspecting this so i added the regression tests in #2321 with the intent of fixing them in a ongoing pr, this one.
(I've included a minor correction of bullet lists suggested by markdown linting)