github-linguist/linguist

Alex and Happy

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#5822 aperta il 14 mar 2022

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Descrizione

Previous discussions: #2446 #4302

Alex and Happy are lexer and parser generators (respectively) for Haskell, based on Lex and Yacc for C. They also share extensions with Lex and Yacc, and as such are misclassified as them currently:

~200 Alex files misclassified as Lex ~1250 Happy files misclassified as Yacc

Additionally, #4952 introduced an Alex file as a sample file for Lex, which is incorrect.

Below are the templates for both Alex and Happy. The reason this is an issue and not a PR is that I'm not aware of any TextMate grammars for either of them. Currently however they are using Lex and Yacc's grammars, which result in nonsense highlighting. If they can be added without having grammars I can open a PR for them.


Language name

Alex

URL of example repository

https://github.com/haskell/alex/blob/master/src/Scan.x

Most popular extensions

  • .x

Detected language

  • Lex
  • Logos

Language name

Happy

URL of example repository

https://github.com/haskell/alex/blob/master/src/Parser.y

Most popular extensions

  • .y

Detected language

  • Yacc

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