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Make read accepts binary integer literal

SoonWon Moon requested to merge damhiya/ghc:read-binary-integer-literal into master

Thank you for your contribution to GHC!

Please read the checklist below to make sure your contribution fulfills these expectations. Also please answer the following question in your MR description:

Where is the key part of this patch? That is, what should reviewers look at first? See libraries/base/Text/Read/Lex.hs

CLC proposal : https://github.com/haskell/core-libraries-committee/issues/177

Resolves #23518 (closed).

Please take a few moments to address the following points:

  • if your MR may break existing programs (e.g. touches base or causes the compiler to reject programs), please describe the expected breakage and add the ~"user facing" label. This will run ghc/head.hackage> to characterise the effect of your change on Hackage.
  • ensure that your commits are either individually buildable or squashed
  • ensure that your commit messages describe what they do (referring to tickets using #NNNN syntax when appropriate)
  • have added source comments describing your change. For larger changes you likely should add a Note and cross-reference it from the relevant places.
  • add a testcase to the testsuite.
  • updates the users guide if applicable
  • mentions new features in the release notes for the next release
Edited by Bodigrim

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