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authorYuji Yamamoto <whosekiteneverfly@gmail.com>2017-07-04 23:13:12 +0900
committerAlex Biehl <alexbiehl@gmail.com>2017-07-04 16:13:12 +0200
commit22cbf4d9509d3b537e6c2fcf4c95ae73d930b9aa (patch)
treef6dbab9928bdcc3c59838df99e05b9040918b321 /html-test/src/Bug308CrossModule.hs
parent58edf9f5757daadeeaa7879785c48363fa154996 (diff)
Avoid errors on non UTF-8 Windows (#566)
* Avoid errors on non UTF-8 Windows Problem ==== haddock exits with errors like below: `(1)` ``` haddock: internal error: <stderr>: hPutChar: invalid argument (invalid character) ``` `(2)` ``` haddock: internal error: Language\Haskell\HsColour\Anchors.hs: hGetContents: invalid argument (invalid byte sequence) ``` `(1)` is caused by printing [the "bullet" character](http://www.fileformat.info/info/unicode/char/2022/index.htm) onto stderr. For example, this warning contains it: ``` Language\Haskell\HsColour\ANSI.hs:62:10: warning: [-Wmissing-methods] • No explicit implementation for ‘toEnum’ • In the instance declaration for ‘Enum Highlight’ ``` `(2)` is caused when the input file of `readFile` contains some Unicode characters. In the case above, '⇒' is the cause. Environment ---- OS: Windows 10 haddock: 2.17.3 GHC: 8.0.1 Solution ==== Add `hSetEncoding handle utf8` to avoid the errors. Note ==== - I found the detailed causes by these changes for debugging: - https://github.com/haskell/haddock/commit/8f29edb6b02691c1cf4c479f6c6f3f922b35a55b - https://github.com/haskell/haddock/commit/1dd23bf2065a1e1f2c14d0f4abd847c906b4ecb4 - These errors happen even after executing `chcp 65001` on the console. According to the debug code, `hGetEncoding stderr` returns `CP932` regardless of the console encoding. * Avoid 'internal error: <stderr>: hPutChar: invalid argument (invalid character)' non UTF-8 Windows Better solution for 59411754a6db41d17820733c076e6a72bcdbd82b's (1)
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