Decode as UTF-8 in ExitCodeException's Show instance
#89
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Split off of fpco#83. Before, `ProcessConfig`'s `Show` output would include a trailing newline. This has been fixed, so that derived `Show` output does not include newlines in weird places. Before: ghci> data Foo = Foo { a :: Int, b :: ProcessConfig () () (), c :: String } deriving Show ghci> Foo 1 (proc "echo" ["puppy"]) "doggy" Foo {a = 1, b = Raw command: echo puppy , c = "doggy"} After ghci> Foo 1 (proc "echo" ["puppy"]) "doggy" Foo {a = 1, b = Raw command: echo puppy, c = "doggy"} Whitespace for the `ExitCodeException` `Show` instance has also been adjusted, to place the output closer to the relevant headers. Before: ghci> readProcess_ $ proc "sh" ["-c", "echo this is stdout; echo this is stderr >&2; false"] *** Exception: Received ExitFailure 1 when running Raw command: sh -c "echo this is stdout; echo this is stderr >&2; false" Standard output: this is stdout Standard error: this is stderr After: *** Exception: Received ExitFailure 1 when running Raw command: sh -c "echo this is stdout; echo this is stderr >&2; false" Standard output: this is stdout Standard error: this is stderr Note that because trailing whitespace is not accounted for, it is still possible to get unintuitive results depending on what exactly the subprocess prints: ghci> readProcess_ $ proc "sh" ["-c", "echo -n this is stdout; echo -n this is stderr >&2; false"] *** Exception: Received ExitFailure 1 when running Raw command: sh -c "echo -n this is stdout; echo -n this is stderr >&2; false" Standard output: this is stdout Standard error: this is stderr
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Partial fix for fpco#86. This isn't perfect (for retrocomputing you may want another character encoding) but improves the behavior in many circumstances.
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Could you please check whether #87 does what you want regarding UTF-8 decoding when formatting an |
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This PR is a draft which requires #88, let's discuss this PR after that one is closed. |
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I'd prefer to proceed directly to resolving the UTF-8 issue via #87, and would like to confirm you're content with that resolution. |
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Partial fix for #86. This isn't perfect (for retrocomputing you may want another character encoding) but improves the behavior in many circumstances.
Requires #88.