[xmonad] Issue 611 in xmonad: XMonad.Util.Run needs to not encode with recent ghc

[c***@google.com]

Status: New
Owner: ----
Labels: Type-Defect

New issue 611 by ***@gmail.com: XMonad.Util.Run needs to not encode
with recent ghc
https://code.google.com/p/xmonad/issues/detail?id=611

ghc 7.8 (I think; certainly 7.10) and later automatically encode strings
used as command line parameters. XMonad.Util.Run has encoding code intended
for older ghc versions which truncate instead of encoding; this leads to
double encoding.

[c***@google.com]

Comment #1 on issue 611 by ***@gmail.com: XMonad.Util.Run needs to
not encode with recent ghc
https://code.google.com/p/xmonad/issues/detail?id=611

Minimal config to reproduce the issue discussed on IRC (using xmobar).

import XMonad
import XMonad.Hooks.DynamicLog
import XMonad.Hooks.ManageDocks
import XMonad.Util.Run

myLogHook h = dynamicLogWithPP $ xmobarPP
{ ppOutput = hPutStrLn h
}

main :: IO ()
main = do
xmobar <- spawnPipe "xmobar --font='xft:DejaVu Sans Mono,Symbola'
--commands='[Run StdinReader]' -t '%StdinReader%}{😄'"
xmonad $
defaultConfig
{ modMask = mod4Mask
, logHook = myLogHook xmobar
, layoutHook = avoidStruts $ layoutHook defaultConfig
}

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[c***@google.com]

Comment #3 on issue 611 by ***@gmail.com: XMonad.Util.Run needs to
not encode with recent ghc
https://code.google.com/p/xmonad/issues/detail?id=611

That's intentional. I just used an emoji as an example of a character that
is encoded improperly. The issue arises from any multibyte character.