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detect parse failure where command is somehow empty (wtf?)

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Joey Hess 2013-12-09 15:17:55 -04:00
parent 90d4ada06e
commit d5981949e0
1 changed files with 3 additions and 1 deletions
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4
Build/EvilLinker.hs
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@ -124,13 +124,15 @@ runParser' p s paramfile = either failedparse id (parse p "" s)
failedparse e = error $
(show e) ++
"\n<<<\n" ++ s ++ "\n>>>" ++
"\nparam file contained: <<<\n" ++ paramfile ++ "\n>>>"
"\nparam file contained: >>>\n" ++ paramfile ++ "\n<<<"
atFile :: FilePath -> String
atFile f = '@':f
runAtFile :: Parser CmdParams -> String -> FilePath -> [String] -> IO (String, Bool)
runAtFile p s f extraparams = do
when (null $ opts c) $
error $ "failed to find any options for " ++ f ++ " in >>>" ++ s ++ "<<<"
writeFile f (opts c)
out <- getOutput (cmd c) (atFile f:extraparams) (env c)
removeFile f