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Warn about suspicious IFS, such as IFS="\n"

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This commit is contained in:
Vidar Holen 2014-05-10 15:37:02 -07:00
parent 680f838c63
commit c4181d45d2
2 changed files with 23 additions and 1 deletions
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4
ShellCheck/Parser.hs
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@ -965,10 +965,12 @@ readNormalEscaped = called "escaped char" $ do
do
next <- anyChar
case escapedChar next of
Just name -> parseNoteAt pos WarningC 1012 $ "\\" ++ [next] ++ " is just literal '" ++ [next] ++ "' here. For " ++ name ++ ", use \"$(printf \"\\" ++ [next] ++ "\")\"."
Just name -> parseNoteAt pos WarningC 1012 $ "\\" ++ [next] ++ " is just literal '" ++ [next] ++ "' here. For " ++ name ++ ", use " ++ (alternative next) ++ " instead."
Nothing -> parseNoteAt pos InfoC 1001 $ "This \\" ++ [next] ++ " will be a regular '" ++ [next] ++ "' in this context."
return [next]
where
alternative 'n' = "a quoted, literal line feed"
alternative t = "\"$(printf \"\\" ++ [t] ++ "\")\""
escapedChar 'n' = Just "line feed"
escapedChar 't' = Just "tab"
escapedChar 'r' = Just "carriage return"