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Better messages for ignored backslashes like 'echo foo\n'

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Vidar Holen 2013-05-13 09:15:45 -07:00
parent 2f21ced552
commit ce0b313b93
1 changed files with 11 additions and 4 deletions
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9
ShellCheck/Parser.hs
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@ -691,8 +691,15 @@ readNormalEscaped = called "escaped char" $ do
<|>
do
next <- anyChar
parseNoteAt pos WarningC $ "Did you mean \"$(printf \"\\" ++ [next] ++ "\")\"? The shell just ignores the \\ here."
case escapedChar next of
Just name -> parseNoteAt pos WarningC $ "\\" ++ [next] ++ " is just literal '" ++ [next] ++ "' here. For " ++ name ++ ", use \"$(printf \"\\" ++ [next] ++ "\")\"."
Nothing -> parseNoteAt pos InfoC $ "This \\" ++ [next] ++ " will be a regular '" ++ [next] ++ "' in this context."
return [next]
where
escapedChar 'n' = Just "line feed"
escapedChar 't' = Just "tab"
escapedChar 'r' = Just "carriage return"
escapedChar _ = Nothing
prop_readExtglob1 = isOk readExtglob "!(*.mp3)"