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Warn about string operations on $@/$* (fixes #1236)

This commit is contained in:
Vidar Holen 2018-05-27 12:53:01 -07:00
parent 135cf5932f
commit efffc6150b
1 changed files with 5 additions and 2 deletions
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7
src/ShellCheck/Checks/ShellSupport.hs
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@ -134,6 +134,8 @@ prop_checkBashisms51= verifyNot checkBashisms "#!/bin/sh\ncmd 2>&1"
prop_checkBashisms52= verifyNot checkBashisms "#!/bin/sh\ncmd >&2"
prop_checkBashisms53= verifyNot checkBashisms "#!/bin/sh\nprintf -- -f\n"
prop_checkBashisms54= verify checkBashisms "#!/bin/sh\nfoo+=bar"
prop_checkBashisms55= verify checkBashisms "#!/bin/sh\necho ${@%foo}"
prop_checkBashisms56= verifyNot checkBashisms "#!/bin/sh\necho ${##}"
checkBashisms = ForShell [Sh, Dash] $ \t -> do
params <- ask
kludge params t
@ -295,8 +297,9 @@ checkBashisms = ForShell [Sh, Dash] $ \t -> do
(re $ "^[" ++ varChars ++ "]+\\[.*\\]$", "array references are"),
(re $ "^![" ++ varChars ++ "]+\\[[*@]]$", "array key expansion is"),
(re $ "^![" ++ varChars ++ "]+[*@]$", "name matching prefixes are"),
(re $ "^[" ++ varChars ++ "]+:[^-=?+]", "string indexing is"),
(re $ "^[" ++ varChars ++ "]+(\\[.*\\])?/", "string replacement is")
(re $ "^[" ++ varChars ++ "*@]+:[^-=?+]", "string indexing is"),
(re $ "^([*@][%#]|#[@*])", "string operations on $@/$* are"),
(re $ "^[" ++ varChars ++ "*@]+(\\[.*\\])?/", "string replacement is")
]
bashVars = [
"LINENO", "OSTYPE", "MACHTYPE", "HOSTTYPE", "HOSTNAME",