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Fixed $(( ! n )) and incorrect warning on $(($?))

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This commit is contained in:
Vidar Holen
2012-11-16 11:07:10 -08:00
parent 900c6d01d4
commit a172c8a8b9
2 changed files with 4 additions and 1 deletions
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3
ShellCheck/Analytics.hs
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@@ -264,7 +264,8 @@ checkDivBeforeMult _ = return ()
prop_checkArithmeticDeref = verify checkArithmeticDeref "echo $((3+$foo))"
prop_checkArithmeticDeref2 = verify checkArithmeticDeref "cow=14; (( s+= $cow ))"
prop_checkArithmeticDeref3 = verifyNot checkArithmeticDeref "cow=1/40; (( s+= ${cow%%/*} ))"
checkArithmeticDeref (TA_Expansion _ (T_DollarBraced id str)) | not $ any (`elem` "/.:#%") $ str =
prop_checkArithmeticDeref4 = verifyNot checkArithmeticDeref "(( ! $? ))"
checkArithmeticDeref (TA_Expansion _ (T_DollarBraced id str)) | not $ any (`elem` "/.:#%?*@") $ str =
warn id $ "Don't use $ on variables in (( )) unless you want to dereference twice"
checkArithmeticDeref _ = return ()

2
ShellCheck/Parser.hs
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@@ -279,6 +279,7 @@ prop_a6 = isOk readArithmeticContents " 1 | 2 ||3|4"
prop_a7 = isOk readArithmeticContents "3*2**10"
prop_a8 = isOk readArithmeticContents "3"
prop_a9 = isOk readArithmeticContents "a^!-b"
prop_aA = isOk readArithmeticContents "! $?"
readArithmeticContents =
readSequence
where
@@ -359,6 +360,7 @@ readArithmeticContents =
readNegated = do
id <- getNextId
op <- oneOf "!~"
spacing
x <- readAnySigned
return $ TA_Unary id [op] x