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Don't suggest removing braces from $((${x+1})) (fixes #1533)

This commit is contained in:
Vidar Holen 2019-05-19 15:29:47 -07:00
parent 52a9d90e1a
commit 8efbecd64a
1 changed files with 2 additions and 1 deletions
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3
src/ShellCheck/Analytics.hs
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@ -1274,11 +1274,12 @@ prop_checkArithmeticDeref12= verify checkArithmeticDeref "for ((i=0; $i < 3; i))
prop_checkArithmeticDeref13= verifyNot checkArithmeticDeref "(( $$ ))"
prop_checkArithmeticDeref14= verifyNot checkArithmeticDeref "(( $! ))"
prop_checkArithmeticDeref15= verifyNot checkArithmeticDeref "(( ${!var} ))"
prop_checkArithmeticDeref16= verifyNot checkArithmeticDeref "(( ${x+1} + ${x=42} ))"
checkArithmeticDeref params t@(TA_Expansion _ [b@(T_DollarBraced id _ _)]) =
unless (isException $ bracedString b) getWarning
where
isException [] = True
isException s = any (`elem` "/.:#%?*@$-!") s || isDigit (head s)
isException s = any (`elem` "/.:#%?*@$-!+=^,") s || isDigit (head s)
getWarning = fromMaybe noWarning . msum . map warningFor $ parents params t
warningFor t =
case t of