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Warn about flipped $ and " in $"(cmd)" (fixes #1517)

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Vidar Holen
2019-03-20 22:10:04 -07:00
parent c53c8a5ead
commit f514f5f735
2 changed files with 15 additions and 0 deletions
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14
src/ShellCheck/Analytics.hs
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@@ -171,6 +171,7 @@ nodeChecks = [
,checkInvertedStringTest
,checkRedirectionToCommand
,checkNullaryExpansionTest
,checkDollarQuoteParen
]
@@ -3169,5 +3170,18 @@ checkNullaryExpansionTest params t =
fix = fixWith [replaceStart id params 0 "-n "]
_ -> return ()
prop_checkDollarQuoteParen1 = verify checkDollarQuoteParen "$\"(foo)\""
prop_checkDollarQuoteParen2 = verify checkDollarQuoteParen "$\"{foo}\""
prop_checkDollarQuoteParen3 = verifyNot checkDollarQuoteParen "\"$(foo)\""
prop_checkDollarQuoteParen4 = verifyNot checkDollarQuoteParen "$\"..\""
checkDollarQuoteParen params t =
case t of
T_DollarDoubleQuoted id ((T_Literal _ (c:_)):_) | c `elem` "({" ->
warnWithFix id 2247 "Flip leading $ and \" if this should be a quoted substitution." (fix id)
_ -> return ()
where
fix id = fixWith [replaceStart id params 2 "\"$"]
return []
runTests = $( [| $(forAllProperties) (quickCheckWithResult (stdArgs { maxSuccess = 1 }) ) |])