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Suppress SC2119/SC2120 for ${1:-default} (fixes #2023)

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Vidar Holen 2025-04-08 20:52:52 -07:00
parent c553288085
commit 7fc992d0dc
1 changed files with 20 additions and 1 deletions
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21
src/ShellCheck/Analytics.hs
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@ -2825,6 +2825,8 @@ prop_checkUnpassedInFunctions11 = verifyNotTree checkUnpassedInFunctions "foo()
prop_checkUnpassedInFunctions12 = verifyNotTree checkUnpassedInFunctions "foo() { echo ${!var*}; }; foo;"
prop_checkUnpassedInFunctions13 = verifyNotTree checkUnpassedInFunctions "# shellcheck disable=SC2120\nfoo() { echo $1; }\nfoo\n"
prop_checkUnpassedInFunctions14 = verifyTree checkUnpassedInFunctions "foo() { echo $#; }; foo"
prop_checkUnpassedInFunctions15 = verifyNotTree checkUnpassedInFunctions "foo() { echo ${1-x}; }; foo"
prop_checkUnpassedInFunctions16 = verifyNotTree checkUnpassedInFunctions "foo() { echo ${1:-x}; }; foo"
checkUnpassedInFunctions params root =
execWriter $ mapM_ warnForGroup referenceGroups
where
@ -2841,9 +2843,10 @@ checkUnpassedInFunctions params root =
case x of
Assignment (_, _, str, _) -> isPositional str
_ -> False
isPositionalReference function x =
case x of
Reference (_, t, str) -> isPositional str && t `isDirectChildOf` function
Reference (_, t, str) -> isPositional str && t `isDirectChildOf` function && not (hasDefaultValue t)
_ -> False
isDirectChildOf child parent = fromMaybe False $ do
@ -2857,6 +2860,7 @@ checkUnpassedInFunctions params root =
referenceList :: [(String, Bool, Token)]
referenceList = execWriter $
doAnalysis (sequence_ . checkCommand) root
checkCommand :: Token -> Maybe (Writer [(String, Bool, Token)] ())
checkCommand t@(T_SimpleCommand _ _ (cmd:args)) = do
str <- getLiteralString cmd
@ -2867,6 +2871,21 @@ checkUnpassedInFunctions params root =
isPositional str = str == "*" || str == "@" || str == "#"
|| (all isDigit str && str /= "0" && str /= "")
-- True if t is a variable that specifies a default value,
-- such as ${1-x} or ${1:-x}.
hasDefaultValue t =
case t of
T_DollarBraced _ True l ->
let str = concat $ oversimplify l
in isDefaultValueModifier $ getBracedModifier str
_ -> False
isDefaultValueModifier str =
case str of
'-':_ -> True
':':'-':_ -> True
_ -> False
isArgumentless (_, b, _) = b
referenceGroups = Map.elems $ foldr updateWith Map.empty referenceList
updateWith x@(name, _, _) = Map.insertWith (++) name [x]