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Consider ${foo:=bar} an assignment.

This commit is contained in:
Vidar Holen 2016-09-24 19:01:13 -07:00
parent cd4896192c
commit 4fc4899803
2 changed files with 7 additions and 0 deletions
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1
ShellCheck/Analytics.hs
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@ -2139,6 +2139,7 @@ prop_checkUnassignedReferences23= verifyTree checkUnassignedReferences "declare
prop_checkUnassignedReferences24= verifyNotTree checkUnassignedReferences "declare -A foo; foo[bar]=42;"
prop_checkUnassignedReferences25= verifyNotTree checkUnassignedReferences "declare -A foo=(); foo[bar]=42;"
prop_checkUnassignedReferences26= verifyNotTree checkUnassignedReferences "a::b() { foo; }; readonly -f a::b"
prop_checkUnassignedReferences27= verifyNotTree checkUnassignedReferences ": ${foo:=bar}"
checkUnassignedReferences params t = warnings
where
(readMap, writeMap) = execState (mapM tally $ variableFlow params) (Map.empty, Map.empty)

6
ShellCheck/AnalyzerLib.hs
View File

@ -334,6 +334,12 @@ getModifiedVariables t =
name <- getLiteralString lhs
return (t, t, name, DataString $ SourceFrom [rhs])
T_DollarBraced _ l -> maybeToList $ do
let string = bracedString t
let modifier = getBracedModifier string
guard $ ":=" `isPrefixOf` modifier
return (t, t, getBracedReference string, DataString $ SourceFrom [l])
t@(T_FdRedirect _ ('{':var) op) -> -- {foo}>&2 modifies foo
[(t, t, takeWhile (/= '}') var, DataString SourceInteger) | not $ isClosingFileOp op]