Don't mention arrays in SC2089 in sh/dash (fixes #1014)

src/ShellCheck/Analytics.hs

@@ -1822,12 +1822,16 @@ checkQuotesInLiterals params t =
               && not (isQuoteFree parents expr)
               && not (squashesQuotes expr)
               then [
-                  makeComment WarningC (fromJust assignment) 2089
-                      "Quotes/backslashes will be treated literally. Use an array.",
+                  makeComment WarningC (fromJust assignment) 2089 $
+                      "Quotes/backslashes will be treated literally. " ++ suggestion,
                   makeComment WarningC (getId expr) 2090
                       "Quotes/backslashes in this variable will not be respected."
                 ]
               else [])
+    suggestion =
+        if supportsArrays (shellType params)
+        then "Use an array."
+        else "Rewrite using set/\"$@\" or functions."
 
 
 prop_checkFunctionsUsedExternally1 =

src/ShellCheck/AnalyzerLib.hs

@@ -940,5 +940,7 @@ getOpts flagTokenizer string cmd = process flags
                 more <- process rest2
                 return $ (flag1, token1) : more
 
+supportsArrays shell = shell == Bash || shell == Ksh
+
 return []
 runTests =  $( [| $(forAllProperties) (quickCheckWithResult (stdArgs { maxSuccess = 1 }) ) |])