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Use null instead of comparing with empty lists

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This commit is contained in:
Joseph C. Sible 2020-02-01 22:50:21 -05:00
parent e6e89d68fd
commit c29b6afa56
5 changed files with 14 additions and 14 deletions
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6
src/ShellCheck/Checks/Commands.hs
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@ -345,7 +345,7 @@ returnOrExit multi invalid = (f . arguments)
invalid (getId value)
f _ = return ()
isInvalid s = s == "" || any (not . isDigit) s || length s > 5
isInvalid s = null s || any (not . isDigit) s || length s > 5
|| let value = (read s :: Integer) in value > 255
literal token = fromJust $ getLiteralStringExt lit token
@ -706,7 +706,7 @@ checkReadExpansions = CommandCheck (Exactly "read") check
options = getGnuOpts flagsForRead
getVars cmd = fromMaybe [] $ do
opts <- options cmd
return [y | (x,y) <- opts, x == "" || x == "a"]
return [y | (x,y) <- opts, null x || x == "a"]
check cmd = mapM_ warning $ getVars cmd
warning t = potentially $ do
@ -1057,7 +1057,7 @@ checkSudoRedirect = CommandCheck (Basename "sudo") f
Just (T_Redirecting _ redirs _) ->
mapM_ warnAbout redirs
warnAbout (T_FdRedirect _ s (T_IoFile id op file))
| (s == "" || s == "&") && not (special file) =
| (null s || s == "&") && not (special file) =
case op of
T_Less _ ->
info (getId op) 2024