Stable version 0.3.7

This is purely a bugfix bump that compiles on GHC 7.10
and uses a regex lib that doesn't crash on OS X.

README.md

@@ -2,7 +2,7 @@
 
 http://www.shellcheck.net
 
-Copyright 2012-2014, Vidar 'koala_man' Holen
+Copyright 2012-2015, Vidar 'koala_man' Holen
 Licensed under the GNU Affero General Public License, v3
 
 The goals of ShellCheck are:

Setup.hs

@@ -1,2 +1,43 @@
-import Distribution.Simple
-main = defaultMain
+import Distribution.PackageDescription (
+  HookedBuildInfo,
+  emptyHookedBuildInfo )
+import Distribution.Simple (
+  Args,
+  UserHooks ( preSDist ),
+  defaultMainWithHooks,
+  simpleUserHooks )
+import Distribution.Simple.Setup ( SDistFlags )
+
+-- | This requires the process package from,
+--
+--   https://hackage.haskell.org/package/process
+--
+import System.Process ( callCommand )
+
+
+-- | This will use almost the default implementation, except we switch
+--   out the default pre-sdist hook with our own, 'myPreSDist'.
+--
+main = defaultMainWithHooks myHooks
+  where
+    myHooks = simpleUserHooks { preSDist = myPreSDist }
+
+
+-- | This hook will be executed before e.g. @cabal sdist@. It runs
+--   pandoc to create the man page from shellcheck.1.md. If the pandoc
+--   command is not found, this will fail with an error message:
+--
+--     /bin/sh: pandoc: command not found
+--
+--   Since the man page is listed in the Extra-Source-Files section of
+--   our cabal file, a failure here should result in a failure to
+--   create the distribution tarball (that's a good thing).
+--
+myPreSDist :: Args -> SDistFlags -> IO HookedBuildInfo
+myPreSDist _ _ = do
+  putStrLn "Building the man page..."
+  putStrLn pandoc_cmd
+  callCommand pandoc_cmd
+  return emptyHookedBuildInfo
+  where
+    pandoc_cmd = "pandoc -s -t man shellcheck.1.md -o shellcheck.1"

ShellCheck.cabal

@@ -1,5 +1,5 @@
 Name:             ShellCheck
-Version:          0.3.5
+Version:          0.3.7
 Synopsis:         Shell script analysis tool
 License:          AGPL-3
 License-file:     LICENSE
@@ -26,6 +26,8 @@ Extra-Source-Files:
     -- documentation
     README.md
     shellcheck.1.md
+    -- built with a cabal sdist hook
+    shellcheck.1
     -- tests
     test/shellcheck.hs
 
@@ -41,7 +43,7 @@ library
       json,
       mtl,
       parsec,
-      regex-compat,
+      regex-tdfa,
       QuickCheck >= 2.7.4
     exposed-modules:
       ShellCheck.Analytics
@@ -49,6 +51,7 @@ library
       ShellCheck.Data
       ShellCheck.Options
       ShellCheck.Parser
+      ShellCheck.Regex
       ShellCheck.Simple
     other-modules:
       Paths_ShellCheck
@@ -62,7 +65,7 @@ executable shellcheck
       json,
       mtl,
       parsec,
-      regex-compat,
+      regex-tdfa,
       transformers,
       QuickCheck >= 2.7.4
     main-is: shellcheck.hs
@@ -77,7 +80,7 @@ test-suite test-shellcheck
       json,
       mtl,
       parsec,
-      regex-compat,
+      regex-tdfa,
       transformers,
       QuickCheck >= 2.7.4
     main-is: test/shellcheck.hs

ShellCheck/AST.hs

@@ -19,7 +19,7 @@ module ShellCheck.AST where
 
 import Control.Monad
 import Control.Monad.Identity
-import qualified Text.Regex as Re
+import qualified ShellCheck.Regex as Re
 
 data Id = Id Int deriving (Show, Eq, Ord)
 
@@ -28,7 +28,6 @@ data Dashed = Dashed | Undashed deriving (Show, Eq)
 data AssignmentMode = Assign | Append deriving (Show, Eq)
 data FunctionKeyword = FunctionKeyword Bool deriving (Show, Eq)
 data FunctionParentheses = FunctionParentheses Bool deriving (Show, Eq)
-data ForInType = NormalForIn | ShortForIn deriving (Show, Eq)
 data CaseType = CaseBreak | CaseFallThrough | CaseContinue deriving (Show, Eq)
 
 data Token =
@@ -49,7 +48,6 @@ data Token =
     | T_Arithmetic Id Token
     | T_Array Id [Token]
     | T_IndexedElement Id Token Token
-    | T_ Id [Token]
     | T_Assignment Id AssignmentMode String (Maybe Token) Token
     | T_Backgrounded Id Token
     | T_Backticked Id [Token]
@@ -83,7 +81,7 @@ data Token =
     | T_Fi Id
     | T_For Id
     | T_ForArithmetic Id Token Token Token [Token]
-    | T_ForIn Id ForInType [String] [Token] [Token]
+    | T_ForIn Id String [Token] [Token]
     | T_Function Id FunctionKeyword FunctionParentheses String Token
     | T_GREATAND Id
     | T_Glob Id String
@@ -123,16 +121,20 @@ data Token =
     | T_WhileExpression Id [Token] [Token]
     | T_Annotation Id [Annotation] Token
     | T_Pipe Id String
+    | T_CoProc Id (Maybe String) Token
+    | T_CoProcBody Id Token
     deriving (Show)
 
 data Annotation = DisableComment Integer deriving (Show, Eq)
 data ConditionType = DoubleBracket | SingleBracket deriving (Show, Eq)
 
--- I apologize for nothing!
-lolHax s = Re.subRegex (Re.mkRegex "(Id [0-9]+)") (show s) "(Id 0)"
-instance Eq Token where
-    (==) a b = lolHax a == lolHax b
+-- This is an abomination.
+tokenEquals :: Token -> Token -> Bool
+tokenEquals a b = kludge a == kludge b
+    where kludge s = Re.subRegex (Re.mkRegex "\\(Id [0-9]+\\)") (show s) "(Id 0)"
 
+instance Eq Token where
+    (==) = tokenEquals
 
 analyze :: Monad m => (Token -> m ()) -> (Token -> m ()) -> (Token -> Token) -> Token -> m Token
 analyze f g i =
@@ -205,7 +207,7 @@ analyze f g i =
     delve (T_BraceGroup id l) = dl l $ T_BraceGroup id
     delve (T_WhileExpression id c l) = dll c l $ T_WhileExpression id
     delve (T_UntilExpression id c l) = dll c l $ T_UntilExpression id
-    delve (T_ForIn id t v w l) = dll w l $ T_ForIn id t v
+    delve (T_ForIn id v w l) = dll w l $ T_ForIn id v
     delve (T_SelectIn id v w l) = dll w l $ T_SelectIn id v
     delve (T_CaseExpression id word cases) = do
         newWord <- round word
@@ -248,6 +250,8 @@ analyze f g i =
     delve (TA_Expansion id t) = dl t $ TA_Expansion id
     delve (TA_Index id t) = d1 t $ TA_Index id
     delve (T_Annotation id anns t) = d1 t $ T_Annotation id anns
+    delve (T_CoProc id var body) = d1 body $ T_CoProc id var
+    delve (T_CoProcBody id t) = d1 t $ T_CoProcBody id
     delve t = return t
 
 getId t = case t of
@@ -312,7 +316,7 @@ getId t = case t of
         T_BraceGroup id _  -> id
         T_WhileExpression id _ _  -> id
         T_UntilExpression id _ _  -> id
-        T_ForIn id _ _ _ _  -> id
+        T_ForIn id _ _ _  -> id
         T_SelectIn id _ _ _  -> id
         T_CaseExpression id _ _ -> id
         T_Function id _ _ _ _  -> id
@@ -341,6 +345,8 @@ getId t = case t of
         T_DollarBracket id _ -> id
         T_Annotation id _ _ -> id
         T_Pipe id _ -> id
+        T_CoProc id _ _ -> id
+        T_CoProcBody id _ -> id
 
 blank :: Monad m => Token -> m ()
 blank = const $ return ()

ShellCheck/Data.hs

@@ -27,22 +27,10 @@ internalVariables = [
     "LC_MESSAGES", "LC_NUMERIC", "LINES", "MAIL", "MAILCHECK", "MAILPATH",
     "OPTERR", "PATH", "POSIXLY_CORRECT", "PROMPT_COMMAND",
     "PROMPT_DIRTRIM", "PS1", "PS2", "PS3", "PS4", "SHELL", "TIMEFORMAT",
-    "TMOUT", "TMPDIR", "auto_resume", "histchars",
+    "TMOUT", "TMPDIR", "auto_resume", "histchars", "COPROC",
 
-    -- Zsh
-    "ARGV0", "BAUD", "cdpath", "COLUMNS", "CORRECT_IGNORE",
-    "DIRSTACKSIZE", "ENV", "FCEDIT", "fignore", "fpath", "histchars",
-    "HISTCHARS", "HISTFILE", "HISTSIZE", "HOME", "IFS", "KEYBOARD_HACK",
-    "KEYTIMEOUT", "LANG", "LC_ALL", "LC_COLLATE", "LC_CTYPE",
-    "LC_MESSAGES", "LC_NUMERIC", "LC_TIME", "LINES", "LISTMAX",
-    "LOGCHECK", "MAIL", "MAILCHECK", "mailpath", "manpath", "module_path",
-    "NULLCMD", "path", "POSTEDIT", "PROMPT", "PROMPT2", "PROMPT3",
-    "PROMPT4", "prompt", "PROMPT_EOL_MARK", "PS1", "PS2", "PS3", "PS4",
-    "psvar", "READNULLCMD", "REPORTTIME", "REPLY", "reply", "RPROMPT",
-    "RPS1", "RPROMPT2", "RPS2", "SAVEHIST", "SPROMPT", "STTY", "TERM",
-    "TERMINFO", "TIMEFMT", "TMOUT", "TMPPREFIX", "watch", "WATCHFMT",
-    "WORDCHARS", "ZBEEP", "ZDOTDIR", "ZLE_LINE_ABORTED",
-    "ZLE_REMOVE_SUFFIX_CHARS", "ZLE_SPACE_SUFFIX_CHARS"
+    -- Other
+    "USER", "TZ", "TERM"
   ]
 
 variablesWithoutSpaces = [

ShellCheck/Options.hs

@@ -1,6 +1,6 @@
 module ShellCheck.Options where
 
-data Shell = Ksh | Zsh | Sh | Bash
+data Shell = Ksh | Sh | Bash
     deriving (Show, Eq)
 
 data AnalysisOptions = AnalysisOptions {

ShellCheck/Parser.hs

@@ -15,11 +15,12 @@
     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 -}
-{-# LANGUAGE NoMonomorphismRestriction, TemplateHaskell #-}
+{-# LANGUAGE NoMonomorphismRestriction, TemplateHaskell, FlexibleContexts #-}
 module ShellCheck.Parser (Note(..), Severity(..), parseShell, ParseResult(..), ParseNote(..), sortNotes, noteToParseNote, runTests, readScript) where
 
 import ShellCheck.AST
 import ShellCheck.Data
+import ShellCheck.Options
 import Text.Parsec
 import Debug.Trace
 import Control.Monad
@@ -468,14 +469,15 @@ prop_a6 = isOk readArithmeticContents " 1 | 2 ||3|4"
 prop_a7 = isOk readArithmeticContents "3*2**10"
 prop_a8 = isOk readArithmeticContents "3"
 prop_a9 = isOk readArithmeticContents "a^!-b"
-prop_aA = isOk readArithmeticContents "! $?"
-prop_aB = isOk readArithmeticContents "10#08 * 16#f"
-prop_aC = isOk readArithmeticContents "\"$((3+2))\" + '37'"
-prop_aD = isOk readArithmeticContents "foo[9*y+x]++"
-prop_aE = isOk readArithmeticContents "1+`echo 2`"
-prop_aF = isOk readArithmeticContents "foo[`echo foo | sed s/foo/4/g` * 3] + 4"
-prop_a10= isOk readArithmeticContents "$foo$bar"
-prop_a11= isOk readArithmeticContents "i<(0+(1+1))"
+prop_a10= isOk readArithmeticContents "! $?"
+prop_a11= isOk readArithmeticContents "10#08 * 16#f"
+prop_a12= isOk readArithmeticContents "\"$((3+2))\" + '37'"
+prop_a13= isOk readArithmeticContents "foo[9*y+x]++"
+prop_a14= isOk readArithmeticContents "1+`echo 2`"
+prop_a15= isOk readArithmeticContents "foo[`echo foo | sed s/foo/4/g` * 3] + 4"
+prop_a16= isOk readArithmeticContents "$foo$bar"
+prop_a17= isOk readArithmeticContents "i<(0+(1+1))"
+prop_a18= isOk readArithmeticContents "a?b:c"
 readArithmeticContents =
     readSequence
   where
@@ -517,7 +519,7 @@ readArithmeticContents =
             readNormalDollar,
             readBraced,
             readBackTicked,
-            readNormalLiteral "+-*/=%^,]"
+            readNormalLiteral "+-*/=%^,]?:"
             ]
         spacing
         return $ TA_Expansion id pieces
@@ -763,11 +765,10 @@ readDollarBracedLiteral = do
 
 prop_readProcSub1 = isOk readProcSub "<(echo test | wc -l)"
 prop_readProcSub2 = isOk readProcSub "<(  if true; then true; fi )"
-prop_readProcSub3 = isOk readProcSub "=(ls)"
 readProcSub = called "process substitution" $ do
     id <- getNextId
     dir <- try $ do
-                    x <- oneOf "<>="
+                    x <- oneOf "<>"
                     char '('
                     return [x]
     allspacing
@@ -949,7 +950,7 @@ readNormalEscaped = called "escaped char" $ do
     pos <- getPosition
     backslash
     do
-        next <- quotable <|> oneOf "?*@!+[]{}.,"
+        next <- quotable <|> oneOf "?*@!+[]{}.,~#"
         return $ if next == '\n' then "" else [next]
       <|>
         do
@@ -1094,6 +1095,7 @@ readDollarBracket = called "$[..] expression" $ do
     string "]"
     return (T_DollarBracket id c)
 
+prop_readArithmeticExpression = isOk readArithmeticExpression "((a?b:c))"
 readArithmeticExpression = called "((..)) command" $ do
     id <- getNextId
     try (string "((")
@@ -1121,23 +1123,33 @@ readDollarExpansion = called "command expansion" $ do
     return $ T_DollarExpansion id cmds
 
 prop_readDollarVariable = isOk readDollarVariable "$@"
+prop_readDollarVariable2 = isOk (readDollarVariable >> anyChar) "$?!"
+prop_readDollarVariable3 = isWarning (readDollarVariable >> anyChar) "$10"
+prop_readDollarVariable4 = isWarning (readDollarVariable >> string "[@]") "$arr[@]"
+
 readDollarVariable = do
     id <- getNextId
+    pos <- getPosition
+
     let singleCharred p = do
         n <- p
         value <- wrap [n]
-        return (T_DollarBraced id value) `attempting` do
-            pos <- getPosition
-            num <- lookAhead $ many1 p
-            parseNoteAt pos ErrorC 1037 $ "$" ++ (n:num) ++ " is equivalent to ${" ++ [n] ++ "}"++ num ++"."
+        return (T_DollarBraced id value)
+
+    let positional = do
+        value <- singleCharred digit
+        return value `attempting` do
+            lookAhead digit
+            parseNoteAt pos ErrorC 1037 "Braces are required for positionals over 9, e.g. ${10}."
 
-    let positional = singleCharred digit
     let special = singleCharred specialVariable
 
     let regular = do
         name <- readVariableName
         value <- wrap name
-        return $ T_DollarBraced id value
+        return (T_DollarBraced id value) `attempting` do
+            lookAhead $ void (string "[@]") <|> void (string "[*]") <|> void readArrayIndex
+            parseNoteAt pos ErrorC 1087 "Braces are required when expanding arrays, as in ${array[idx]}."
 
     try $ char '$' >> (positional <|> special <|> regular)
 
@@ -1345,7 +1357,6 @@ prop_readSimpleCommand3 = isOk readSimpleCommand "export foo=(bar baz)"
 prop_readSimpleCommand4 = isOk readSimpleCommand "typeset -a foo=(lol)"
 prop_readSimpleCommand5 = isOk readSimpleCommand "time if true; then echo foo; fi"
 prop_readSimpleCommand6 = isOk readSimpleCommand "time -p ( ls -l; )"
-prop_readSimpleCommand7 = isOk readSimpleCommand "cat =(ls)"
 readSimpleCommand = called "simple command" $ do
     id1 <- getNextId
     id2 <- getNextId
@@ -1449,7 +1460,11 @@ readPipe = do
     spacing
     return $ T_Pipe id ('|':qualifier)
 
-readCommand = readCompoundCommand <|> readSimpleCommand
+readCommand = choice [
+    readCompoundCommand,
+    readCoProc,
+    readSimpleCommand
+    ]
 
 readCmdName = do
     f <- readNormalWord
@@ -1617,7 +1632,6 @@ prop_readForClause7 = isOk readForClause "for ((;;)) do echo $i\ndone"
 prop_readForClause8 = isOk readForClause "for ((;;)) ; do echo $i\ndone"
 prop_readForClause9 = isOk readForClause "for i do true; done"
 prop_readForClause10= isOk readForClause "for ((;;)) { true; }"
-prop_readForClause11= isOk readForClause "for a b in *; do echo $a $b; done"
 prop_readForClause12= isWarning readForClause "for $a in *; do echo \"$a\"; done"
 readForClause = called "for loop" $ do
     pos <- getPosition
@@ -1646,25 +1660,10 @@ readForClause = called "for loop" $ do
     readRegular id pos = do
         acceptButWarn (char '$') ErrorC 1086
             "Don't use $ on the iterator name in for loops."
-        names <- readNames
-        readShort names <|> readLong names
-      where
-        readLong names = do
-            values <- readInClause <|> (optional readSequentialSep >> return [])
-            group <- readDoGroup pos
-            return $ T_ForIn id NormalForIn names values group
-        readShort names = do
-            char '('
-            allspacing
-            words <- many (readNormalWord `thenSkip` allspacing)
-            char ')'
-            allspacing
-            command <- readAndOr
-            return $ T_ForIn id ShortForIn names words [command]
-
-    readNames =
-        reluctantlyTill1 (readVariableName `thenSkip` spacing) $
-            disregard g_Do <|> disregard readInClause <|> disregard readSequentialSep
+        name <- readVariableName `thenSkip` spacing
+        values <- readInClause <|> (optional readSequentialSep >> return [])
+        group <- readDoGroup pos
+        return $ T_ForIn id name values group
 
 prop_readSelectClause1 = isOk readSelectClause "select foo in *; do echo $foo; done"
 prop_readSelectClause2 = isOk readSelectClause "select foo; do echo $foo; done"
@@ -1785,7 +1784,31 @@ readFunctionDefinition = called "function" $ do
                 g_Rparen
             return ()
 
-        readFunctionName = many functionChars
+        readFunctionName = many1 functionChars
+
+prop_readCoProc1 = isOk readCoProc "coproc foo { echo bar; }"
+prop_readCoProc2 = isOk readCoProc "coproc { echo bar; }"
+prop_readCoProc3 = isOk readCoProc "coproc echo bar"
+readCoProc = called "coproc" $ do
+    id <- getNextId
+    try $ do
+        string "coproc"
+        whitespace
+    choice [ try $ readCompoundCoProc id, readSimpleCoProc id ]
+  where
+    readCompoundCoProc id = do
+        var <- optionMaybe $
+            readVariableName `thenSkip` whitespace
+        body <- readBody readCompoundCommand
+        return $ T_CoProc id var body
+    readSimpleCoProc id = do
+        body <- readBody readSimpleCommand
+        return $ T_CoProc id Nothing body
+    readBody parser = do
+        id <- getNextId
+        body <- parser
+        return $ T_CoProcBody id body
+
 
 readPattern = (readNormalWord `thenSkip` spacing) `sepBy1` (char '|' `thenSkip` spacing)
 
@@ -1842,6 +1865,7 @@ prop_readAssignmentWord6 = isWarning readAssignmentWord "b += (1 2 3)"
 prop_readAssignmentWord7 = isOk readAssignmentWord "a[3$n'']=42"
 prop_readAssignmentWord8 = isOk readAssignmentWord "a[4''$(cat foo)]=42"
 prop_readAssignmentWord9 = isOk readAssignmentWord "IFS= "
+prop_readAssignmentWord9a= isOk readAssignmentWord "foo="
 prop_readAssignmentWord10= isWarning readAssignmentWord "foo$n=42"
 prop_readAssignmentWord11= isOk readAssignmentWord "foo=([a]=b [c] [d]= [e f )"
 prop_readAssignmentWord12= isOk readAssignmentWord "a[b <<= 3 + c]='thing'"
@@ -1850,25 +1874,23 @@ readAssignmentWord = try $ do
     pos <- getPosition
     optional (char '$' >> parseNote ErrorC 1066 "Don't use $ on the left side of assignments.")
     variable <- readVariableName
-    notFollowedBy2 $ do -- Special case for zsh =(..) syntax
-        spacing1
-        string "=("
     optional (readNormalDollar >> parseNoteAt pos ErrorC
                                 1067 "For indirection, use (associative) arrays or 'read \"var$n\" <<< \"value\"'")
     index <- optionMaybe readArrayIndex
-    space <- spacing
+    hasLeftSpace <- liftM (not . null) spacing
     pos <- getPosition
     op <- readAssignmentOp
-    space2 <- spacing
-    if space == "" && space2 /= ""
+    hasRightSpace <- liftM (not . null) spacing
+    isEndOfCommand <- liftM isJust $ optionMaybe (try . lookAhead $ (disregard (oneOf "\r\n;&|)") <|> eof))
+    if not hasLeftSpace && (hasRightSpace || isEndOfCommand)
       then do
-        when (variable /= "IFS") $
+        when (variable /= "IFS" && hasRightSpace) $
             parseNoteAt pos WarningC 1007
                 "Remove space after = if trying to assign a value (for empty string, use var='' ... )."
         value <- readEmptyLiteral
         return $ T_Assignment id op variable index value
       else do
-        when (space /= "" || space2 /= "") $
+        when (hasLeftSpace || hasRightSpace) $
             parseNoteAt pos ErrorC 1068 "Don't put spaces around the = in assignments."
         value <- readArray <|> readNormalWord
         spacing
@@ -2050,8 +2072,8 @@ readScript = do
     verifyShell pos s =
         case isValidShell s of
             Just True -> return ()
-            Just False -> parseProblemAt pos ErrorC 1071 "ShellCheck only supports Bourne based shell scripts, sorry!"
-            Nothing -> parseProblemAt pos InfoC 1008 "This shebang was unrecognized. Note that ShellCheck only handles Bourne based shells."
+            Just False -> parseProblemAt pos ErrorC 1071 "ShellCheck only supports sh/bash/ksh scripts. Sorry!"
+            Nothing -> parseProblemAt pos InfoC 1008 "This shebang was unrecognized. Note that ShellCheck only handles sh/bash/ksh."
 
     isValidShell s =
         let good = s == "" || any (`isPrefixOf` s) goodShells
@@ -2065,17 +2087,20 @@ readScript = do
 
     goodShells = [
         "sh",
+        "ash",
+        "dash",
         "bash",
-        "ksh",
-        "zsh"
+        "ksh"
         ]
     badShells = [
         "awk",
         "csh",
+        "expect",
         "perl",
         "python",
         "ruby",
-        "tcsh"
+        "tcsh",
+        "zsh"
         ]
 
     readUtf8Bom = called "Byte Order Mark" $ string "\xFEFF"
@@ -2119,13 +2144,13 @@ getStringFromParsec errors =
                 Message s     ->  if null s then Nothing else return $ s ++ "."
         unexpected s = "Unexpected " ++ (if null s then "eof" else s) ++ "."
 
-parseShell filename contents =
+parseShell options filename contents =
     case rp (parseWithNotes readScript) filename contents of
         (Right (script, map, notes), (parsenotes, _)) ->
-            ParseResult (Just (script, map)) (nub $ sortNotes $ notes ++ parsenotes)
+            ParseResult (Just (script, map)) (nub . sortNotes . excludeNotes $ notes ++ parsenotes)
         (Left err, (p, context)) ->
             ParseResult Nothing
-                (nub $ sortNotes $ p ++ notesForContext context ++ [makeErrorFor err])
+                (nub . sortNotes . excludeNotes $ p ++ notesForContext context ++ [makeErrorFor err])
   where
     isName (ContextName _ _) = True
     isName _ = False
@@ -2134,6 +2159,7 @@ parseShell filename contents =
         "Couldn't parse this " ++ str ++ "."
     second (ContextName pos str) = ParseNote pos InfoC 1009 $
         "The mentioned parser error was in this " ++ str ++ "."
+    excludeNotes = filter (\c -> codeForParseNote c `notElem` optionExcludes options)
 
 lt x = trace (show x) x
 ltt t = trace (show t)

ShellCheck/Regex.hs

@@ -0,0 +1,71 @@
+{-
+    This file is part of ShellCheck.
+    http://www.vidarholen.net/contents/shellcheck
+
+    ShellCheck is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ShellCheck is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE FlexibleContexts #-}
+
+-- Basically Text.Regex based on regex-tdfa instead of the buggy regex-posix.
+module ShellCheck.Regex where
+
+import Data.List
+import Data.Maybe
+import Control.Monad
+import Text.Regex.TDFA
+
+-- Precompile the regex
+mkRegex :: String -> Regex
+mkRegex str =
+    let make :: RegexMaker Regex CompOption ExecOption String => String -> Regex
+        make = makeRegex
+    in
+        make str
+
+-- Does the regex match?
+matches :: String -> Regex -> Bool
+matches = flip match
+
+-- Get all subgroups of the first match
+matchRegex :: Regex -> String -> Maybe [String]
+matchRegex re str = do
+    (_, _, _, groups) <- matchM re str :: Maybe (String,String,String,[String])
+    return groups
+
+-- Get all full matches
+matchAllStrings :: Regex -> String -> [String]
+matchAllStrings re = unfoldr f
+  where
+    f :: String -> Maybe (String, String)
+    f str = do
+        (_, match, rest, _) <- matchM re str :: Maybe (String, String, String, [String])
+        return (match, rest)
+
+-- Get all subgroups from all matches
+matchAllSubgroups :: Regex -> String -> [[String]]
+matchAllSubgroups re = unfoldr f
+  where
+    f :: String -> Maybe ([String], String)
+    f str = do
+        (_, _, rest, groups) <- matchM re str :: Maybe (String, String, String, [String])
+        return (groups, rest)
+
+-- Replace regex in input with string
+subRegex :: Regex -> String -> String -> String
+subRegex re input replacement = f input
+  where
+    f str = fromMaybe str $ do
+        (before, match, after) <- matchM re str :: Maybe (String, String, String)
+        when (null match) $ error ("Internal error: substituted empty in " ++ str)
+        return $ before ++ replacement ++ f after

ShellCheck/Simple.hs

@@ -28,7 +28,7 @@ import Text.Parsec.Pos
 
 shellCheck :: AnalysisOptions -> String -> [ShellCheckComment]
 shellCheck options script =
-    let (ParseResult result notes) = parseShell "-" script in
+    let (ParseResult result notes) = parseShell options "-" script in
         let allNotes = notes ++ concat (maybeToList $ do
             (tree, posMap) <- result
             let list = runAnalytics options tree
@@ -72,6 +72,9 @@ prop_commentDisablesAnalysisIssue2 =
 prop_optionDisablesIssue1 =
     null $ shellCheck (defaultAnalysisOptions { optionExcludes = [2086, 2148] }) "echo $1"
 
+prop_optionDisablesIssue2 =
+    null $ shellCheck (defaultAnalysisOptions { optionExcludes = [2148, 1037] }) "echo \"$10\""
+
 return []
 runTests = $quickCheckAll
 

shellcheck.1.md

@@ -16,6 +16,20 @@ errors and pitfalls where the shell just gives a cryptic error message or
 strange behavior, but it also reports on a few more advanced issues where
 corner cases can cause delayed failures.
 
+ShellCheck gives shell specific advice. Consider the line:
+
+    (( area = 3.14*r*r ))
+
++ For scripts starting with `#!/bin/sh` (or when using `-s sh`), ShellCheck
+will warn that `(( .. ))` is not POSIX compliant (similar to checkbashisms).
+
++ For scripts starting with `#!/bin/bash` (or using `-s bash`), ShellCheck
+will warn that decimals are not supported.
+
++ For scripts starting with `#!/bin/ksh` (or using `-s ksh`), ShellCheck will
+not warn at all, as `ksh` supports decimals in arithmetic contexts.
+
+
 # OPTIONS
 
 **-e**\ *CODE1*[,*CODE2*...],\ **--exclude=***CODE1*[,*CODE2*...]
@@ -32,9 +46,9 @@ corner cases can cause delayed failures.
 
 **-s**\ *shell*,\ **--shell=***shell*
 
-:   Specify Bourne shell dialect. Valid values are *sh*, *bash*, *ksh* and
-    *zsh*. The default is to use the file's shebang, or *bash* if the target
-    shell can't be determined.
+:   Specify Bourne shell dialect. Valid values are *sh*, *bash* and *ksh*.
+    The default is to use the file's shebang, or *bash* if the target shell
+    can't be determined.
 
 **-V**\ *version*,\ **--version**
 
@@ -83,11 +97,12 @@ corner cases can cause delayed failures.
 
         [
           {
-            "line": line,
-            "column": column,
-            "level": level,
-            "code": ####,
-            "message": message
+            "file": "filename",
+            "line": lineNumber,
+            "column": columnNumber,
+            "level": "severitylevel",
+            "code": errorCode,
+            "message": "warning message"
           },
           ...
         ]
@@ -104,6 +119,14 @@ For example, to suppress SC2035 about using `./*.jpg`:
     # shellcheck disable=SC2035
     echo "Files: " *.jpg
 
+Here a shell brace group is used to suppress on multiple lines:
+
+    # shellcheck disable=SC2016
+    {
+      echo 'Modifying $PATH'
+      echo 'PATH=foo:$PATH' >> ~/.bashrc
+    }
+
 Valid keys are:
 
 **disable**

shellcheck.hs

@@ -19,6 +19,7 @@ import Control.Exception
 import Control.Monad
 import Control.Monad.Trans
 import Control.Monad.Trans.Error
+import Control.Monad.Trans.List
 import Data.Char
 import Data.Maybe
 import Data.Monoid
@@ -40,6 +41,8 @@ import qualified Data.Map as Map
 data Flag = Flag String String
 data Status = NoProblems | SomeProblems | BadInput | SupportFailure | SyntaxFailure | RuntimeException deriving (Ord, Eq)
 
+data JsonComment = JsonComment FilePath ShellCheckComment
+
 instance Error Status where
     noMsg = RuntimeException
 
@@ -54,7 +57,7 @@ options = [
     Option "f" ["format"]
         (ReqArg (Flag "format") "FORMAT") "output format",
     Option "s" ["shell"]
-        (ReqArg (Flag "shell") "SHELLNAME") "Specify dialect (bash,sh,ksh,zsh)",
+        (ReqArg (Flag "shell") "SHELLNAME") "Specify dialect (bash,sh,ksh)",
     Option "V" ["version"]
         (NoArg $ Flag "version" "true") "Print version information"
     ]
@@ -62,8 +65,9 @@ options = [
 printErr = hPutStrLn stderr
 
 
-instance JSON ShellCheckComment where
-  showJSON c = makeObj [
+instance JSON (JsonComment) where
+  showJSON (JsonComment filename c) = makeObj [
+      ("file", showJSON $ filename),
       ("line", showJSON $ scLine c),
       ("column", showJSON $ scColumn c),
       ("level", showJSON $ scSeverity c),
@@ -152,10 +156,12 @@ forTty options files = do
         term <- hIsTerminalDevice stdout
         return $ if term then colorComment else const id
 
--- This totally ignores the filenames. Fixme?
 forJson :: AnalysisOptions -> [FilePath] -> IO Status
 forJson options files = catchExceptions $ do
-    comments <- liftM concat $ mapM (commentsFor options) files
+    comments <- runListT $ do
+        file <- ListT $ return files
+        comment <- ListT $ commentsFor options file
+        return $ JsonComment file comment
     putStrLn $ encodeStrict comments
     return $ checkComments comments