diff --git a/.gitmodules b/.gitmodules
index 0cc7023..e69de29 100755
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "msgpack-d"]
-	path = msgpack-d
-	url = https://github.com/msgpack/msgpack-d.git
diff --git a/editors/textadept/modules/dmd/init.lua b/editors/textadept/modules/dmd/init.lua
index f74f0a4..e2eefbc 100755
--- a/editors/textadept/modules/dmd/init.lua
+++ b/editors/textadept/modules/dmd/init.lua
@@ -317,7 +317,8 @@ local keywords = {
 
 -- For this module to work the dscanner program must be installed. Configure the
 -- path to the executable here
-M.PATH_TO_DSCANNER = "/home/alaran/src/dscanner/dscanner"
+M.PATH_TO_DSCANNER = "/home/brian/src/dscanner/dscanner"
+M.PATH_TO_DCD_CLIENT = "/home/brian/src/dcd/dcd-client"
 
 _M.textadept.editing.comment_string.dmd = '//'
 _M.textadept.run.compile_command.dmd = 'dmd -c -o- %(filename)'
@@ -341,7 +342,7 @@ local function showCompletionList(r)
 	buffer.auto_c_choose_single = false;
 	buffer.auto_c_max_width = 0
 	local completions = {}
-	for symbol, kind in r:gmatch("([@%w_]+) (%a)\n") do
+	for symbol, kind in r:gmatch("([@%w_]+)\t(%a)\n") do
 		completion = symbol
 		if kind == "k" then
 			completion = completion .. "?5"
@@ -368,34 +369,25 @@ local function showCompletionList(r)
 	buffer.auto_c_choose_single = setting
 end
 
---events.connect(events.CHAR_ADDED, function(ch)
---	if buffer:get_lexer() ~= "dmd" then return end
---	if ch > 255 then return end
---	local character = string.char(ch)
---	if character == "." or character == "(" then
---		local fileName = os.tmpname()
---		local tmpFile = io.open(fileName, "w")
---		tmpFile:write(buffer:get_text())
---		local command = M.PATH_TO_DSCANNER
---			.. (character == "." and " --dotComplete " or " --parenComplete ")
---			.. fileName .. " " .. buffer.current_pos .. " -I" .. buffer.filename:match(".+[\\/]")
---		local p = io.popen(command)
---		local r = p:read("*a")
---		if r ~= "\n" then
---			if character == "." then
---				showCompletionList(r)
---			elseif character == "(" then
---				if r:find("^completions\n") then
---					showCompletionList(r)
---				elseif r:find("^calltips\n.*") then
---					r = r:gsub("^calltips\n", "")
---					buffer:call_tip_show(buffer.current_pos, r:gsub("\\n", "\n"):gsub("\\t", "\t"):match("(.*)%s+$"))
---				end
---			end
---		end
---		os.remove(fileName)
---	end
---end)
+events.connect(events.CHAR_ADDED, function(ch)
+	if buffer:get_lexer() ~= "dmd" then return end
+	if ch > 255 then return end
+	local character = string.char(ch)
+	if character == "." or character == "(" then
+		local fileName = os.tmpname()
+		local tmpFile = io.open(fileName, "w")
+		tmpFile:write(buffer:get_text())
+		local command = M.PATH_TO_DCD_CLIENT .. " -c" .. buffer.current_pos
+            .. " " .. fileName
+        print(command)
+		local p = io.popen(command)
+		local r = p:read("*a")
+		if r ~= "\n" then
+            showCompletionList(r)
+		end
+		os.remove(fileName)
+	end
+end)
 
 events.connect(events.FILE_AFTER_SAVE, function()
 	if buffer:get_lexer() ~= "dmd" then return end
@@ -406,18 +398,20 @@ events.connect(events.FILE_AFTER_SAVE, function()
 	for line in p:lines() do
 		lineNumber, column, level, message = string.match(line, "^.-%((%d+):(%d+)%)%[(%w+)%]: (.+)$")
 		local l = tonumber(lineNumber) - 1
-		local c = tonumber(column)
-		if level == "error" then
-			buffer.annotation_style[l] = 8
-		else
-			buffer.annotation_style[l] = 2
-		end
-		local t = buffer.annotation_text[l]
-		if #t > 0 then
-			buffer.annotation_text[l] = buffer.annotation_text[l] .. "\n" .. message
-		else
-			buffer.annotation_text[l] = message
-		end
+        if l >= 0 then
+            local c = tonumber(column)
+            if level == "error" then
+                buffer.annotation_style[l] = 8
+            else
+                buffer.annotation_style[l] = 2
+            end
+            local t = buffer.annotation_text[l]
+            if #t > 0 then
+                buffer.annotation_text[l] = buffer.annotation_text[l] .. "\n" .. message
+            else
+                buffer.annotation_text[l] = message
+            end
+        end
 	end
 end)
 
diff --git a/main.d b/main.d
index bcab299..b431c3c 100755
--- a/main.d
+++ b/main.d
@@ -40,40 +40,40 @@ int main(string[] args)
 		getopt(args, "I", &importDirs, "sloc|l", &sloc,
 			"json|j", &json, "highlight", &highlight,
 			"ctags|c", &ctags, "recursive|r|R", &recursive, "help|h", &help,
-			"tokenCount", &tokenCount, "syntaxCheck", &syntaxCheck);
+			"tokenCount", &tokenCount, "syntaxCheck|s", &syntaxCheck);
 	}
 	catch (Exception e)
 	{
 		stderr.writeln(e.msg);
 	}
 
-    if (help)
-    {
-        printHelp(args[0]);
-        return 0;
-    }
+	if (help)
+	{
+		printHelp(args[0]);
+		return 0;
+	}
 
-    auto optionCount = count!"a"([sloc, highlight, ctags, json, tokenCount,
+	auto optionCount = count!"a"([sloc, highlight, ctags, json, tokenCount,
 		syntaxCheck]);
-    if (optionCount > 1)
-    {
-        stderr.writeln("Too many options specified");
-        return 1;
-    }
-    else if (optionCount < 1)
-    {
-        printHelp(args[0]);
-        return 1;
-    }
+	if (optionCount > 1)
+	{
+		stderr.writeln("Too many options specified");
+		return 1;
+	}
+	else if (optionCount < 1)
+	{
+		printHelp(args[0]);
+		return 1;
+	}
 
-    if (highlight)
+	if (highlight)
 	{
 		LexerConfig config;
 		config.iterStyle = IterationStyle.everything;
 		config.tokenStyle = TokenStyle.source;
-        File f = args.length == 1 ? stdin : File(args[1]);
-        ubyte[] buffer = uninitializedArray!(ubyte[])(f.size);
-        highlighter.highlight(byToken(f.rawRead(buffer), config),
+		File f = args.length == 1 ? stdin : File(args[1]);
+		ubyte[] buffer = uninitializedArray!(ubyte[])(f.size);
+		highlighter.highlight(byToken(f.rawRead(buffer), config),
 			args.length == 1 ? "stdin" : args[1]);
 		return 0;
 	}
@@ -85,7 +85,6 @@ int main(string[] args)
 		config.fileName = usingStdin ? "stdin" : args[1];
 		File f = usingStdin ? stdin : File(args[1]);
 		auto bytes = usingStdin ? cast(ubyte[]) [] : uninitializedArray!(ubyte[])(f.size);
-		auto byteCount = f.size;
 		f.rawRead(bytes);
 
 		auto tokens = byToken(bytes, config);
@@ -140,6 +139,10 @@ options:
         well as any paths specified in /etc/dmd.conf. This is only used for the
         --parenComplete and --dotComplete options.
 
+    --syntaxCheck | -s [sourceFile]
+        Lexes and parses sourceFile, printing the line and column number of any
+        syntax errors to stdout. One error or warning is printed per line.
+
     --ctags | -c sourceFile
         Generates ctags information from the given source code file. Note that
         ctags information requires a filename, so stdin cannot be used in place
@@ -147,6 +150,7 @@ options:
 
     --recursive | -R | -r directory
         When used with --ctags, dscanner will produce ctags output for all .d
-        and .di files contained within directory and its sub-directories.`,
+        and .di files contained within the given directory and its
+        sub-directories.`,
         programName);
 }
diff --git a/std/d/lexer.d b/std/d/lexer.d
index 6b07f57..7d47f7c 100755
--- a/std/d/lexer.d
+++ b/std/d/lexer.d
@@ -190,6 +190,13 @@ struct Token
         if (startIndex > other.startIndex) return 1;
         return 0;
     }
+
+    int opCmp(size_t index) const nothrow pure
+    {
+        if (startIndex < index) return -1;
+        if (startIndex > index) return 1;
+        return 0;
+    }
 }
 
 /**
diff --git a/std/d/parser.d b/std/d/parser.d
index c2df671..f277fc5 100755
--- a/std/d/parser.d
+++ b/std/d/parser.d
@@ -82,6 +82,9 @@ import std.string : format;
 /**
  * Params:
  *     tokens = the tokens parsed by std.d.lexer
+ *     messageFunction = a function to call on error or warning messages.
+ *         The parameters are the file name, line number, column number,
+ *         and the error or warning message.
  * Returns: the parsed module
  */
 Module parseModule(const(Token)[] tokens, string fileName,
@@ -4117,9 +4120,15 @@ q{(int a, ...)
             if (currentIsOneOf(stringLiteral, wstringLiteral, dstringLiteral))
             {
                 node.primary = advance();
+                bool alreadyWarned = false;
                 while (currentIsOneOf(stringLiteral, wstringLiteral,
                     dstringLiteral))
                 {
+                    if (!alreadyWarned)
+                    {
+                        warn("Implicit concatenation of string literals");
+                        alreadyWarned = true;
+                    }
                     node.primary.value ~= advance().value;
                 }
             }
@@ -5913,7 +5922,9 @@ q{doStuff(5)}c;
     string fileName;
 
     /**
-     * Function that is called when a warning or error is encountered
+     * Function that is called when a warning or error is encountered.
+     * The parameters are the file name, line number, column number,
+     * and the error or warning message.
      */
     void function(string, int, int, string) messageFunction;