diff --git a/lib/linguist/heuristics.rb b/lib/linguist/heuristics.rb
index 392ab7f5..c512a38e 100644
--- a/lib/linguist/heuristics.rb
+++ b/lib/linguist/heuristics.rb
@@ -181,6 +181,14 @@ module Linguist
       end
     end
 
+    disambiguate "Common Lisp", "NewLisp" do |data|
+      if /^\s*\((defun|in-package|defpackage) /.match(data)
+        Language["Common Lisp"]
+      elsif /^\s*\(define /.match(data)
+        Language["NewLisp"]
+      end
+    end
+
     disambiguate "TypeScript", "XML" do |data|
       if data.include?("<TS ")
         Language["XML"]
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 726ddeb3..f90d472d 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1885,6 +1885,19 @@ NetLogo:
   tm_scope: source.lisp
   ace_mode: lisp
 
+NewLisp:
+  type: programming
+  lexer: NewLisp
+  color: "#eedd66"
+  extensions:
+  - .nl
+  - .lisp
+  - .lsp
+  interpreters:
+  - newlisp
+  tm_scope: source.lisp
+  ace_mode: lisp
+
 Nginx:
   type: markup
   extensions:
diff --git a/samples/Common Lisp/sample.lsp b/samples/Common Lisp/sample.lsp
new file mode 100644
index 00000000..9bef6781
--- /dev/null
+++ b/samples/Common Lisp/sample.lsp	
@@ -0,0 +1,21 @@
+;;;; -*- lisp -*-
+
+(in-package :foo)
+
+;;; Header comment.
+(defvar *foo*)
+
+(eval-when (:execute :compile-toplevel :load-toplevel)
+  (defun add (x &optional y &key z)
+    (declare (ignore z))
+    ;; Inline comment.
+    (+ x (or y 1))))
+
+#|
+Multi-line comment.
+|#
+
+(defmacro foo (x &body b)
+  (if x
+      `(1+ ,x)   ;After-line comment.
+      42))
diff --git a/samples/NewLisp/irc.lsp b/samples/NewLisp/irc.lsp
new file mode 100644
index 00000000..0cac4034
--- /dev/null
+++ b/samples/NewLisp/irc.lsp
@@ -0,0 +1,239 @@
+#!/usr/bin/env newlisp
+
+;; @module IRC
+;; @description a basic irc library
+;; @version early alpha! 0.1 2013-01-02 20:11:22
+;; @author cormullion
+;; Usage:
+;; (IRC:init "newlithper") ; a username/nick (not that one obviously :-)
+;; (IRC:connect "irc.freenode.net" 6667) ; irc/server
+;; (IRC:join-channel {#newlisp}) ; join a room
+;; either (IRC:read-irc-loop) ; loop - monitor only, no input
+;; or     (IRC:session)       ; a command-line session, end with /QUIT
+
+(context 'IRC)
+    (define Inickname)
+    (define Ichannels)
+    (define Iserver)
+    (define Iconnected)
+    (define Icallbacks '())
+    (define Idle-time 400) ; seconds
+    (define Itime-stamp)   ; time since last message was processed
+
+(define (register-callback callback-name callback-function)
+    (println {registering callback for } callback-name { : } (sym (term callback-function) (prefix callback-function)))
+    (push (list callback-name (sym (term callback-function) (prefix callback-function))) Icallbacks)) 
+
+(define (deregister-callback callback-name)
+    (println {deregistering callback for } callback-name)
+    (setf (assoc "idle-event" Icallbacks) nil)
+    (println {current callbacks: } Icallbacks)) 
+
+(define (do-callback callback-name data)
+   (when (set 'func (lookup callback-name Icallbacks)) ; find first callback
+         (if-not (catch (apply func (list data)) 'error)
+                 (println {error in callback } callback-name {: } error))))
+
+(define (do-callbacks callback-name data)
+   (dolist (rf (ref-all callback-name Icallbacks))
+        (set 'callback-entry (Icallbacks (first rf)))
+        (when   (set 'func (last callback-entry))
+                (if-not (catch (apply func (list data)) 'error)
+                (println {error in callback } callback-name {: } error)))))
+
+(define (init str)
+   (set 'Inickname str)
+   (set 'Iconnected nil)
+   (set 'Ichannels '())
+   (set 'Itime-stamp (time-of-day)))
+
+(define (connect server port)
+    (set 'Iserver     (net-connect server port))
+    (net-send Iserver (format "USER %s %s %s :%s\r\n" Inickname Inickname Inickname Inickname))
+    (net-send Iserver (format "NICK %s \r\n" Inickname))
+    (set 'Iconnected true)
+    (do-callbacks "connect" (list (list "server" server) (list "port" port))))
+
+(define (identify password)
+    (net-send Iserver (format "PRIVMSG nickserv :identify %s\r\n" password)))
+
+(define (join-channel channel)
+    (when (net-send Iserver (format "JOIN %s \r\n" channel))
+          (push channel Ichannels)
+          (do-callbacks "join-channel" (list (list "channel" channel) (list "nickname" Inickname)))))
+
+(define (part chan)
+    (if-not (empty? chan)
+        ; leave specified
+        (begin
+            (net-send Iserver (format "PART %s\r\n" chan))
+            (replace channel Ichannels)
+            (do-callbacks "part" (list (list "channel" channel))))
+        ; leave all
+        (begin
+            (dolist (channel Ichannels)
+                (net-send Iserver (format "PART %s\r\n" channel))
+                (replace channel Ichannels)
+                (do-callbacks "part" (list (list "channel" channel)))))))
+
+(define (do-quit message)
+    (do-callbacks "quit" '()) ; chance to do stuff before quit...
+    (net-send Iserver (format "QUIT :%s\r\n" message))
+    (sleep 1000)
+    (set 'Ichannels '())
+    (close Iserver)
+    (set 'Iconnected nil))
+
+(define (privmsg user message)
+    (net-send Iserver (format "PRIVMSG %s :%s\r\n" user message)))
+
+(define (notice user message)
+    (net-send Iserver (format "NOTICE %s :%s\r\n" user message)))
+
+(define (send-to-server message (channel nil))
+    (cond
+        ((starts-with message {/}) ; default command character
+            (set 'the-message (replace "^/" (copy message) {} 0)) ; keep original
+            (net-send Iserver (format "%s \r\n" the-message)) ; send it
+            ; do a quit
+            (if (starts-with (lower-case the-message) "quit")
+                (do-quit { enough})))
+        (true 
+            (if (nil? channel)
+                ; say to all channels
+                (dolist (c Ichannels)
+                        (net-send Iserver (format "PRIVMSG %s :%s\r\n" c message)))
+                ; say to specified channel
+                (if (find channel Ichannels)
+                    (net-send Iserver (format "PRIVMSG %s :%s\r\n" channel message))))))
+    (do-callbacks "send-to-server" (list (list "channel" channel) (list "message" message))))
+
+(define (process-command sender command text)
+    (cond
+        ((= sender "PING")
+            (net-send Iserver (format "PONG %s\r\n" command)))
+        ((or (= command "NOTICE") (= command "PRIVMSG"))
+            (process-message sender command text))
+        ((= command "JOIN")
+            (set 'username (first (clean empty? (parse sender {!|:} 0))))
+            (set 'channel  (last  (clean empty? (parse sender {!|:} 0))))
+            (println {username } username { joined } channel)
+            (do-callbacks "join" (list (list "channel" channel) (list "username" username))))
+        (true
+            nil)))
+
+(define (process-message sender command text)
+    (let ((username {} target {} message {}))
+        (set 'username (first (clean empty? (parse sender {!|:} 0))))
+        (set 'target   (trim  (first (clean empty? (parse text {!|:} 0)))))
+        (set 'message  (slice text (+ (find {:} text) 1)))
+        (cond 
+            ((starts-with message "\001")
+                (process-ctcp username target message))
+            ((find target Ichannels)
+                (cond 
+                    ((= command {PRIVMSG})
+                        (do-callbacks "channel-message" (list (list "channel" target) (list "username" username) (list "message" message))))
+                    ((= command {NOTICE})
+                        (do-callbacks "channel-notice"  (list (list "channel" target) (list "username" username) (list "message" message))))))
+            ((= target Inickname)
+                (cond 
+                    ((= command {PRIVMSG})
+                        (do-callbacks "private-message" (list (list "username" username) (list "message" message))))
+                    ((= command {NOTICE})
+                        (do-callbacks "private-notice"  (list (list "username" username) (list "message" message))))))
+            (true                
+                nil))))
+  
+(define (process-ctcp username target message)
+    (cond
+        ((starts-with message "\001VERSION\001")
+            (net-send Iserver (format "NOTICE %s :\001VERSION %s\001\r\n" username message)))
+        ((starts-with message "\001PING")
+            (set 'data (first (rest (clean empty? (parse message { } 0)))))
+            (set 'data (trim data "\001" "\001"))
+            (net-send Iserver  (format "NOTICE %s :\001PING %s\001\r\n" username data)))
+        ((starts-with message "\001ACTION")
+;            (set 'data (first (rest (clean empty? (parse message { } 0)))))
+;            (set 'data (join data { }))
+;            (set 'data (trim data "\001" "\001"))
+            (if (find target Ichannels)
+                (do-callbacks "channel-action" (list (list "username" username) (list "message" message))))
+            (if (= target Inickname)
+                (do-callbacks "private-action" (list (list "username" username) (list "message" message)))))
+        ((starts-with message "\001TIME\001")
+            (net-send Iserver (format "NOTICE %s:\001TIME :%s\001\r\n" username (date))))))
+
+(define (parse-buffer raw-buffer)
+    (let ((messages (clean empty? (parse raw-buffer "\r\n" 0)))
+          (sender {} command {} text {}))
+        ; check for elapsed time since last activity    
+        (when (> (sub (time-of-day) Itime-stamp) (mul Idle-time 1000))
+              (do-callbacks "idle-event")
+              (set 'Itime-stamp (time-of-day)))
+        (dolist (message messages)
+            (set 'message-parts (parse message { }))           
+            (unless (empty? message-parts)
+                (set 'sender (first message-parts))
+                (catch (set 'command (first (rest message-parts))) 'error)
+                (catch (set 'text (join (rest (rest message-parts)) { })) 'error))
+            (process-command sender command text))))
+
+(define (read-irc)
+    (let ((buffer {}))
+        (when (!= (net-peek Iserver) 0) 
+              (net-receive Iserver buffer 8192 "\n")
+              (unless (empty? buffer)
+                (parse-buffer buffer)))))
+
+(define (read-irc-loop) ; monitoring
+    (let ((buffer {}))       
+        (while Iconnected    
+            (read-irc)
+            (sleep 1000))))
+
+(define (print-raw-message data) ; example of using a callback
+    (set 'raw-data (lookup "message" data))
+    (set 'channel  (lookup "channel" data))
+    (set 'message-text raw-data)
+    (println (date (date-value) 0 {%H:%M:%S }) username {> } message-text))
+
+(define (print-outgoing-message data)
+    (set 'raw-data (lookup "message" data))
+    (set 'channel  (lookup "channel" data))
+    (set 'message-text raw-data)
+    (println (date (date-value) 0 {%H:%M:%S }) Inickname {> } message-text))
+
+(define (session); interactive terminal
+    ; must add callbacks to display messages
+    (register-callback "channel-message" 'print-raw-message)
+    (register-callback "send-to-server"  'print-outgoing-message)
+    (while Iconnected
+        (while (zero? (peek 0))
+            (read-irc)
+            (sleep 1000))
+        (send-to-server (string (read-line 0))))
+    (println {finished session } (date))
+    (exit))
+
+; end of IRC code
+
+[text]
+
+simple bot code:
+(load (string (env {HOME}) {/projects/programming/newlisp-projects/irc.lsp}))
+(context 'BOT)
+(define bot-name "bot")
+(define (join-channel data)
+		(println {in BOT:join-channel with data: } data))
+(define (process-message data)
+        ????)
+(IRC:register-callback "join-channel"    'join-channel) 
+(IRC:register-callback "channel-message" 'process-message)
+(IRC:register-callback "idle-event"      'do-idle-event)
+(IRC:register-callback "send-to-server"  'do-send-event)
+(IRC:init bot-name)
+(IRC:connect "irc.freenode.net" 6667)
+(IRC:join-channel {#newlisp})
+(IRC:read-irc-loop)
+[/text]
\ No newline at end of file
diff --git a/samples/NewLisp/log-to-database.lisp b/samples/NewLisp/log-to-database.lisp
new file mode 100644
index 00000000..60af8406
--- /dev/null
+++ b/samples/NewLisp/log-to-database.lisp
@@ -0,0 +1,195 @@
+(module "sqlite3.lsp") ; loads the SQLite3 database module
+
+; FUNCTIONS-------------------------------------------------
+
+(define (displayln str-to-display)
+ 	(println str-to-display)	
+)
+
+(define (open-database sql-db-to-open)
+	(if (sql3:open (string sql-db-to-open ".db"))  
+		(displayln "")
+		(displayln "There was a problem opening the database " sql-db-to-open ": " (sql3:error))))
+
+(define (close-database)
+	(if (sql3:close)
+		(displayln "")
+		(displayln "There was a problem closing the database: " (sql3:error))))
+
+;====== SAFE-FOR-SQL ===============================================================
+; this function makes strings safe for inserting into SQL statements
+; to avoid SQL injection issues
+; it's simple right now but will add to it later
+;===================================================================================
+(define (safe-for-sql str-sql-query)
+	(if (string? str-sql-query) (begin
+		(replace "&" str-sql-query "&amp;")
+		(replace "'" str-sql-query "&apos;")
+		(replace "\"" str-sql-query "&quot;")
+		))
+		(set 'result str-sql-query))
+
+(define (query sql-text)
+ (set 'sqlarray (sql3:sql sql-text))    ; results of query
+ (if sqlarray
+   (setq query-return sqlarray)
+		(if (sql3:error)
+			(displayln (sql3:error) " query problem ")
+			(setq query-return nil))))
+
+(define-macro (create-record)
+	; first save the values
+	(set 'temp-record-values nil)
+	(set 'temp-table-name (first (args)))
+	;(displayln "<BR>Arguments: " (args))
+	(dolist (s (rest (args))) (push (eval s) temp-record-values -1))
+	; now save the arguments as symbols under the context "DB"
+	(dolist (s (rest (args)))
+		(set 'temp-index-num (string $idx)) ; we need to number the symbols to keep them in the correct order
+		(if (= (length temp-index-num) 1) (set 'temp-index-num (string "0" temp-index-num))) ; leading 0 keeps the max at 100.
+		(sym (string temp-index-num s) 'DB))
+	; now create the sql query 
+	(set 'temp-sql-query (string "INSERT INTO " temp-table-name " ("))
+	;(displayln "<P>TABLE NAME: " temp-table-name)
+	;(displayln "<P>SYMBOLS: " (symbols DB))
+	;(displayln "<BR>VALUES: " temp-record-values)
+	(dolist (d (symbols DB)) (extend temp-sql-query (rest (rest (rest (rest (rest (string d)))))) ", "))
+	(set 'temp-sql-query (chop (chop temp-sql-query)))
+	(extend temp-sql-query ") VALUES (")
+	(dolist (q temp-record-values)
+		(if (string? q) (extend temp-sql-query "'")) ; only quote if value is non-numeric
+		(extend temp-sql-query (string (safe-for-sql q)))
+		(if (string? q) (extend temp-sql-query "'")) ; close quote if value is non-numeric
+		(extend temp-sql-query ", ")) ; all values are sanitized to avoid SQL injection
+	(set 'temp-sql-query (chop (chop temp-sql-query)))
+	(extend temp-sql-query ");")
+	;(displayln "<p>***** SQL QUERY: " temp-sql-query)
+	(displayln (query temp-sql-query)) ; actually run the query against the database
+	(delete 'DB) ; we're done, so delete all symbols in the DB context.
+)	
+
+(define-macro (update-record)
+	; first save the values
+	(set 'temp-record-values nil)
+	(set 'temp-table-name (first (args)))
+	(set 'continue true) ; debugging
+	(dolist (s (rest (args))) (push (eval s) temp-record-values -1))
+	; now save the arguments as symbols under the context "D2"
+	(dolist (st (rest (args)))
+		(set 'temp-index-num (string $idx)) ; we need to number the symbols to keep them in the correct order
+		(if (= (length temp-index-num) 1) (set 'temp-index-num (string "0" temp-index-num))) ; leading 0 keeps the max at 100.
+		;(displayln "<br>SYMBOL>>>>" (string temp-index-num st) "<<<") ; debugging
+		(sym (string temp-index-num st) 'D2)
+	)
+	(if continue (begin ; --- temporary debugging
+	; now create the sql query 
+	(set 'temp-sql-query (string "UPDATE " temp-table-name " SET "))
+	;(displayln "<P>TABLE NAME: " temp-table-name)
+	;(displayln "<P>SYMBOLS: " (symbols D2))
+	;(displayln "<BR>VALUES: " temp-record-values)
+	(dolist (d (rest (symbols D2))) ; ignore the first argument, as it will be the ConditionColumn for later
+		(extend temp-sql-query (rest (rest (rest (rest (rest (string d)))))) "=")
+		(set 'q (temp-record-values (+ $idx 1)))
+		(if (string? q) (extend temp-sql-query "'")) ; only quote if value is non-numeric
+		(extend temp-sql-query (string (safe-for-sql q)))
+		(if (string? q) (extend temp-sql-query "'")) ; close quote if value is non-numeric
+		(extend temp-sql-query ", ") ; all values are sanitized to avoid SQL injection
+	)	
+	(set 'temp-sql-query (chop (chop temp-sql-query)))
+	; okay now add the ConditionColumn value
+	(extend temp-sql-query (string " WHERE " (rest (rest (rest (rest (rest (string (first (symbols D2)))))))) "="))
+	(if (string? (first temp-record-values)) (extend temp-sql-query "'"))
+	(extend temp-sql-query (string (safe-for-sql (first temp-record-values))))
+	(if (string? (first temp-record-values)) (extend temp-sql-query "'"))
+	(extend temp-sql-query ";")
+	;(displayln "<p>***** SQL QUERY: " temp-sql-query)
+	(query temp-sql-query) ; actually run the query against the database
+	(delete 'D2) ; we're done, so delete all symbols in the DB context.
+	)) ; --- end temporary debugging
+)	
+
+(define-macro (delete-record)
+	(set 'temp-table-name (first (args)))
+	(set 'temp-record-values nil)
+	(dolist (s (rest (args))) (push (eval s) temp-record-values -1)) ; only one value for NOW...
+	(sym (first (rest (args))) 'DB) ; put the second argument (for now) into a symbol in the DB context
+												; this will have to be in a dolist loop of (rest (args)) when I add more
+	(set 'temp-sql-query (string "DELETE FROM " temp-table-name " WHERE "))
+	(dolist (d (symbols DB)) (extend temp-sql-query (rest (rest (rest (string d))))))
+	(extend temp-sql-query "=")
+	; why am I doing a loop here?  There should be only one value, right?  But maybe for future extension...
+	(dolist (q temp-record-values)
+		(if (string? q) (extend temp-sql-query "'")) ; only quote if value is non-numeric
+		(extend temp-sql-query (string (safe-for-sql q)))
+		(if (string? q) (extend temp-sql-query "'"))) ; close quote if value is non-numeric
+	(extend temp-sql-query ";")
+	;(displayln "TEMP-DELETE-QUERY: " temp-sql-query)	
+	(query temp-sql-query)
+	(delete 'DB) ; we're done, so delete all symbols in the DB context.
+)
+
+(define-macro (get-record)
+	(set 'temp-table-name (first (args)))
+	; if you have more arguments than just the table name, they become the elements of the WHERE clause
+	(if (> (length (args)) 1) (begin
+		(set 'temp-record-values nil)
+		(dolist (s (rest (args))) (push (eval s) temp-record-values -1)) ; only one value for NOW...
+		(sym (first (rest (args))) 'DB) ; put the second argument (for now) into a symbol in the DB context
+													; this will have to be in a dolist loop of (rest (args)) when I add more
+		(set 'temp-sql-query (string "SELECT * FROM " temp-table-name " WHERE "))
+		(dolist (d (symbols DB)) (extend temp-sql-query (rest (rest (rest (string d))))))
+		(extend temp-sql-query "=")
+		; why am I doing a loop here?  There should be only one value, right?  But maybe for future extension...
+		(dolist (q temp-record-values)
+			(if (string? q) (extend temp-sql-query "'")) ; only quote if value is non-numeric
+			(extend temp-sql-query (string (safe-for-sql q)))
+			(if (string? q) (extend temp-sql-query "'"))) ; close quote if value is non-numeric
+		(extend temp-sql-query ";")
+	)
+		; otherwise, just get everything in that table
+		(set 'temp-sql-query (string "SELECT * FROM " temp-table-name ";"))
+	)
+	;(displayln "TEMP-GET-QUERY: " temp-sql-query)	
+	(delete 'DB) ; we're done, so delete all symbols in the DB context.
+	(set 'return-value (query temp-sql-query)) ; this returns a list of everything in the record
+)
+
+; END FUNCTIONS ===================
+
+
+(open-database "SERVER-LOGS")
+(query "CREATE TABLE Logs (Id INTEGER PRIMARY KEY, IP TEXT, UserId TEXT, UserName TEXT, Date DATE, Request TEXT, Result TEXT, Size INTEGER, Referrer TEXT, UserAgent TEXT)")
+;(print (query "SELECT * from SQLITE_MASTER;"))
+(set 'access-log (read-file "/var/log/apache2/access.log"))
+(set 'access-list (parse access-log "\n"))
+(set 'max-items (integer (first (first (query "select count(*) from Logs")))))
+(println "Number of items in database: " max-items)
+(println "Number of lines in log: " (length access-list))
+(dolist (line access-list)
+	(set 'line-list (parse line))
+	;(println "Line# " $idx " - " line-list)
+	;(println "Length of line: " (length line-list))
+	(if (> (length line-list) 0) (begin
+		(++ max-items)
+		(set 'Id max-items) (print $idx "/" (length access-list))
+		(set 'IP (string (line-list 0) (line-list 1) (line-list 2))) 
+		(set 'UserId (line-list 3))
+		(set 'UserName (line-list 4))
+		(set 'Date (line-list 5))
+		(set 'Date (trim Date "["))
+		(set 'Date (trim Date "]")) 
+		;(println "DATE: " Date) 
+		(set 'date-parsed (date-parse Date "%d/%b/%Y:%H:%M:%S -0700"))
+		;(println "DATE-PARSED: " date-parsed)
+		(set 'Date (date date-parsed 0 "%Y-%m-%dT%H:%M:%S"))
+		(println " " Date)
+		(set 'Request (line-list 6))
+		(set 'Result (line-list 7))
+		(set 'Size (line-list 8))
+		(set 'Referrer (line-list 9))
+		(set 'UserAgent (line-list 10)) 
+		(create-record "Logs" Id IP UserId UserName Date Request Result Size Referrer UserAgent)
+	))
+)
+(close-database)
+(exit)
\ No newline at end of file
diff --git a/test/test_heuristics.rb b/test/test_heuristics.rb
index 785fe58e..b88d0fda 100644
--- a/test/test_heuristics.rb
+++ b/test/test_heuristics.rb
@@ -133,6 +133,13 @@ class TestHeuristcs < Minitest::Test
     })
   end
 
+  def test_lsp_by_heuristics
+    assert_heuristics({
+      "Common Lisp" => all_fixtures("Common Lisp"),
+      "NewLisp" => all_fixtures("NewLisp")
+    })
+  end
+
   def test_cs_by_heuristics
     assert_heuristics({
       "C#" => all_fixtures("C#", "*.cs"),