From 36e47cd9620f76fe2b69b0e2604e5448353b0047 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Fri, 20 Aug 2010 17:23:44 -0400
Subject: [PATCH] Eliminate the last use of regexp-alt-raw and the function
 itself.

---
 nagios-mode.el | 67 ++++++++++++++++++++------------------------------
 1 file changed, 26 insertions(+), 41 deletions(-)

diff --git a/nagios-mode.el b/nagios-mode.el
index 5dd7274..e486edc 100644
--- a/nagios-mode.el
+++ b/nagios-mode.el
@@ -159,26 +159,6 @@
   
 
 
-;; Regular Expression Transformations
-
-(defun regexp-alt-raw(element-list)
-  "Takes a list of elements, and returns the string '\\(element1\\|element2...\\)'"
-  
-  ;; This is necessary since regexp-opt does not accept regular
-  ;; expressions as arguments. We use regexp-opt when we can, of
-  ;; course.
-  
-  (let ((regexp "\\("))
-    (mapcar (lambda(elem)
-	      (setq regexp (concat regexp "\\(" elem "\\)" "\\|")))
-	    element-list)
-    (concat (substring regexp 0 -2) ; Cut the last "\\|"
-	    "\\)")
-    )
-  )
-
-
-
 (defconst nagios-directives
   (eval-when-compile
     (concat "^[ \t\r\n]*"
@@ -669,27 +649,32 @@
 
     (concat "^[ \t\r\n]*"
 
-    (regexp-alt-raw
-     '("define command"
-       "define contact"
-       "define contactgroup"
-       "define host"
-       "define hostdependency"
-       "define hostescalation"
-       "define hostextinfo"
-       "define hostgroup"
-       "define hostgroupescalation"
-       "define null"
-       "define service"
-       "define servicedependency"
-       "define serviceescalation"
-       "define serviceextinfo"
-       "define servicegroup"
-       "define timeperiod"))
-
-    ;; These can be "terminated" by either an opening curly
-    ;; brace, or a space.
-    "\\({\\| \\)")
+	    "\\(" ;; Stick parenthesis around whatever comes out
+	          ;; of regexp-opt. We use this to match a
+	          ;; subexpression during font-lock.
+	    (regexp-opt
+	     '("define command"
+	       "define contact"
+	       "define contactgroup"
+	       "define host"
+	       "define hostdependency"
+	       "define hostescalation"
+	       "define hostextinfo"
+	       "define hostgroup"
+	       "define hostgroupescalation"
+	       "define null"
+	       "define service"
+	       "define servicedependency"
+	       "define serviceescalation"
+	       "define serviceextinfo"
+	       "define servicegroup"
+	       "define timeperiod"))
+	          ;; This closes the parentheses that we opened
+	    "\\)" ;; before regexp-opt.
+
+	    ;; These can be "terminated" by either an opening curly
+	    ;; brace, or a space.
+	    "\\({\\| \\)")
     )
   )
 
-- 
2.43.2