diff -Naur asterisk/ast_expr.y asterisk_regexp_patch/ast_expr.y
--- asterisk/ast_expr.y	2004-05-03 20:23:35.000000000 -0700
+++ asterisk_regexp_patch/ast_expr.y	2004-06-07 20:11:00.000000000 -0700
@@ -175,6 +175,7 @@
 	struct val *vp;
 	size_t i;
 	int isint;
+	char* p;
 
 	vp = (struct val *) malloc (sizeof (*vp));
 	if (vp == NULL || ((vp->u.s = strdup (s)) == NULL)) {
@@ -182,12 +183,26 @@
 		return(NULL);
 	}
 
+	i = 0;
+	for( p=s; *p; p++ ) {
+		if( *p=='\\' ) {
+			p++;
+			if( *p==0 ) {
+				/* Slash before the end of the string */
+				vp->u.s[i++] = '\\';
+				break;
+			}
+ 		}
+		vp->u.s[i++] = *p;
+	}
+	vp->u.s[i++] = 0;
+
 	for(i = 1, isint = isdigit(s[0]) || s[0] == '-';
 	    isint && i < strlen(s);
 	    i++)
 	{
 		if(!isdigit(s[i]))
-			 isint = 0;
+			isint = 0;
 	}
 
 	if (isint)
@@ -304,8 +319,15 @@
 	{
 		/* opening quote. find the closing quote */
 		char *t2=t1+1;
-		while( *t2 && *t2 != '"')
-			t2++;
+		while( *t2 && *t2 != '"') {
+		  /* Watch for escape slashes */
+		  if( *t2=='\\' ) {
+		    t2++;
+		    if( !*t2 )
+		      break;
+		  }
+		  t2++;
+		}
 		if( *t2 == '"' )
 		{
 			if( *(t2+1) == ' ' || *(t2+1) == 0 )
@@ -826,7 +848,7 @@
 	to_string(b);
 
 	/* compile regular expression */
-	if ((eval = regcomp (&rp, b->u.s, 0)) != 0) {
+	if ((eval = regcomp (&rp, b->u.s, REG_EXTENDED)) != 0) {
 		regerror (eval, &rp, errbuf, sizeof(errbuf));
 		ast_log(LOG_WARNING,"regcomp() error : %s",errbuf);
 		free_value(a);
diff -Naur asterisk/pbx.c asterisk_regexp_patch/pbx.c
--- asterisk/pbx.c	2004-05-26 12:24:47.000000000 -0700
+++ asterisk_regexp_patch/pbx.c	2004-06-07 20:10:51.000000000 -0700
@@ -795,6 +795,18 @@
 			/* length is zero */
 			*ret = "0";
 		}
+	} else if (!strncasecmp(var,"ESCAPEQUOTES(",7)) {
+		int escapequotes_len = 13;
+		char* p;
+		int n = 0;
+		/* Scan until the end of string or ) */
+		for( p=var+escapequotes_len; *p && (*p!=')'); p++ ) {
+			if( *p=='"' ) {
+				workspace[n++] = '\\';
+			}
+			workspace[n++] = *p;
+		}
+		*ret = workspace;
 	} else if ((first=strchr(var,':'))) {
 		strncpy(tmpvar, var, sizeof(tmpvar) - 1);
 		first = strchr(tmpvar, ':');