diff -Nur htdig-3.1.5.orig/htdig/Document.cc htdig-3.1.5.cmg/htdig/Document.cc
--- htdig-3.1.5.orig/htdig/Document.cc	Thu Feb 24 20:29:10 2000
+++ htdig-3.1.5.cmg/htdig/Document.cc	Tue May 29 07:47:24 2001
@@ -28,6 +28,37 @@
 typedef SIG_PF SIGNAL_HANDLER;
 #endif
 
+
+//*****************************************************************************
+// Quick local hack for htdig to recognize mail files
+// This is a utility function for the search options below
+// returns 1 if file is \d+, 0 otherwise
+
+int my_isnum(char *str) {
+    char *p;
+    
+    p = strrchr(str,  '/');
+    
+    if(p == NULL)
+	p = str;
+    else if (*p == '/')
+    {
+        if  (*(p+1) != '\0')
+	    p = p+1;
+        else
+	    return 0;  // the has nothing after / which makes no sense.
+    }
+
+
+    for(p; *p != '\0'; p++)  {
+	if(!isdigit(*p))
+	    return 0;  // not a digit - bail
+    }
+    // yup it was a number
+    return 1;
+}
+
+
 //*****************************************************************************
 // Document::Document(char *u)
 //   Initialize with the given url as the location for this document.
@@ -609,18 +640,24 @@
     // the server's mime.types file).
     // (...and handle a select few other types for now...)
     char *ext = strrchr(*filename, '.');
-    if (ext == NULL)
-      	return Document_not_local;
-    if ((mystrcasecmp(ext, ".html") == 0) || (mystrcasecmp(ext, ".htm") == 0))
-        contentType = "text/html";
-    else if ((mystrcasecmp(ext, ".txt") == 0) || (mystrcasecmp(ext, ".asc") == 0))
-        contentType = "text/plain";
-    else if ((mystrcasecmp(ext, ".pdf") == 0))
-        contentType = "application/pdf";
-    else if ((mystrcasecmp(ext, ".ps") == 0) || (mystrcasecmp(ext, ".eps") == 0))
-        contentType = "application/postscript";
-    else 
-  	return Document_not_local;
+    
+    if (ext == NULL) {
+	 if (my_isnum(*filename))
+ 	    contentType = "text/plain";
+ 	else
+ 	    return Document_not_local;
+     } else {
+ 	if ((mystrcasecmp(ext, ".html") == 0) || (mystrcasecmp(ext, ".htm") == 0))
+ 	    contentType = "text/html";
+ 	else if ((mystrcasecmp(ext, ".txt") == 0) || (mystrcasecmp(ext, ".asc") == 0))
+ 	    contentType = "text/plain";
+ 	else if ((mystrcasecmp(ext, ".pdf") == 0))
+ 	    contentType = "application/pdf";
+ 	else if ((mystrcasecmp(ext, ".ps") == 0) || (mystrcasecmp(ext, ".eps") == 0))
+ 	    contentType = "application/postscript";
+ 	else
+ 	    return Document_not_local;
+     }
 
     // Open it
     FILE *f = fopen(*filename, "r");