New context var 'local_file' that will point to the on-disk-file that represents the main content of a given page request (if such exists, otherwise it is '' or ()).

Move title extracting functions from sitemap.tpl to werclib.rc.
Rewrite .md title extraction code to only match first lines when 'underlines' with =.

Use the changes above to generate better page titles when possible.

bin/werc.rc

@@ -46,6 +46,7 @@ fn werc_exec_request {
     req_path=`{echo -n $REQUEST_URI | sed 's/\?.*//; s!//+!/!g; s/%5[Ff]/_/g; s/'^$forbidden_uri_chars^'//g; s/\.\.*/./g; 1q'}
     req_url=$base_url^$req_path
     local_path=$sitedir$req_path
+    local_file=''
     ifs='/' { args=`{echo -n $req_path} }
 
     # Preload post args for templates where cgi's stdin is not accessible
@@ -103,14 +104,24 @@ fn werc_exec_request {
             perm_redirect $t
     }
 
+    setup_handlers
+
+
     # Set Page title
-    if(~ $"pageTitle '')
+    if(! ~ $local_file '') {
+        t=`{get_file_title $local_file}
+        if(! ~ $"t '')
+            pageTitle=$t
+    }
+
+    dprint X^$"pageTitle^X
+
+    # XXX Is this never true? because we set pageTitle earlier based on url.
+    if(~ $"pageTitle '') 
         pageTitle=$"siteTitle' '$"siteSubTitle
     if not
         pageTitle=$"pageTitle' | '$"siteTitle' '$"siteSubTitle
 
-    setup_handlers
-
     for(h in $extraHttpHeaders)
         echo $h
     echo 'Content-Type: '^$http_content_type