Index: /Users/andrew/Documents/workspace/pinchin/sites/default/modules/custom_breadcrumbs/custom_breadcrumbs.install
===================================================================
--- /Users/andrew/Documents/workspace/pinchin/sites/default/modules/custom_breadcrumbs/custom_breadcrumbs.install (revision 147)
+++ /Users/andrew/Documents/workspace/pinchin/sites/default/modules/custom_breadcrumbs/custom_breadcrumbs.install (working copy)
@@ -13,6 +13,8 @@
         titles varchar(255) NOT NULL default '',
         paths varchar(255) NOT NULL default '',
         node_type varchar(64) default '',
+        pages varchar(255) default '',
+        placement varchar(64) default ''
         PRIMARY KEY (bid)
       ) /*!40100 DEFAULT CHARACTER SET UTF8 */ ");
       break;
@@ -21,7 +23,9 @@
         bid serial CHECK (nid >= 0),
         titles varchar(255) NOT NULL default '',
         paths varchar(255) NOT NULL default '',
-        node_type varchar(64) default ''
+        node_type varchar(64) default '',
+        pages varchar(255) default '',
+        placement varchar(64) default ''
       )");
       db_query("CREATE INDEX {custom_breadcrumb}_bid_idx ON {custom_breadcrumb} (bid)");
       break;
@@ -30,4 +34,23 @@
 
 function custom_breadcrumbs_uninstall() {
   db_query('DROP TABLE {custom_breadcrumb}');
+}
+
+/**
+ * Add the pages visibility column and the insertion option variable.
+ *
+ */
+function custom_breadcrumbs_update_2() {
+  switch ($GLOBALS['db_type']) {
+    case 'mysql':
+    case 'mysqli':
+      $ret[] = update_sql("ALTER TABLE {custom_breadcrumb} ADD COLUMN pages varchar (255) default ''");
+      $ret[] = update_sql("ALTER TABLE {custom_breadcrumb} ADD COLUMN placement varchar (64) default 'replace'");
+      break;
+    case 'pgsql':
+      db_add_column($ret, 'custom_breadcrumb', 'pages', 'varchar(255)', array('not null' => FALSE, 'default' => 'replace'));
+      db_add_column($ret, 'custom_breadcrumb', 'placement', 'varchar(64)', array('not null' => FALSE, 'default' => 'replace'));
+      break;
+  }
+  return $ret;
 }
\ No newline at end of file
Index: /Users/andrew/Documents/workspace/pinchin/sites/default/modules/custom_breadcrumbs/custom_breadcrumbs.module
===================================================================
--- /Users/andrew/Documents/workspace/pinchin/sites/default/modules/custom_breadcrumbs/custom_breadcrumbs.module  (revision 147)
+++ /Users/andrew/Documents/workspace/pinchin/sites/default/modules/custom_breadcrumbs/custom_breadcrumbs.module  (working copy)
@@ -45,7 +45,8 @@
 
 function custom_breadcrumbs_nodeapi($node, $op, $teaser, $page) {
   if ($op == 'view' && !$teaser && $page) {
-    if ($breadcrumb = _custom_breadcrumbs_load_for_type($node->type)) {
+    if ($breadcrumbs = _custom_breadcrumbs_load_for_type($node->type, drupal_get_path_alias($_GET['q']), 1)) {
+      $breadcrumb = $breadcrumbs[0];
       $titles = explode("\n", $breadcrumb->titles);
       $paths = explode("\n", $breadcrumb->paths);
 
@@ -59,6 +60,19 @@
           $trail[] = l($title, trim($paths[$i]));
         }
       }
+      // Do we insert the breadcrumb at the appropriate place or replace
+      // any exisiting breadcrumbs?
+      switch ($breadcrumb->placement) {
+        case 'begin':
+          $trail = array_merge($trail, array_slice(drupal_get_breadcrumb(), 1));
+          break;
+        case 'end':
+          $trail = array_merge(drupal_get_breadcrumb(), array_slice($trail, 1));
+          break;
+        case 'replace':
+        default:
+          break;
+      }
       drupal_set_breadcrumb($trail);
     }
   }
@@ -69,7 +83,7 @@
 function custom_breadcrumbs_page() {
   $breadcrumbs = _custom_breadcrumbs_load_all_breadcrumbs(TRUE);
 
-  $header = array(t('node type'), '');
+  $header = array(t('node type'), t('Filter by paths'), '');
 
   $rows = array();
   foreach ($breadcrumbs as $breadcrumb) {
@@ -75,6 +89,7 @@
   foreach ($breadcrumbs as $breadcrumb) {
     $row = array();
     $row[] = $breadcrumb->node_type;
+    $row[] = nl2br($breadcrumb->pages);
     $row[] =  l(t('edit'), 'admin/build/custom_breadcrumbs/edit/' . $breadcrumb->bid);
     $rows[] = $row;
   }
@@ -129,6 +144,25 @@
     '#description' => t('A list of Drupal paths for the breadcrumb links, one on each line.'),
     '#default_value' => $bid ? $breadcrumb->paths : NULL
   );
+  
+  $form['pages'] = array(
+    '#type' => 'textarea',
+    '#title' => t('Filter by Paths'),
+    '#description' => t('A list of Drupal paths to show this breadcrumb on. Use to create multiple breadcrumbs of the same content type for different sections of the site. Wildcards are permitted.'),
+    '#default_value' => $bid ? $breadcrumb->pages: NULL,
+  );
+  
+  $form['placement'] = array(
+    '#type' => 'radios',
+    '#title' => t('Breadcrumb Placement'),
+    '#options' => array(
+      'replace' => t('Replace any breadcrumbs with the custom breadcrumb.'),
+      'begin' => t('Append to the begining of an existing breadcrumb.'),
+      'end' => t('Append to the end of an existing breadcrumb.'),
+    ),
+    '#default_value' => $bid ? $breadcrumb->placement : 'replace',
+    '#description' => t('Choose how to insert this breadcrumb.'),
+  );
 
   $form['help'] = array(
     '#type' => 'fieldset',
@@ -189,12 +223,33 @@
   return $breadcrumb;
 }
 
-function _custom_breadcrumbs_load_for_type($type) {
+/**
+ * Load all custom breadcrubs matching the given parameters.
+ *
+ * @param $type
+ *  Limit to breadcrumbs for node type $type.
+ * @param $path
+ *  Limit to breadrcumbs matching the given path.
+ * @param $limit
+ *  Limit the size of the array returned.
+ * @return Array of breadcrumb objects matching the given parameters.
+ */
+function _custom_breadcrumbs_load_for_type($type, $path = NULL, $limit = NULL) {
   $sql = "SELECT * FROM {custom_breadcrumb} WHERE node_type = '%s'";
   $result = db_query($sql, $type);
+  $i = 0;
   while ($breadcrumb = db_fetch_object($result)) {
-    return $breadcrumb;
+    if($limit && $i >= $limit) return $breadcrumbs;
+    if (!$path || $breadcrumb->pages == '') {
+      $breadcrumbs[] = $breadcrumb;
+      $i++;
+    }
+    else if (drupal_match_path($path, $breadcrumb->pages)) {
+      $breadcrumbs[] = $breadcrumb;
+      $i++;
+    }
   }
+  return $breadcrumbs;
 }
 
 function _custom_breadcrumbs_load_all_breadcrumbs($refresh = FALSE) {
@@ -214,15 +269,15 @@
 function _custom_breadcrumbs_save_breadcrumb($breadcrumb = NULL) {
   if (isset($breadcrumb->bid)) {
     $sql  = "UPDATE {custom_breadcrumb} SET";
-    $sql .= " titles = '%s', paths = '%s', node_type = '%s'";
+    $sql .= " titles = '%s', paths = '%s', node_type = '%s', pages = '%s', placement = '%s'";
     $sql .= " WHERE bid = %d";
-    db_query($sql, $breadcrumb->titles, $breadcrumb->paths, $breadcrumb->node_type, $breadcrumb->bid);
+    db_query($sql, $breadcrumb->titles, $breadcrumb->paths, $breadcrumb->node_type, $breadcrumb->pages, $breadcrumb->placement, $breadcrumb->bid);
   }
   else {
     $sql  = "INSERT INTO {custom_breadcrumb}";
-    $sql .= " (titles, paths, node_type)";
-    $sql .= " VALUES ('%s',  '%s',  '%s')";
-    db_query($sql, $breadcrumb->titles, $breadcrumb->paths, $breadcrumb->node_type);
+    $sql .= " (titles, paths, node_type, pages, placement)";
+    $sql .= " VALUES ('%s',  '%s',  '%s', '%s', '%s')";
+    db_query($sql, $breadcrumb->titles, $breadcrumb->paths, $breadcrumb->node_type, $breadcrumb->pages, $breadcrumb->placement);
   }
 }
 
@@ -229,4 +284,38 @@
 function _custom_breadcrumbs_delete_breadcrumb($bid) {
   $sql = 'DELETE FROM {custom_breadcrumb} WHERE bid = %d';
   db_query($sql, $bid);
+}
+
+/**
+ * Taken from cacheexclude.module as suggested by the author. Thanks!
+ */
+
+// This function is new in Drupal 6, but is oh-so-useful here that I'm backporting it.
+// When upgrading this module to Drupal 6, remove this function.
+if (!function_exists('drupal_match_path')) {
+  /**
+   * Check if a path matches any pattern in a set of patterns.
+   *
+   * @param $path
+   *   The path to match.
+   * @param $patterns
+   *   String containing a set of patterns separated by \n, \r or \r\n.
+   *
+   * @return
+   *   Boolean value: TRUE if the path matches a pattern, FALSE otherwise.
+   */
+  function drupal_match_path($path, $patterns) {
+    static $regexps;
+    
+    // This part is not in Drupal 6, but is necessary because the regex is broken
+    // for the front page, as always.
+    if ($path == variable_get('site_frontpage', 'node') && in_array('<front>', array_map('trim', explode("\n", $patterns)))) {
+      return true;
+    }
+    
+    if (!isset($regexps[$patterns])) {
+      $regexps[$patterns] = '/^('. preg_replace(array('/(\r\n?|\n)/', '/\\\\\*/', '/(^|\|)\\\\<front\\\\>($|\|)/'), array('|', '.*', '\1'. preg_quote(variable_get('site_frontpage', 'node'), '/') .'\2'), preg_quote($patterns, '/')) .')$/';
+    }
+    return preg_match($regexps[$patterns], $path);
+  }
 }
\ No newline at end of file