From 55d8d16ee8eff2b35376040d04ef838bbe3bb32d Mon Sep 17 00:00:00 2001
From: Shish <shish@shishnet.org>
Date: Sat, 31 Mar 2012 17:06:53 +0100
Subject: [PATCH] suggest a perm when dev typos

---
 core/userclass.class.php | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/core/userclass.class.php b/core/userclass.class.php
index 317ff6d3..d7e5616b 100644
--- a/core/userclass.class.php
+++ b/core/userclass.class.php
@@ -30,7 +30,17 @@ class UserClass {
 			return $this->parent->can($ability);
 		}
 		else {
-			die("Unknown ability: ".html_escape($ability));
+			global $_user_classes;
+			$min_dist = 9999;
+			$min_ability = null;
+			foreach($_user_classes['base']->abilities as $a => $cando) {
+				$v = levenshtein($ability, $a);
+				if($v < $min_dist) {
+					$min_dist = $v;
+					$min_ability = $a;
+				}
+			}
+			throw new SCoreException("Unknown ability '".html_escape($ability)."'. Did the developer mean '".html_escape($min_ability)."'?");
 		}
 	}
 }