From 1a3c6a2f9cb6175e954a8fabd59fe9ed9424017e Mon Sep 17 00:00:00 2001
From: mysticbbs <mysticbbs@gmail.com>
Date: Wed, 15 Feb 2012 01:10:00 -0500
Subject: [PATCH] Backspace now moves back to the previous link.  In addition,
 if there is no previous page, both a @PREV link and backspace will attempt to
 get back to the starting KEYWORD before finally resorting to INDEX

---
 mystic/bbs_ansi_help.pas | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/mystic/bbs_ansi_help.pas b/mystic/bbs_ansi_help.pas
index a80f684..4df3a4b 100644
--- a/mystic/bbs_ansi_help.pas
+++ b/mystic/bbs_ansi_help.pas
@@ -364,10 +364,27 @@ Begin
         End;
       End Else Begin
         Case Ch of
+          #08 : Begin
+                  If LastPos = 0 Then
+                    CurKey := Keyword
+                  Else Begin
+                    CurKey := LastKey[LastPos];
+                    Dec (LastPos);
+                  End;
+
+                  OK := ReadKeywordData;
+
+                  If Not OK Then Begin
+                    CurKey := 'INDEX';
+                    OK     := ReadKeywordData;
+                  End;
+
+                  Break;
+                End;
           #13 : If Text[TopPage + CurLine - 1].Links > 0 Then Begin
                   If Text[TopPage + CurLine - 1].Link[CurLPos].Key = '@PREV' Then Begin
                     If LastPos = 0 Then
-                      CurKey := 'INDEX'
+                      CurKey := Keyword
                     Else Begin
                       CurKey := LastKey[LastPos];
                       Dec (LastPos);