1 files changed, 19 insertions, 0 deletions
diff --git a/src/Main.hs b/src/Main.hs
index 71d5cd7..f14d405 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE RecordWildCards #-}
 {-# LANGUAGE TemplateHaskell #-}
 module Main where
 
@@ -52,6 +53,17 @@ data VTState = VTState
     , _registers :: Map Char String
     }
 
+instance Show VTState where
+    show VTState{..} =
+      "<VTState"
+      ++ " buffer=" ++ show _buffer
+      ++ " mode=" ++ show _mode
+      ++ " processCount=" ++ show _processCount
+      ++ " count=" ++ show (maybe 0 id _count)
+      ++ " register=" ++ show _register
+      ++ " registers=" ++ show _registers
+      ++ ">"
+
 makeLenses ''VTState
 
 
@@ -139,6 +151,7 @@ uiThread cf putState getState = forever $ do
 
 data Command
   = AlertBadInput String
+  | DebugShowVTState
   | InsertString String
   | KillLastWord
   | KillLastChar
@@ -217,6 +230,9 @@ insertString s (ls, rs) = (ls ++ s, rs)
 
 execCommand :: Command -> VT ()
 
+execCommand DebugShowVTState =
+    get >>= tell . (:[]) . pp . SGR [35] . Plain . show
+
 execCommand (MotionCommand x) = do
     c <- uses count (maybe 1 id)
     buffer %= move x c
@@ -480,6 +496,7 @@ charToCode c = "\\x" ++ showIntAtBase 16 intToDigit (ord c) ""
 dmap :: Keymap
 dmap =
   [ ("\ESC", ChangeMode NormalMode <> SetCount Nothing)
+  , ("\ESC[24~", DebugShowVTState)
   , ("d", DeleteEntireLine <> ChangeMode NormalMode <> SetCount Nothing)
   , ("h", DeleteLeft <> ChangeMode NormalMode <> SetCount Nothing)
   , ("l", DeleteRight <> ChangeMode NormalMode <> SetCount Nothing)
@@ -511,6 +528,7 @@ nmap =
   , ("w", MotionCommandWarn WordsForward <> SetCount Nothing)
   , ("d", ChangeMode DeleteMode)
   , ("\"", ChangeMode SelectRegisterMode <> SetCount Nothing)
+  , ("\ESC[24~", DebugShowVTState)
   , ("\ESC[C", MotionCommandWarn GotoRight <> SetCount Nothing)
   , ("\ESC[D", MotionCommandWarn GotoLeft <> SetCount Nothing)
   , ("\x0a", ExecuteInputBuffer <> ChangeMode InsertMode <> SetCount Nothing)
@@ -540,6 +558,7 @@ imap =
   [ ("\ESC", ChangeMode NormalMode <> MotionCommand GotoLeft)
   , ("\x01", MotionCommandWarn GotoFirstChar)
   , ("\x05", MotionCommandWarn GotoEndOfLine)
+  , ("\ESC[24~", DebugShowVTState)
   , ("\ESC[3~", KillNextChar)
   , ("\ESC[C", MotionCommandWarn GotoRight)
   , ("\ESC[D", MotionCommandWarn GotoLeft)