# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1578081616 -3600
# Node ID af795b6a2624d07e6db3e685bcfb3bb109c1aa79
# Parent  9c3bd0bafcdce3650b412a4c5f80491543c778e0
patch 8.2.0082: when reusing a buffer listeners are not cleared

Commit: https://github.com/vim/vim/commit/f10997a1543eb0724d882da3678bacd44e647141
Author: Bram Moolenaar <Bram@vim.org>
Date:   Fri Jan 3 21:00:02 2020 +0100

    patch 8.2.0082: when reusing a buffer listeners are not cleared

    Problem:    When reusing a buffer listeners are not cleared. (Axel Forsman)
    Solution:   Clear listeners when reusing a buffer. (closes https://github.com/vim/vim/issues/5431)

diff --git a/src/buffer.c b/src/buffer.c
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -979,6 +979,7 @@ free_buffer_stuff(
 	hash_init(&buf->b_vars->dv_hashtab);
 	init_changedtick(buf);
 	CHANGEDTICK(buf) = tick;
+	remove_listeners(buf);
     }
 #endif
     uc_clear(&buf->b_ucmds);		// clear local user commands
diff --git a/src/testdir/test_listener.vim b/src/testdir/test_listener.vim
--- a/src/testdir/test_listener.vim
+++ b/src/testdir/test_listener.vim
@@ -295,3 +295,34 @@ func Test_listener_undo_line_number()
   delfunc EchoChanges
   call listener_remove(lid)
 endfunc
+
+func Test_listener_cleared_newbuf()
+  func Listener(bufnr, start, end, added, changes)
+    let g:gotCalled += 1
+  endfunc
+  new
+  " check that listening works
+  let g:gotCalled = 0
+  let lid = listener_add("Listener")
+  call feedkeys("axxx\<Esc>", 'xt')
+  call listener_flush(bufnr())
+  call assert_equal(1, g:gotCalled)
+  %bwipe!
+  let bufnr = bufnr()
+  let b:testing = 123
+  let lid = listener_add("Listener")
+  enew!
+  " check buffer is reused
+  call assert_equal(bufnr, bufnr())
+  call assert_false(exists('b:testing'))
+
+  " check that listening stops when reusing the buffer
+  let g:gotCalled = 0
+  call feedkeys("axxx\<Esc>", 'xt')
+  call listener_flush(bufnr())
+  call assert_equal(0, g:gotCalled)
+  unlet g:gotCalled
+
+  bwipe!
+  delfunc Listener
+endfunc
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    82,
+/**/
     81,
 /**/
     80,