Patch 7.4.1360
Problem:    Can't remove a callback with ch_setoptions().
Solution:   When passing zero or an empty string remove the callback.
Files:      src/channel.c, src/proto/channel.pro, src/testdir/test_channel.vim


*** ../vim-7.4.1359/src/channel.c       2016-02-19 22:33:31.492263407 +0100
--- src/channel.c       2016-02-19 23:18:06.004116634 +0100
***************
*** 749,764 ****
  }
  
  /*
-  * Set the callback for channel "channel".
-  */
-     void
- channel_set_callback(channel_T *channel, char_u *callback)
- {
-     vim_free(channel->ch_callback);
-     channel->ch_callback = vim_strsave(callback);
- }
- 
- /*
   * Set various properties from an "options" argument.
   */
      void
--- 748,753 ----
***************
*** 769,777 ****
      if (options->jo_set & JO_TIMEOUT)
        channel->ch_timeout = options->jo_timeout;
  
!     if ((options->jo_set & JO_CALLBACK)
!           && options->jo_callback != NULL && *options->jo_callback != NUL)
!       channel_set_callback(channel, options->jo_callback);
  }
  
  /*
--- 758,771 ----
      if (options->jo_set & JO_TIMEOUT)
        channel->ch_timeout = options->jo_timeout;
  
!     if (options->jo_set & JO_CALLBACK)
!     {
!       vim_free(channel->ch_callback);
!       if (options->jo_callback != NULL && *options->jo_callback != NUL)
!           channel->ch_callback = vim_strsave(options->jo_callback);
!       else
!           channel->ch_callback = NULL;
!     }
  }
  
  /*
*** ../vim-7.4.1359/src/proto/channel.pro       2016-02-19 22:33:31.500263323 
+0100
--- src/proto/channel.pro       2016-02-19 23:20:26.586639147 +0100
***************
*** 10,16 ****
  channel_T *channel_open(char *hostname, int port_in, int waittime, void 
(*close_cb)(void));
  void channel_set_pipes(channel_T *channel, sock_T in, sock_T out, sock_T err);
  void channel_set_job(channel_T *channel, job_T *job);
- void channel_set_callback(channel_T *channel, char_u *callback);
  void channel_set_options(channel_T *channel, jobopt_T *options);
  void channel_set_req_callback(channel_T *channel, char_u *callback, int id);
  char_u *channel_get(channel_T *channel);
--- 10,15 ----
*** ../vim-7.4.1359/src/testdir/test_channel.vim        2016-02-19 
22:59:39.839745582 +0100
--- src/testdir/test_channel.vim        2016-02-19 23:15:02.974040123 +0100
***************
*** 149,154 ****
--- 149,155 ----
    call ch_setoptions(handle, {'timeout': 1111})
    call assert_fails("call ch_setoptions(handle, {'waittime': 111})", "E475")
    call assert_fails("call ch_setoptions(handle, {'mode': 'json'})", "E475")
+   call ch_setoptions(handle, {'callback': ''})
  
    " Send an eval request that works.
    call assert_equal('ok', ch_sendexpr(handle, 'eval-works'))
*** ../vim-7.4.1359/src/version.c       2016-02-19 22:59:39.843745540 +0100
--- src/version.c       2016-02-19 23:19:03.011517509 +0100
***************
*** 749,750 ****
--- 749,752 ----
  {   /* Add new patch number below this line */
+ /**/
+     1360,
  /**/

-- 
Not too long ago, compress was something you did to garbage...

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