Patch 8.0.0884
Problem:    Can't specify the wait time for term_wait().
Solution:   Add an otional second argument.
Files:      src/evalfunc.c, src/terminal.c, runtime/doc/eval.txt


*** ../vim-8.0.0883/src/evalfunc.c      2017-08-06 17:53:06.575447867 +0200
--- src/evalfunc.c      2017-08-06 18:36:48.668512941 +0200
***************
*** 843,849 ****
      {"term_scrape",   2, 2, f_term_scrape},
      {"term_sendkeys", 2, 2, f_term_sendkeys},
      {"term_start",    1, 2, f_term_start},
!     {"term_wait",     1, 1, f_term_wait},
  #endif
      {"test_alloc_fail",       3, 3, f_test_alloc_fail},
      {"test_autochdir",        0, 0, f_test_autochdir},
--- 843,849 ----
      {"term_scrape",   2, 2, f_term_scrape},
      {"term_sendkeys", 2, 2, f_term_sendkeys},
      {"term_start",    1, 2, f_term_start},
!     {"term_wait",     1, 2, f_term_wait},
  #endif
      {"test_alloc_fail",       3, 3, f_test_alloc_fail},
      {"test_autochdir",        0, 0, f_test_autochdir},
*** ../vim-8.0.0883/src/terminal.c      2017-08-06 14:57:44.939764548 +0200
--- src/terminal.c      2017-08-06 19:04:19.364754742 +0200
***************
*** 36,42 ****
   * that buffer, attributes come from the scrollback buffer tl_scrollback.
   *
   * TODO:
-  * - Add argument to term_wait() for waiting time.
   * - For the scrollback buffer store lines in the buffer, only attributes in
   *   tl_scrollback.
   * - When the job ends:
--- 36,41 ----
***************
*** 2248,2259 ****
      }
      else
      {
        mch_check_messages();
        parse_queued_messages();
  
!       /* Wait for 10 msec for any channel I/O. */
!       /* TODO: use delay from optional argument */
!       ui_delay(10L, TRUE);
        mch_check_messages();
  
        /* Flushing messages on channels is hopefully sufficient.
--- 2247,2261 ----
      }
      else
      {
+       long wait = 10L;
+ 
        mch_check_messages();
        parse_queued_messages();
  
!       /* Wait for some time for any channel I/O. */
!       if (argvars[1].v_type != VAR_UNKNOWN)
!           wait = get_tv_number(&argvars[1]);
!       ui_delay(wait, TRUE);
        mch_check_messages();
  
        /* Flushing messages on channels is hopefully sufficient.
*** ../vim-8.0.0883/runtime/doc/eval.txt        2017-08-06 17:53:06.579447838 
+0200
--- runtime/doc/eval.txt        2017-08-06 18:36:33.652619633 +0200
***************
*** 2381,2387 ****
  term_scrape({buf}, {row})     List    get row of a terminal screen
  term_sendkeys({buf}, {keys})  none    send keystrokes to a terminal
  term_start({cmd}, {options})  Job     open a terminal window and run a job
! term_wait({buf})              Number  wait for screen to be updated
  test_alloc_fail({id}, {countdown}, {repeat})
                                none    make memory allocation fail
  test_autochdir()              none    enable 'autochdir' during startup
--- 2381,2387 ----
  term_scrape({buf}, {row})     List    get row of a terminal screen
  term_sendkeys({buf}, {keys})  none    send keystrokes to a terminal
  term_start({cmd}, {options})  Job     open a terminal window and run a job
! term_wait({buf} [, {time}])   Number  wait for screen to be updated
  test_alloc_fail({id}, {countdown}, {repeat})
                                none    make memory allocation fail
  test_autochdir()              none    enable 'autochdir' during startup
***************
*** 8033,8041 ****
                                 the command name.
                {only available when compiled with the |+terminal| feature}
  
! term_wait({buf})                                              *term_wait()*
                Wait for pending updates of {buf} to be handled.
                {buf} is used as with |term_getsize()|.
                {only available when compiled with the |+terminal| feature}
  
  test_alloc_fail({id}, {countdown}, {repeat})          *test_alloc_fail()*
--- 8041,8051 ----
                                 the command name.
                {only available when compiled with the |+terminal| feature}
  
! term_wait({buf} [, {time}])                                   *term_wait()*
                Wait for pending updates of {buf} to be handled.
                {buf} is used as with |term_getsize()|.
+               {time} is how long to wait for updates to arrive in msec.  If
+               not set then 10 msec will be used.
                {only available when compiled with the |+terminal| feature}
  
  test_alloc_fail({id}, {countdown}, {repeat})          *test_alloc_fail()*
*** ../vim-8.0.0883/src/version.c       2017-08-06 18:15:40.349643148 +0200
--- src/version.c       2017-08-06 19:05:16.372354363 +0200
***************
*** 771,772 ****
--- 771,774 ----
  {   /* Add new patch number below this line */
+ /**/
+     884,
  /**/

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