patch 8.0.0957: a terminal job can deadlock when sending many keys
Problem: When term_sendkeys() sends many keys it may get stuck in writing
to the job.
Solution: Make the write non-blocking, buffer keys to be sent.
diff --git a/src/testdir/test_terminal.vim b/src/testdir/test_terminal.vim
index fe3d7df..c75d07f 100644
--- a/src/testdir/test_terminal.vim
+++ b/src/testdir/test_terminal.vim
@@ -450,3 +450,16 @@
exe buf . 'bwipe!'
call assert_equal("", bufname(buf))
endfunction
+
+func Test_terminal_noblock()
+ let buf = term_start(&shell)
+
+ for c in ['a','b','c','d','e','f','g','h','i','j','k']
+ call term_sendkeys(buf, 'echo ' . repeat(c, 5000) . "\<cr>")
+ endfor
+
+ let g:job = term_getjob(buf)
+ call Stop_shell_in_terminal(buf)
+ call term_wait(buf)
+ bwipe
+endfunc