patch 8.1.0786: ml_get error when updating the status line
Problem: ml_get error when updating the status line and a terminal had its
scrollback cleared. (Chris Patuzzo)
Solution: Check the cursor position when drawing the status line.
(closes #3830)
diff --git a/src/testdir/test_terminal.vim b/src/testdir/test_terminal.vim
index f78d66c..960a85e 100644
--- a/src/testdir/test_terminal.vim
+++ b/src/testdir/test_terminal.vim
@@ -1719,3 +1719,28 @@
exe term . 'bwipe!'
endfunc
+
+" When drawing the statusline the cursor position may not have been updated
+" yet.
+" 1. create a terminal, make it show 2 lines
+" 2. 0.5 sec later: leave terminal window, execute "i"
+" 3. 0.5 sec later: clear terminal window, now it's 1 line
+" 4. 0.5 sec later: redraw, including statusline (used to trigger bug)
+" 4. 0.5 sec later: should be done, clean up
+func Test_terminal_statusline()
+ if !has('unix')
+ return
+ endif
+ set statusline=x
+ terminal
+ let tbuf = bufnr('')
+ call term_sendkeys(tbuf, "clear; echo a; echo b; sleep 1; clear\n")
+ call timer_start(500, { tid -> feedkeys("\<C-w>j", 'tx') })
+ call timer_start(1500, { tid -> feedkeys("\<C-l>", 'tx') })
+ au BufLeave * if &buftype == 'terminal' | silent! normal i | endif
+
+ sleep 2
+ exe tbuf . 'bwipe!'
+ au! BufLeave
+ set statusline=
+endfunc