patch 8.0.1633: a TextChanged autocmd triggers when it is defined
Problem: A TextChanged autocmd triggers when it is defined after creating a
buffer.
Solution: Set b_last_changedtick when opening a buffer. (Hirohito Highlight,
closes #2742)
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index d1ce561..af7aaff 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -1,5 +1,7 @@
" Tests for autocommands
+source shared.vim
+
func! s:cleanup_buffers() abort
for bnr in range(1, bufnr('$'))
if bufloaded(bnr) && bufnr('%') != bnr
@@ -1304,3 +1306,22 @@
bw!
endfunc
+
+func Test_Changed_FirstTime()
+ if !has('terminal') || has('gui_running')
+ return
+ endif
+ " Prepare file for TextChanged event.
+ call writefile([''], 'Xchanged.txt')
+ let buf = term_start([GetVimProg(), '--clean', '-c', 'set noswapfile'], {'term_rows': 3})
+ call assert_equal('running', term_getstatus(buf))
+ " It's only adding autocmd, so that no event occurs.
+ call term_sendkeys(buf, ":au! TextChanged <buffer> call writefile(['No'], 'Xchanged.txt')\<cr>")
+ call term_sendkeys(buf, "\<C-\\>\<C-N>:qa!\<cr>")
+ call WaitFor({-> term_getstatus(buf) == 'finished'})
+ call assert_equal([''], readfile('Xchanged.txt'))
+
+ " clean up
+ call delete('Xchanged.txt')
+ bwipe!
+endfunc