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api/buffer: create new buffers in the "opened" state

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Otherwise vim will think that ml_append() needs to "enter" the buffer,
which emits unexpected autocommands.

ref https://github.com/vim-airline/vim-airline/issues/1930
This commit is contained in:
Björn Linse
2019-06-03 13:08:05 +02:00
parent 3273e39db6
commit 7ac3c311ee
2 changed files with 33 additions and 7 deletions
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16
test/functional/api/vim_spec.lua
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@@ -1336,7 +1336,7 @@ describe('API', function()
eq({id=2}, meths.create_buf(true, false))
eq({id=3}, meths.create_buf(false, false))
eq(' 1 %a "[No Name]" line 1\n'..
' 2 "[No Name]" line 0',
' 2 h "[No Name]" line 0',
meths.command_output("ls"))
-- current buffer didn't change
eq({id=1}, meths.get_current_buf())
@@ -1367,14 +1367,24 @@ describe('API', function()
eq({id=1}, meths.get_current_buf())
end)
it("doesn't cause BufEnter or BufWinEnter autocmds", function()
command("let g:fired = v:false")
command("au BufEnter,BufWinEnter * let g:fired = v:true")
eq({id=2}, meths.create_buf(true, false))
meths.buf_set_lines(2, 0, -1, true, {"test", "text"})
eq(false, eval('g:fired'))
end)
it('|scratch-buffer|', function()
eq({id=2}, meths.create_buf(false, true))
eq({id=3}, meths.create_buf(true, true))
eq({id=4}, meths.create_buf(true, true))
local scratch_bufs = { 2, 3, 4 }
eq(' 1 %a "[No Name]" line 1\n'..
' 3 "[Scratch]" line 0\n'..
' 4 "[Scratch]" line 0',
' 3 h "[Scratch]" line 0\n'..
' 4 h "[Scratch]" line 0',
meths.command_output("ls"))
-- current buffer didn't change
eq({id=1}, meths.get_current_buf())