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fix(lsp): avoid attaching to unloaded buffers (#16726)

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Closes https://github.com/neovim/neovim/issues/16562 https://github.com/neovim/neovim/issues/16249 https://github.com/neovim/neovim/issues/16297

* buf_attach_client can be called on an unloaded buffer
* on_attach will prematurely fail, while the language server client
  tracks this buffer as attached
* The language server client will track this buffer as attached despite
  textDocument/didChange notifications not being sent to the server
* Instead, check if the buffer is loaded and return early, warning via
  the lsp logger that buf_attach_client was called on an invalid buffer

(cherry picked from commit 6d63cb8f6a)

Co-authored-by: Michael Lingelbach <m.j.lbach@gmail.com>
This commit is contained in:
github-actions[bot] 2021-12-19 13:24:08 -08:00 committed by GitHub
parent 1bb861c7a1
commit 00889948dd
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1 changed files with 6 additions and 0 deletions
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6
runtime/lua/vim/lsp.lua
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@ -1155,6 +1155,12 @@ function lsp.buf_attach_client(bufnr, client_id)
client_id = {client_id, 'n'};
}
bufnr = resolve_bufnr(bufnr)
if not vim.api.nvim_buf_is_loaded(bufnr) then
local _ = log.warn() and log.warn(
string.format("buf_attach_client called on unloaded buffer (id: %d): ", bufnr)
)
return false
end
local buffer_client_ids = all_buffer_active_clients[bufnr]
-- This is our first time attaching to this buffer.
if not buffer_client_ids then