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[Backport release-0.7] fix(lsp): fix unnecessary buffers being added on empty diagnostics (#18469)

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* fix(lsp): fix unnecessary buffers being added on empty diagnostics

Some language servers send empty `textDocument/publishDiagnostics`
messages after indexing the project, sometimes resulting in creation
of a lot of unnecessary buffers. As a workaround, skip empty messages
for nonexistent buffers before resolving the filename to a bufnr.

(cherry picked from commit 26eb6785eb)

* Add test

(cherry picked from commit d2e9dab377)

Co-authored-by: ii14 <ii14@users.noreply.github.com>
This commit is contained in:
github-actions[bot]
2022-05-08 11:27:30 +02:00
committed by GitHub
parent 9e040acfa3
commit 35075dcc22
2 changed files with 45 additions and 2 deletions
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8
runtime/lua/vim/lsp/diagnostic.lua
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@@ -185,7 +185,12 @@ end
function M.on_publish_diagnostics(_, result, ctx, config)
local client_id = ctx.client_id
local uri = result.uri
local bufnr = vim.uri_to_bufnr(uri)
local fname = vim.uri_to_fname(uri)
local diagnostics = result.diagnostics
if #diagnostics == 0 and vim.fn.bufexists(fname) == 0 then
return
end
local bufnr = vim.fn.bufadd(fname)
if not bufnr then
return
@@ -193,7 +198,6 @@ function M.on_publish_diagnostics(_, result, ctx, config)
client_id = get_client_id(client_id)
local namespace = M.get_namespace(client_id)
local diagnostics = result.diagnostics
if config then
for _, opt in pairs(config) do