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-rw-r--r--runtime/doc/lsp.txt17
-rw-r--r--runtime/lua/vim/lsp.lua31
2 files changed, 38 insertions, 10 deletions
diff --git a/runtime/doc/lsp.txt b/runtime/doc/lsp.txt
index c1d7f3a45a..78100d5277 100644
--- a/runtime/doc/lsp.txt
+++ b/runtime/doc/lsp.txt
@@ -51,15 +51,14 @@ Starting a LSP client will automatically report diagnostics via
|vim.diagnostic|. Read |vim.diagnostic.config| to learn how to customize the
display.
-To get completion from the LSP server you can enable the |vim.lsp.omnifunc|:
->
- vim.bo.omnifunc = 'v:lua.vim.lsp.omnifunc'
-<
-To trigger completion, use |i_CTRL-X_CTRL-O|
-
-To get features like go-to-definition you can enable the |vim.lsp.tagfunc|
-which changes commands like |:tjump| to utilize the language server and also
-enables keymaps like |CTLR-]|, |CTRL-W_]|, |CTRL-W_}| and many more.
+It also sets some buffer options if the options are otherwise empty and if the
+language server supports the functionality.
+
+- |omnifunc| is set to |vim.lsp.omnifunc|. This allows to trigger completion
+ using |i_CTRL-X_CTRL-o|
+- |tagfunc| is set to |vim.lsp.tagfunc|. This enables features like
+ go-to-definition, |:tjump|, and keymaps like |CTRL-]|, |CTRL-W_]|,
+ |CTRL-W_}| to utilize the language server.
To use other LSP features like hover, rename, etc. you can setup some
additional keymaps. It's recommended to setup them in a |LspAttach| autocmd to
diff --git a/runtime/lua/vim/lsp.lua b/runtime/lua/vim/lsp.lua
index 75c3b63da7..e11f127f47 100644
--- a/runtime/lua/vim/lsp.lua
+++ b/runtime/lua/vim/lsp.lua
@@ -562,7 +562,7 @@ end
---@private
--- Default handler for the 'textDocument/didOpen' LSP notification.
---
----@param bufnr (Number) Number of the buffer, or 0 for current
+---@param bufnr number Number of the buffer, or 0 for current
---@param client Client object
local function text_document_did_open_handler(bufnr, client)
changetracking.init(client, bufnr)
@@ -948,6 +948,28 @@ function lsp.start_client(config)
end
---@private
+ local function set_defaults(client, bufnr)
+ if client.server_capabilities.definitionProvider and vim.bo[bufnr].tagfunc == '' then
+ vim.bo[bufnr].tagfunc = 'v:lua.vim.lsp.tagfunc'
+ end
+ if client.server_capabilities.completionProvider and vim.bo[bufnr].omnifunc == '' then
+ vim.bo[bufnr].omnifunc = 'v:lua.vim.lsp.omnifunc'
+ end
+ end
+
+ ---@private
+ --- Reset defaults set by `set_defaults`.
+ --- Must only be called if the last client attached to a buffer exits.
+ local function unset_defaults(bufnr)
+ if vim.bo[bufnr].tagfunc == 'v:lua.vim.lsp.tagfunc' then
+ vim.bo[bufnr].tagfunc = nil
+ end
+ if vim.bo[bufnr].omnifunc == 'v:lua.vim.lsp.omnifunc' then
+ vim.bo[bufnr].omnifunc = nil
+ end
+ end
+
+ ---@private
--- Invoked on client exit.
---
---@param code (number) exit code of the process
@@ -972,6 +994,11 @@ function lsp.start_client(config)
client_ids[client_id] = nil
end
+ if vim.tbl_isempty(client_ids) then
+ vim.schedule(function()
+ unset_defaults(bufnr)
+ end)
+ end
end
active_clients[client_id] = nil
@@ -1325,6 +1352,8 @@ function lsp.start_client(config)
function client._on_attach(bufnr)
text_document_did_open_handler(bufnr, client)
+ set_defaults(client, bufnr)
+
nvim_exec_autocmds('LspAttach', {
buffer = bufnr,
modeline = false,