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docs: LspAttach, LspDetach examples #30661
The current LspAttach example shows setting options which are already set by default. We should expect that users are going to copy-paste these examples, so we shouldn't use examples that are superfluous and unnecessary.
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@ -87,8 +87,11 @@ To override or delete any of the above defaults, set or unset the options on
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vim.api.nvim_create_autocmd('LspAttach', {
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callback = function(args)
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-- Unset 'formatexpr'
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vim.bo[args.buf].formatexpr = nil
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-- Unset 'omnifunc'
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vim.bo[args.buf].omnifunc = nil
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-- Unmap K
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vim.keymap.del('n', 'K', { buffer = args.buf })
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end,
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})
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@ -119,6 +122,7 @@ server. Example: >lua
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vim.lsp.buf.format({bufnr = args.buf, id = client.id})
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end,
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})
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end
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end,
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})
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<
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@ -523,32 +527,25 @@ EVENTS *lsp-events*
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LspAttach *LspAttach*
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After an LSP client attaches to a buffer. The |autocmd-pattern| is the
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name of the buffer. When used from Lua, the client ID is passed to the
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callback in the "data" table. Example: >lua
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vim.api.nvim_create_autocmd("LspAttach", {
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callback = function(args)
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local bufnr = args.buf
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local client = vim.lsp.get_client_by_id(args.data.client_id)
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if client.supports_method("textDocument/completion") then
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vim.bo[bufnr].omnifunc = "v:lua.vim.lsp.omnifunc"
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end
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if client.supports_method("textDocument/definition") then
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vim.bo[bufnr].tagfunc = "v:lua.vim.lsp.tagfunc"
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end
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end,
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})
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<
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callback in the "data" table. See |lsp-config| for an example.
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LspDetach *LspDetach*
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Just before an LSP client detaches from a buffer. The |autocmd-pattern|
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is the name of the buffer. When used from Lua, the client ID is passed
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to the callback in the "data" table. Example: >lua
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vim.api.nvim_create_autocmd("LspDetach", {
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vim.api.nvim_create_autocmd('LspDetach', {
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callback = function(args)
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-- Get the detaching client
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local client = vim.lsp.get_client_by_id(args.data.client_id)
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-- Do something with the client
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vim.cmd("setlocal tagfunc< omnifunc<")
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-- Remove the autocommand to format the buffer on save, if it exists
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if client.supports_method('textDocument/formatting') then
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vim.api.nvim_clear_autocmds({
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event = 'BufWritePre',
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buffer = args.buf,
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})
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end
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end,
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})
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<
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