feat: mpls #4341

Author: tahv

lsp/mpls.lua

@@ -0,0 +1,36 @@
+---@brief
+---
+--- https://github.com/mhersson/mpls
+---
+--- Markdown Preview Language Server
+
+---@type vim.lsp.Config
+return {
+  cmd = {
+    'mpls',
+    '--theme',
+    'dark',
+    '--enable-emoji',
+    '--enable-footnotes',
+    '--no-auto',
+  },
+  root_markers = { '.marksman.toml', '.git' },
+  filetypes = { 'markdown' },
+  on_attach = function(client, bufnr)
+    vim.api.nvim_create_autocmd('BufEnter', {
+      pattern = { '*.md' },
+      group = vim.api.nvim_create_augroup('lspconfig.mpls.focus', { clear = true }),
+      callback = function(ctx)
+        ---@diagnostic disable-next-line:param-type-mismatch
+        client:notify('mpls/editorDidChangeFocus', { uri = ctx.match })
+      end,
+      desc = 'mpls: notify buffer focus changed',
+    })
+    vim.api.nvim_buf_create_user_command(bufnr, 'LspMplsOpenPreview', function()
+      client:exec_cmd({
+        title = 'Preview markdown with mpls',
+        command = 'open-preview',
+      })
+    end, { desc = 'Preview markdown with mpls' })
+  end,
+}