fix: multiple lsp in formatting (#240)

* chore(doc): auto generate docs

* fix: muiti client use case

* fix: typo

* fix: only 1 lsp is allowed

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: xiaoshihou514

lua/guard/lsp.lua

@@ -15,39 +15,36 @@ function M.format(buf, range, acc)
 
   -- use a temporary buffer to apply edits
   local scratch = api.nvim_create_buf(false, true)
-  local n_edits = #clients
   api.nvim_buf_set_lines(scratch, 0, -1, false, vim.split(acc, '\r?\n'))
   local line_offset = range and range.start[1] - 1 or 0
 
-  for _, c in pairs(clients) do
-    acc = async.await(1, function(callback)
-      ---@diagnostic disable-next-line: duplicate-set-field
-      vim.lsp.util.apply_text_edits = function(text_edits, _, offset_encoding)
-        -- the target buffer must be buf, we apply it to our scratch buffer
-        n_edits = n_edits - 1
+  local c = clients[1]
+  return async.await(1, function(callback)
+    ---@diagnostic disable-next-line: duplicate-set-field
+    vim.lsp.util.apply_text_edits = function(...)
+      local text_edits, bufnr, offset_encoding = ...
+      if bufnr == buf then
+        -- we apply it to our scratch buffer
         vim.tbl_map(function(edit)
           edit.range.start.line = edit.range.start.line - line_offset
           edit.range['end'].line = edit.range['end'].line - line_offset
         end, text_edits)
         apply(text_edits, scratch, offset_encoding)
-        if n_edits == 0 then
-          vim.lsp.util.apply_text_edits = apply
-          local lines = api.nvim_buf_get_lines(scratch, 0, -1, false)
-          api.nvim_command('silent! bwipe! ' .. scratch)
-          callback(table.concat(lines, '\n'))
-        end
+        vim.lsp.util.apply_text_edits = apply
+        local lines = api.nvim_buf_get_lines(scratch, 0, -1, false)
+        api.nvim_command('silent! bwipe! ' .. scratch)
+        callback(table.concat(lines, '\n'))
+      else
+        apply(...)
       end
 
-      vim.lsp.buf.format({
-        bufnr = buf,
-        range = range,
-        async = true,
-        id = c.id,
-      })
-    end)
-  end
-
-  return acc
+    vim.lsp.buf.format({
+      bufnr = buf,
+      range = range,
+      async = true,
+      id = c.id,
+    })
+  end)
 end
 
 return M