Merge pull request #333 from garypippi/when_text_insert_format_is_nil

fix: InsertTextFormat should fallback to PlainText

Author: vigoux

lua/completion/source/lsp.lua

@@ -30,15 +30,17 @@ local function get_completion_word(item, prefix, suffix)
       else
           newText = item.textEdit.newText
       end
-    if protocol.InsertTextFormat[item.insertTextFormat] == "PlainText"
-		or opt.get_option('enable_snippet') == "snippets.nvim" then
+    if not item.insertTextFormat
+    or protocol.InsertTextFormat[item.insertTextFormat] == "PlainText"
+    or opt.get_option('enable_snippet') == "snippets.nvim" then
       return newText
     else
       return vim.lsp.util.parse_snippet(newText)
     end
   elseif item.insertText ~= nil and item.insertText ~= vim.NIL then
-    if protocol.InsertTextFormat[item.insertTextFormat] == "PlainText"
-		or opt.get_option('enable_snippet') == "snippets.nvim" then
+    if not item.insertTextFormat
+    or protocol.InsertTextFormat[item.insertTextFormat] == "PlainText"
+    or opt.get_option('enable_snippet') == "snippets.nvim" then
       return item.insertText
     else
       return vim.lsp.util.parse_snippet(item.insertText)