fix: Prevent people from erroring from having new lines in display

lua/telescope/pickers.lua

@@ -259,7 +259,14 @@ function Picker:find()
         display = '  ' .. display
 
         -- log.info("Setting row", row, "with value", entry)
-        vim.api.nvim_buf_set_lines(results_bufnr, row, row + 1, false, {display})
+        local set_ok = pcall(vim.api.nvim_buf_set_lines, results_bufnr, row, row + 1, false, {display})
+
+        -- This pretty much only fails when people leave newlines in their results.
+        --  So we'll clean it up for them if it fails.
+        if not set_ok then
+          display = display:gsub("\n", " | ")
+          vim.api.nvim_buf_set_lines(results_bufnr, row, row + 1, false, {display})
+        end
       end
     ))
 

lua/tests/manual/newline_tables.lua

@@ -0,0 +1,15 @@
+RELOAD('telescope')
+
+local actions = require('telescope.actions')
+local finders = require('telescope.finders')
+local previewers = require('telescope.previewers')
+local pickers = require('telescope.pickers')
+local sorters = require('telescope.sorters')
+local utils = require('telescope.utils')
+
+
+pickers.new({
+  prompt    = 'Telescope Builtin',
+  finder    = finders.new_table({"hello\nworld", "other", "item"}),
+  sorter    = sorters.get_norcalli_sorter(),
+}):find()