[ruby/reline] Suppress crashing when boken prompt_list is given

https://github.com/ruby/reline/commit/922d087e7a
2020-12-24 20:28:26 +09:00 · 2020-12-24 20:28:26 +09:00 · 8d5d139afa
commit 8d5d139afa
parent 634b231f33
1 changed files with 1 additions and 0 deletions
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@ -122,6 +122,7 @@ class Reline::LineEditor
      mode_icon = check_mode_icon
      prompt_list = prompt_list.map{ |pr| mode_icon + pr } if mode_icon
      prompt = prompt_list[@line_index]
+      prompt = prompt_list[0] if prompt.nil?
      prompt_width = calculate_width(prompt, true)
      [prompt, prompt_width, prompt_list]
    else