Hi,

Ryan Davis wrote:
>> 635 % ruby extconf.rb
>> checking for tgetnum() in -lncurses... yes
>> checking for readline/readline.h... yes
>> checking for readline/history.h... yes
>> checking for readline() in -lreadline... yes
>> checking for rl_filename_completion_function... yes
>> checking for rl_deprep_term_function... yes
>> checking for rl_completion_append_character... yes
>> checking for rl_basic_word_break_characters... yes
>> checking for rl_completer_word_break_characters... yes
>> checking for rl_basic_quote_characters... yes
>> checking for rl_completer_quote_characters... yes
>> checking for rl_filename_quote_characters... yes
>> checking for rl_attempted_completion_over... yes
>> checking for rl_library_version... yes
>> checking for rl_event_hook... yes
>> checking for rl_cleanup_after_signal()... yes
>> checking for rl_clear_signals()... yes
>> checking for rl_vi_editing_mode()... yes
>> checking for rl_emacs_editing_mode()... yes
>> checking for rl_clear_signals()... yes
>> checking for replace_history_entry()... yes
>> checking for remove_history()... yes
>> creating Makefile

It looks like GNU Readline, not libedit.
Did you install it yourself?

Shugo