问题
when I do rails console my git bash shell permits me to use up arrow to recall commands, and use left/right arrows to modify the text I'm entering
when I run irb the shell ignores backspace and arrow keys
I'm not sure why the arrow keys would work fine in the shell for rails console but not when running irb?
回答1:
As I just wrote in the related Backspace and arrow keys aren't working in IRB(Git Bash console) on windows machine:
running irb with --noreadline solved this problem for me:
irb --noreadline
回答2:
What operating system are you running? You may need install the GNU Readline Library and reinstall ruby.
回答3:
Doing the following command fixed the problem for me on Windows
gem install wirble win32console
回答4:
As documented here https://groups.google.com/forum/#!topic/rubyinstaller/HgswOz1T-eE, use the below command/alias:
alias irb="ruby -S irb"
来源：https://stackoverflow.com/questions/6447924/ruby-irb-on-windows-using-gitbash-shell-cant-use-arrow-keys-to-modify-command