问题
I know GHCi supports Readline, and keybindings such as ^W and ^U work as expected.
I do wonder whether ghci support customization of keybindings the way Bash deals with inputrc.
回答1:
What is your GHC version? GHCi stopped using readline and started using libedit around 6.10 and haskeline around 6.12.
libedit can be configured in ~/.editrc; similarly, Haskeline has ~/.haskeline. For example, I have
# ~/.editrc (for libedit) edit on bind ^R em-inc-search-prev bind ^S em-inc-search-next bind ^[[5~ ed-search-prev-history bind ^[[6~ ed-search-next-history
to match my
# ~/.inputrc (for readline) "\e[5~": history-search-backward "\e[6~": history-search-forward
回答2:
@ephemient's answer above also helps with newer builds of MySQL which have switched from readline to libedit. I used
$ ~/.editrc:
bind ^[[A ed-search-prev-history
bind ^[[B ed-search-next-history
to match my old version which used to work inside MySQL:
$ ~/.inputrc:
"\e[A":history-search-backward
"\e[B":history-search-forward
(my only annoyance now is that if I just want to scroll and not search, I have to type a "." first to match every line).
来源：https://stackoverflow.com/questions/1825547/how-to-customize-readline-keybindings-of-ghci