Do the correct inputrc command by a shell line code

Question

How do we do inputrc command by a shell line code as gave failure here

$ bind -x '"\C-l":next-history'

bash: next-history: command not found  
$ 

Please do sincere help

Answer 1

According to man bash:

• -x keyseq:shell-command

  Cause shell-command to be executed whenever keyseq is entered. [...]

So for your case when you press CTRL-L, Bash will try to execute a command named next-history.

To map to Readline's next-history you can write like this:

bind '"\C-l": next-history'