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I add to ~/.bashrc the following code:

test_exclamation () {
  printf %s "$READLINE_LINE" | xargs echo
}
bind -x '"\eX": test_exclamation'

I write to bash prompt buffer

$ !1700

If I press Enter, then command with number 1700 from history performs. If I press Shift+Alt+X, I got an output:

!1700

How to change test_exclamation function to print command under number 1700?

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How is $READLINE_LINE defined? –  Ketan Feb 10 at 15:45
    
@Ketan - This is an built in BASH variable. Have a look at gnu.org/software/bash/manual/html_node/… –  Loom Feb 10 at 19:25

1 Answer 1

up vote 2 down vote accepted

Change it to

test_exclamation () {   READLINE_LINE=$( history -p "$READLINE_LINE" ) ;  }
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