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There are 2 existing ways to get something like this easily:

  • zsh's history-substring-search plugin
  • bash's ctrl+r mode

The problem with zsh is that it's not on many systems. The problem with bash's implementations is that it requires me to hit ctrl+r first. Also, I know about history-search-backward in bash, but it is anchored to the beginning of the command and not nearly as powerful.

I'm hoping there is a way to bind the up key in bash to make it:

  • copy the currently typed command buffer
  • enter ctrl+r mode
  • paste the currently type command buffer in that mode

and on subsequent presses of the up key

  • hit ctrl+r (search next previous)

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