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From: Vincent Bernat <bernat@luffy.cx>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: make history-complete-older do nothing on empty string
References: <CGME20180418052832epcas2p1df623a44c88edae226f65a2d5edc90f2@epcas2p1.samsung.com>
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	<20180418135817.7edca58c@camnpupstephen.cam.scsc.local>
	<CAH+w=7ZJd8Ruf7-Pwozjyt=zcQKE3ND5w=vE=QuSPfHyo2nwYA@mail.gmail.com>
Date: Wed, 18 Apr 2018 18:28:02 +0200
In-Reply-To: <CAH+w=7ZJd8Ruf7-Pwozjyt=zcQKE3ND5w=vE=QuSPfHyo2nwYA@mail.gmail.com>
	(Bart Schaefer's message of "Wed, 18 Apr 2018 09:11:11 -0700")
Message-ID: <878t9k4gz1.fsf@luffy.cx>
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 =E2=9D=A6 18 avril 2018 09:11 -0700, Bart Schaefer <schaefer@brasslantern.=
com>=C2=A0:

> You'd want a wrapper around _history_complete_word to check the state
> of the editor buffer, or you could copy that function to a location at
> the front of your $fpath and modify it.  The test you want is probably
> something like:
>
> [[ ${LBUFFER:- } =3D=3D ' ' && ${RBUFFER:- } =3D=3D ' ' ]] && return 1
>
> There's a space after :- in both of those references.  This means "if
> either the buffer is empty or the cursor is sitting in the middle of a
> run of spaces, then return" (i.e. don't complete anything).

Thanks, I am using this and it works as I would expect:

#v+
# Don't do history completion on empty words
function vbe-history-complete-older() {
  [[ ${LBUFFER[-1]} =3D=3D ' ' || ${LBUFFER} =3D=3D '' ]] && return 1
  zle _history-complete-older "$@"
}
zle -N vbe-history-complete-older
bindkey "^[/" vbe-history-complete-older
#v-

--=20
Harp not on that string.
		-- William Shakespeare, "Henry VI"