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From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <131209230927.ZM8394@torch.brasslantern.com>
Date: Mon, 09 Dec 2013 23:09:27 -0800
In-reply-to: <l830ra$89p$1@ger.gmane.org>
Comments: In reply to Jan Larres <jan@majutsushi.net>
 "Re: shared history but recalling history in current terminal" (Dec  9,
 12:54pm)
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Subject: Re: shared history but recalling history in current terminal
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On Dec 9, 12:54pm, Jan Larres wrote:
} Subject: Re: shared history but recalling history in current terminal
}
} After some more investigation I noticed that unsetting local-history
} does actually work, but re-running the widget after entering something
} does not. So if I have this in my zshrc:
} 
}   bindkey '^r' history-incremental-pattern-search-backward
} 
} If I then press ^r and enter some word it gets correctly found in the
} global history, but if I press ^r again to search for an earlier
} occurence it always fails. Is there any way to fix this?

Since (as previously discussed) we don't have a hook for isearch-init,
the only way to fix that one is to rebind the widget:

    history-incremental-pattern-search-backward() {
	if [[ $LASTWIDGET != history-incremental-pattern-search-backward ]]
	then NUMERIC=0 zle set-local-history
	fi
	zle .history-incremental-pattern-search-backward "$@"
    }
    zle -N history-incremental-pattern-search-backward

I haven't actually tested that but it should be close to something that
works ...