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From: Timothee Cour <timothee.cour2@gmail.com>
Date: Thu, 23 Mar 2017 17:58:56 -0700
Message-ID: <CAM4j=kPAiOOfMRuoD+T9QpN9YBrwV_2w4E+zhbnenZDqQnGTHA@mail.gmail.com>
Subject: how to prevent writing to HISTFILE with custom zshaddhistory?
To: Zsh Users <zsh-users@zsh.org>
Content-Type: multipart/alternative; boundary=94eb2c0686988e58b0054b6f7f50

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Content-Type: text/plain; charset=UTF-8

neither SHARE_HISTORY, INC_APPEND_HISTORY, INC_APPEND_HISTORY_TIME is good
enough in my use case so i want to do the work in zshaddhistory:

unsetopt SHARE_HISTORY

zshaddhistory(){
local COMMAND_STR=${1%%$'\n'}
print -r -- "$COMMAND_STR" >> $HISTFILE
# from http://zsh.sourceforge.net/Doc/Release/Functions.html to avoid
writing to $HISTFILE
return 2
}

but this results in duplicate entries to $HISTFILE

how do I prevent the automatic writing to $HISTFILE?

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