oh-my-zsh/lib/history.zsh

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## History wrapper
function omz_history {
# Delete the history file if `-c' argument provided.
# This won't affect the `history' command output until the next login.
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zparseopts -E c=clear l=list
if [[ -n "$clear" ]]; then
# if -c provided, clobber the history file
echo -n >| "$HISTFILE"
echo >&2 History file deleted. Reload the session to see its effects.
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elif [[ -n "$list" ]]; then
# if -l provided, run as if calling `fc' directly
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builtin fc "$@"
else
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# otherwise, call `fc -l 1` to show all available
# history (and pass additional parameters)
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builtin fc "$@" -l 1
fi
}
# Timestamp format
case $HIST_STAMPS in
"mm/dd/yyyy") alias history='omz_history -f' ;;
"dd.mm.yyyy") alias history='omz_history -E' ;;
"yyyy-mm-dd") alias history='omz_history -i' ;;
*) alias history='omz_history' ;;
esac
## History file configuration
[ -z "$HISTFILE" ] && HISTFILE="$HOME/.zsh_history"
HISTSIZE=50000
SAVEHIST=10000
## History command configuration
setopt extended_history # record timestamp of command in HISTFILE
setopt hist_expire_dups_first # delete duplicates first when HISTFILE size exceeds HISTSIZE
setopt hist_ignore_dups # ignore duplicated commands history list
setopt hist_ignore_space # ignore commands that start with space
setopt hist_verify # show command with history expansion to user before running it
setopt inc_append_history # add commands to HISTFILE in order of execution
setopt share_history # share command history data