A fuzzy finder to search history in the Z Shell.

hist.sh

function fuzzy-search-history() {
	# Assemble the list of commands found in history,
	# such that it only contains the most recent occurrence 
	# of a particular command.
	typeset -a entries=()
	for line in ${(f)"$(fc -nl 1)"}; do 
		entries+=${${line//\\n/ }//\\t/ }; 
	done
	BUFFER=$(
		print -l ${(Oau)entries}	\
			| tr -cd '[:print:]\n' \
			| grep \
				-a \
				--invert-match \
				--regexp '[[:alnum:]]\{30\}' \
				--regexp '[^[:space:]]\{79\}' \
				--regexp '^[[:cntrl:]]*$' \
				--regexp '^[^[:alnum:]]' \
				--regexp '^[^[:space:]]*$' \
			| fzf \
				--bind 'backward-eof:abort' \
				--exact \
				--height='40%' \
				--min-height='5' \
				--no-sort \
				--no-multi \
				--reverse \
				--query=${LBUFFER}
		)
	CURSOR=${#BUFFER}
	zle reset-prompt
	zle vi-add-eol
}
zle -N fuzzy-search-history
bindkey -v '^O' fuzzy-search-history
bindkey -a '^O' fuzzy-search-history