Feature: multi-line support

[lmccartneystar]

I managed to add support for multi-line blocks, and I want to share it.

What I did was to retrieve the number event of the selected command in fzf, and then use history expansion zle expand-or-complete with that number so zsh gets the correct block of code.

function fzf_history_search() {
  # get event number
  e_num=$(fc -l 0 | fzf --tac | awk '{print $1}')
  
  # HISTORY EXPANSION
  BUFFER="!$e_num"
  zle vi-fetch-history -n $BUFFER
  zle expand-or-complete
}

I modified the script to my needs, didn't include some stuff, but maybe you like some of what i changed, here I leave it:

# do nothing if fzf is not installed
(( ! $+commands[fzf] )) && return

# Bind for fzf history search
(( ! ${+ZSH_FZF_HISTORY_SEARCH_BIND} )) &&
typeset -g ZSH_FZF_HISTORY_SEARCH_BIND='^r'

# Cursor to end-of-line
(( ! ${+ZSH_FZF_HISTORY_SEARCH_END_OF_LINE} )) &&
typeset -g ZSH_FZF_HISTORY_SEARCH_END_OF_LINE=''

# Include event numbers
(( ! ${+ZSH_FZF_HISTORY_SEARCH_EVENT_NUMBERS} )) &&
typeset -g ZSH_FZF_HISTORY_SEARCH_EVENT_NUMBERS=1

# Include full date timestamps in ISO8601 `yyyy-mm-dd hh:mm' format
(( ! ${+ZSH_FZF_HISTORY_SEARCH_DATES_IN_SEARCH} )) &&
typeset -g ZSH_FZF_HISTORY_SEARCH_DATES_IN_SEARCH=1

# Remove duplicate entries in history
(( ! ${+ZSH_FZF_HISTORY_SEARCH_REMOVE_DUPLICATES} )) &&
typeset -g ZSH_FZF_HISTORY_SEARCH_REMOVE_DUPLICATES=''

function fzf_history_search() {
	local cmd_col=1
	local fc_args=

	# SETUP DATES
	if [ -n "${ZSH_FZF_HISTORY_SEARCH_DATES_IN_SEARCH}" ]; then
		cmd_col=3
		fc_args+=' -i'
	fi

	local his_out=$(fc ${=fc_args} -l 0)

	# REMOVE DUPLICATES
	if [ -n "${ZSH_FZF_HISTORY_SEARCH_REMOVE_DUPLICATES}" ]; then
		his_out=$(printf '%s\n' "$his_out" | sort -k $((cmd_col+1)) | tac | uniq -f $((cmd_col)) | sort)
	fi

	# REMOVE NUMBER COLUMNS
	if ! [ -n "${ZSH_FZF_HISTORY_SEARCH_EVENT_NUMBERS}" ]; then
		his_out=$(printf '%s\n' "$his_out" | sed 's/^[[:blank:]]*[[:digit:]]*//')
	fi

	local e_num=$(printf '%s\n' "$his_out" | fzf --tac -q "$BUFFER" | awk '{print $1}')
	if [ -n "$e_num" ]; then
		BUFFER="!$e_num"
		zle vi-fetch-history -n $BUFFER
		zle expand-or-complete
		if [ -n "$ZSH_FZF_HISTORY_SEARCH_END_OF_LINE" ]; then
			zle end-of-buffer-or-history
		fi
	fi
	#zle reset-prompt
}
autoload fzf_history_search
zle -N fzf_history_search
bindkey $ZSH_FZF_HISTORY_SEARCH_BIND fzf_history_search