Modifications to fzf keybindings (zsh) for Ctrl-R to allow Space and Ctrl-E to select but not execute selection

key-bindings.zsh

#     ____      ____
#    / __/___  / __/
#   / /_/_  / / /_
#  / __/ / /_/ __/
# /_/   /___/_/ key-bindings.zsh
#
# - $FZF_TMUX_OPTS
# - $FZF_CTRL_T_COMMAND
# - $FZF_CTRL_T_OPTS
# - $FZF_CTRL_R_OPTS
# - $FZF_ALT_C_COMMAND
# - $FZF_ALT_C_OPTS

# Key bindings
# ------------

# The code at the top and the bottom of this file is the same as in completion.zsh.
# Refer to that file for explanation.
if 'zmodload' 'zsh/parameter' 2>'/dev/null' && (( ${+options} )); then
  __fzf_key_bindings_options="options=(${(j: :)${(kv)options[@]}})"
else
  () {
    __fzf_key_bindings_options="setopt"
    'local' '__fzf_opt'
    for __fzf_opt in "${(@)${(@f)$(set -o)}%% *}"; do
      if [[ -o "$__fzf_opt" ]]; then
        __fzf_key_bindings_options+=" -o $__fzf_opt"
      else
        __fzf_key_bindings_options+=" +o $__fzf_opt"
      fi
    done
  }
fi

'emulate' 'zsh' '-o' 'no_aliases'

{

[[ -o interactive ]] || return 0

# CTRL-T - Paste the selected file path(s) into the command line
__fsel() {
  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
    -o -type f -print \
    -o -type d -print \
    -o -type l -print 2> /dev/null | cut -b3-"}"
  setopt localoptions pipefail no_aliases 2> /dev/null
  local item
  eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS" $(__fzfcmd) -m "$@" | while read item; do
    echo -n "${(q)item} "
  done
  local ret=$?
  echo
  return $ret
}

__fzfcmd() {
  [ -n "$TMUX_PANE" ] && { [ "${FZF_TMUX:-0}" != 0 ] || [ -n "$FZF_TMUX_OPTS" ]; } &&
    echo "fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- " || echo "fzf"
}

fzf-file-widget() {
  LBUFFER="${LBUFFER}$(__fsel)"
  local ret=$?
  zle reset-prompt
  return $ret
}
zle     -N   fzf-file-widget
bindkey '^T' fzf-file-widget

# ALT-C - cd into the selected directory
fzf-cd-widget() {
  local cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
    -o -type d -print 2> /dev/null | cut -b3-"}"
  setopt localoptions pipefail no_aliases 2> /dev/null
  local dir="$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS" $(__fzfcmd) +m)"
  if [[ -z "$dir" ]]; then
    zle redisplay
    return 0
  fi
  zle push-line # Clear buffer. Auto-restored on next prompt.
  BUFFER="cd ${(q)dir}"
  zle accept-line
  local ret=$?
  unset dir # ensure this doesn't end up appearing in prompt expansion
  zle reset-prompt
  return $ret
}
zle     -N    fzf-cd-widget
bindkey '\ec' fzf-cd-widget

# CTRL-R - Paste the selected command from history into the command line
fzf-history-widget() {
  local selected num
  setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases 2> /dev/null
  selected=( $(fc -rl 1 | perl -ne 'print if !$seen{(/^\s*[0-9]+\**\s+(.*)/, $1)}++' |
    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort,ctrl-z:ignore --expect=ctrl-e --expect=space $FZF_CTRL_R_OPTS --query=${(qqq)LBUFFER} +m" $(__fzfcmd)) )
  local ret=$?
  if [ -n "$selected" ]; then
    local accept=0
    if [[ $selected[1] = ctrl-e ]]; then
      accept=1
      shift selected
    fi
    if [[ $selected[1] = space ]]; then
      accept=2
      shift selected
    fi
    num=$selected[1]
    if [ -n "$num" ]; then
      zle vi-fetch-history -n $num
      [[ $accept = 0 ]] && zle accept-line
      [[ $accept = 2 ]] && LBUFFER="$LBUFFER "
    fi
  fi
  zle reset-prompt
  return $ret
}
zle     -N   fzf-history-widget
bindkey '^R' fzf-history-widget

} always {
  eval $__fzf_key_bindings_options
  'unset' '__fzf_key_bindings_options'
}

key-bindings.zsh.diff

@@ -94,12 +94,23 @@
   local selected num
   setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases 2> /dev/null
   selected=( $(fc -rl 1 | perl -ne 'print if !$seen{(/^\s*[0-9]+\**\s+(.*)/, $1)}++' |
-    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort,ctrl-z:ignore $FZF_CTRL_R_OPTS --query=${(qqq)LBUFFER} +m" $(__fzfcmd)) )
+    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort,ctrl-z:ignore --expect=ctrl-e --expect=space $FZF_CTRL_R_OPTS --query=${(qqq)LBUFFER} +m" $(__fzfcmd)) )
   local ret=$?
   if [ -n "$selected" ]; then
+    local accept=0
+    if [[ $selected[1] = ctrl-e ]]; then
+      accept=1
+      shift selected
+    fi
+    if [[ $selected[1] = space ]]; then
+      accept=2
+      shift selected
+    fi
     num=$selected[1]
     if [ -n "$num" ]; then
       zle vi-fetch-history -n $num
+      [[ $accept = 0 ]] && zle accept-line
+      [[ $accept = 2 ]] && LBUFFER="$LBUFFER "
     fi
   fi
   zle reset-prompt