[zsh] emulate -L zsh to avoid issues with incompatible options

Close #858

Author: junegunn

shell/completion.zsh

@@ -46,7 +46,7 @@ __fzf_generic_path_completion() {
   tail=$6
   fzf="$(__fzfcmd_complete)"
 
-  setopt localoptions nonomatch
+  setopt nonomatch
   dir="$base"
   while [ 1 ]; do
     if [[ -z "$dir" || -d ${~dir} ]]; then
@@ -142,8 +142,8 @@ _fzf_complete_unalias() {
 }
 
 fzf-completion() {
+  emulate -L zsh
   local tokens cmd prefix trigger tail fzf matches lbuf d_cmds
-  setopt localoptions noshwordsplit noksh_arrays
 
   # http://zsh.sourceforge.net/FAQ/zshfaq03.html
   # http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags

shell/key-bindings.zsh

@@ -27,6 +27,7 @@ __fzfcmd() {
 }
 
 fzf-file-widget() {
+  emulate -L zsh
   LBUFFER="${LBUFFER}$(__fsel)"
   local ret=$?
   zle redisplay
@@ -38,9 +39,10 @@ bindkey '^T' fzf-file-widget
 
 # ALT-C - cd into the selected directory
 fzf-cd-widget() {
+  emulate -L zsh
+  setopt pipefail 2> /dev/null
   local cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
     -o -type d -print 2> /dev/null | cut -b3-"}"
-  setopt localoptions pipefail 2> /dev/null
   local dir="$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS" $(__fzfcmd) +m)"
   if [[ -z "$dir" ]]; then
     zle redisplay
@@ -57,8 +59,9 @@ bindkey '\ec' fzf-cd-widget
 
 # CTRL-R - Paste the selected command from history into the command line
 fzf-history-widget() {
+  emulate -L zsh
+  setopt pipefail 2> /dev/null
   local selected num
-  setopt localoptions noglobsubst pipefail 2> /dev/null
   selected=( $(fc -l 1 |
     FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS +s --tac -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort $FZF_CTRL_R_OPTS --query=${(q)LBUFFER} +m" $(__fzfcmd)) )
   local ret=$?