[completion] Use --wrap option in process completion

And remove the short preview window for showing the whole command.

Because it is important to be able to see the whole command before
deciding to kill it.

shell/completion.bash

@@ -167,6 +167,7 @@ _fzf_opts_completion() {
     --version
     --with-nth
     --with-shell
+    --wrap
     --zsh
     -0 --exit-0
     -1 --select-1
@@ -407,7 +408,7 @@ _fzf_complete_kill() {
 }
 
 _fzf_proc_completion() {
-  _fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+  _fzf_complete -m --header-lines=1 --no-preview --wrap -- "$@" < <(
     command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
       command ps -eo user,pid,ppid,time,args # For BusyBox
   )

shell/completion.zsh

@@ -298,7 +298,7 @@ _fzf_complete_unalias() {
 }
 
 _fzf_complete_kill() {
-  _fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+  _fzf_complete -m --header-lines=1 --no-preview --wrap -- "$@" < <(
     command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
       command ps -eo user,pid,ppid,time,args # For BusyBox
   )