# Example of a widget that takes a vi motion

# Filter part of buffer corresponding to a vi motion through an external
# program.

# To enable with vi compatible bindings use:
#   autoload -Uz vi-pipe
#   bindkey -a '!' vi-pipe

autoload -Uz read-from-minibuffer
local _save_cut="$CUTBUFFER" REPLY

# Use the standard vi-delete to accept a vi motion.
zle .vi-delete || return
read-from-minibuffer "!"
local _save_cur=$CURSOR

# cut buffer contains the deleted text and can be modified
CUTBUFFER="$(eval $REPLY <<<$CUTBUFFER)"

# put the modified text back in position.
if [[ CURSOR -eq 0 || $BUFFER[CURSOR] = $'\n' ]]; then
  # at the beginning of a line, vi-delete won't have moved the cursor
  # back to a previous line
  zle .vi-put-before -n 1
else
  zle .vi-put-after -n 1
fi

# restore cut buffer and cursor to the start of the range
CUTBUFFER="$_save_cut" CURSOR="$_save_cur"