zew-rotate-shell-words

# Transpose shell-words, i.e. parts of lines obtained by (Z) flag, i.e.
# as if zsh parsed the line.
#
# Code to activate the functionality with binding to Alt-t:
# autoload zew-rotate-shell-words
# zle -N zew-rotate-shell-words
# zle -N zew-rotate-shell-words-backwards zew-rotate-shell-words
# bindkey '^[r' zew-rotate-shell-words
# bindkey '^[R' zew-rotate-shell-words-backwards

local curcontext=":zle:$WIDGET"
local MATCH MBEGIN MEND i

# Prepare output variables for zew-process-buffer
local ZEW_PB_WORDS ZEW_PB_WORDS_BEGINNINGS ZEW_PB_SPACES
local ZEW_PB_SELECTED_WORD ZEW_PB_LEFT ZEW_PB_RIGHT

autoload zew-process-buffer
zew-process-buffer "$BUFFER"

# No active shell word found (shouldn't happen) (-1)
# or it's the first shell word (1), or word before first
# shell word (0)? Return
[ "$ZEW_PB_SELECTED_WORD" -le 1 ] && return 0

# Rotate
if [[ "$WIDGET" != *-backwards ]]; then 
    ZEW_PB_WORDS=( "${ZEW_PB_WORDS[-1]}" "${(@)ZEW_PB_WORDS[1,-2]}" )
else
    ZEW_PB_WORDS=( "${(@)ZEW_PB_WORDS[2,-1]}" "${ZEW_PB_WORDS[1]}" )
fi

# Build BUFFER
integer size="${#ZEW_PB_WORDS}"
integer newcursor
buf=""

for (( i=1; i<=size; i++ )); do
    buf+="$ZEW_PB_SPACES[i]$ZEW_PB_WORDS[i]"
    [ "$i" = "$ZEW_PB_SELECTED_WORD" ] && newcursor="$#buf"
done

# Append final white spaces
buf+="$ZEW_PB_SPACES[i]"

BUFFER="$buf"
CURSOR="$newcursor"

return 0

# vim:ft=zsh