#defkeycomp complete-word \C-xc

# Function to correct a filename.  Can be used as a completion widget,
# or as a function in its own right, in which case it will print the
# corrected filename to standard output.
#
# You can adapt max_approx to the maximum number of mistakes
# which are allowed in total.

emulate -LR zsh
setopt extendedglob

local file="$PREFIX$SUFFIX" trylist
integer approx max_approx=6

[[ -z $WIDGET ]] && file=$1 

if [[ -e "$file" ]]; then
  if [[ -n $WIDGET ]]; then
    compadd "$file"
  else
    print "$file"
  fi
  return
fi

for (( approx = 1; approx <= max_approx; approx++ )); do
  trylist=( (#a$approx)"$file"(N) )
  (( $#trylist )) && break
done
(( $#trylist )) || return 1

if [[ -n $WIDGET ]]; then
  compadd -U "${trylist[@]}"
else
  print "${trylist[@]}"
fi