#autoload

# Complete 'globbing flags', i.e., '(#x)'; everything up to the '#' will
# have been "compset -P"'d by the caller.

local ret=1
local -a flags
local preprefix=$IPREFIX

compset -P '([ilIUubBmMcq]|a(|<->))##'
# make sure to not consider anything before the '#'
preprefix=${IPREFIX[$#preprefix,-1]}
if [[ $preprefix = *\#q* ]]; then
  _globquals
  return
elif [[ $preprefix = *q* ]]; then
  _message 'q flag has to be specified by itself'
  return
elif [[ $preprefix = *a(|<->) ]]; then
  _message -e number 'errors'
  if [[ $preprefix = *a ]]; then
    return
  else
    compset -P '<->'
  fi
elif [[ $preprefix = *\#c ]]; then
  _message -e range 'repetitions (min,max) or (exact)'
  return
fi

flags=(
  'i:case insensitive'
  'l:lower case characters match uppercase'
  'I:case sensitive matching'
  's:match start of string'
  'e:match end of string'
  'U:consider all characters to be one byte'
  'u:support multibyte characters in pattern'
)
[[ $compstate[context] = condition ]] && flags+=(
  'b:activate backreferences'
  'B:deactivate backreferences'
  'm:set reference to entire matched data'
  'M:deactivate m flag'
)
flags=( ${flags:#[$preprefix[(R)\#,-1]]*} )
if [[ $IPREFIX != *'#' ]]; then
  flags=( ${flags:#[se]*} )
fi
_describe -t globflags "glob flag" flags -Q -S ')' && ret=0
flags=(
  'a:approximate matching'
  'q:introduce glob qualifier'
  'c:match repetitions of preceding pattern'
)
flags=( ${flags:#[$preprefix[(R)\#,-1]]*} )
if [[ $IPREFIX != *'#' ]]; then
  flags=( ${flags:#[cq]*} )
fi
_describe -t globflags "glob flag" flags -Q -S '' && ret=0

return ret