/usr/share/zsh/4.3.11/functions
Edit: /usr/share/zsh/4.3.11/functions/_delimiters (329B)
#autoload
# Simple function to offer delimiters for modifiers and qualifers.
# Single argument is tag to use.
local expl
local -a list
zstyle -a ":completion:${curcontext}:$1" delimiters list ||
list=(: + / - %)
if (( ${#list} )); then
_wanted delimiters expl delimiter compadd -S '' -a list
else
_message delimiter
fi