/usr/share/zsh/4.3.11/functions
Edit: /usr/share/zsh/4.3.11/functions/_source (226B)
#compdef source .
if [[ CURRENT -ge 3 ]]; then
compset -n 2
_normal
else
if [[ -prefix */ && ! -o pathdirs ]]; then
_files
elif [[ $service = . ]]; then
_files -W path
else
_files -W "(. $path)"
fi
fi