/usr/share/vim/vim74/indent/zsh.vim is in vim-runtime 2:7.4.052-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | " Vim indent file
" Language: Zsh Shell Script
" Maintainer: Nikolai Weibull <now@bitwi.se>
" Latest Revision: 2006-04-19
if exists("b:did_indent")
finish
endif
" Same as sh indenting for now.
runtime! indent/sh.vim
|