/usr/share/vim/vim80/indent/xslt.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
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 12 | " Vim indent file
" Language: XSLT .xslt files
" Maintainer: David Fishburn <fishburn@ianywhere.com>
" Last Change: Wed May 14 2003 8:48:41 PM
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
finish
endif
" Use XML formatting rules
runtime! indent/xml.vim
|