/usr/share/yash/completion/file is in yash 2.35-2.
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 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | # (C) 2010 magicant
# Completion script for the "file" command.
# Supports POSIX 2008, Fine Free File 5.04, SunOS 5.10, HP-UX 11i v3.
function completion/file {
	if "${WORDS[1]}" --help >/dev/null 2>&1; then
		typeset type=FFF
	else
		typeset type="$(uname 2>/dev/null)"
	fi
	case $type in
		(FFF) typeset long=true ;;
		(*)   typeset long= ;;
	esac
	typeset OPTIONS ARGOPT PREFIX
	OPTIONS=( #>#
	"h ${long:+--no-dereference}; don't follow symbolic links"
	"m: ${long:+--magic-file:}; specify magic files"
	) #<#
	case $type in (FFF|SunOS|HP-UX)
		OPTIONS=("$OPTIONS" #>#
		"c ${long:+--checking-printout}; check the format of the magic file"
		"f: ${long:+--files-from:}; specify a file containing filenames to examine"
		) #<#
	esac
	case $type in
	(FFF)
		OPTIONS=("$OPTIONS" #>#
		"0 --print0; separate output lines with null byte rather than newline"
		"b --brief; don't print the filename before each file type description"
		"C --compile; compile a magic file"
		"d --debug; print debugging messages"
		"e: --exclude:; specify a type of test to skip"
		"F: --separator:; specify a separator shown between filenames and file types"
		"i --mime; print mime types/encodings rather than human-readable results"
		"k --keep-going; print all matching file types"
		"L --dereference; follow symbolic links"
		"N --no-pad; don't align output"
		"n --no-buffer; don't buffer output"
		"p --preserve-date; restore the access time of examined files"
		"r --raw; don't escape unprintable characters"
		"s --special-files; read and examine non-regular files"
		"v --version; print version info"
		"z --uncompress; examine contents of compressed files"
		"--apple; print Apple creator/type"
		"--help"
		"--mime-type; print mime types only"
		"--mime-encoding; print mime encoding names only"
		) #<#
		;;
	(*) # POSIX options
		OPTIONS=("$OPTIONS" #>#
		"d; do position/context-sensitive default system tests"
		"i; don't examine the contents of regular files"
		"M:; specify a file containing position-sensitive tests"
		) #<#
		;;
	esac
	command -f completion//parseoptions ${long:+-es}
	case $ARGOPT in
	(-)
		command -f completion//completeoptions
		;;
	(e|--exclude) #>>#
		complete -P "$PREFIX" -D "EMX application type" apptype
		complete -P "$PREFIX" -D "text encoding" encoding
		complete -P "$PREFIX" -D "text tokens" tokens
		complete -P "$PREFIX" -D "Compound Document Files details" cdf
		complete -P "$PREFIX" -D "contents of compressed files" compress
		complete -P "$PREFIX" -D "ELF file details" elf
		complete -P "$PREFIX" -D "magic file test" soft
		complete -P "$PREFIX" -D "contents of tar files" tar
		;; #<<#
	(F|--separator)
		;;
	(*)
		complete -P "$PREFIX" -f
		;;
	esac
}
# vim: set ft=sh ts=8 sts=8 sw=8 noet:
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