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# Test that we have metadata about what options this system's grep(1) supports,
# and try to create it if not
(
# Create a directory to hold metadata about grep
gcd=$HOME/.cache/grep
if ! [ -d "$gcd" ] ; then
mkdir -p -- "$gcd" || exit
fi
# Write grep(1)'s --help output to a file, even if it's empty
if ! [ -f "$gcd"/help ] ; then
grep --help </dev/null >"$gcd"/help 2>/dev/null || exit
# Iterate through some useful options and create files to show they're
# available
for opt in binary-files color exclude exclude-dir ; do
grep -q -- --"$opt" "$gcd"/help || continue
touch -- "$gcd"/"$opt" || exit
done
fi
)
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