blob: d593ad2763948a52959a9b8c7f26a318e89ce1a4 (
plain) (
blame)
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
|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
pre PREFIX < STDIN
EOF
}
SEP=:
while getopts 'n' flag; do
case "$flag" in
(n)
SEP=
;;
(*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
PREFIX="${1:-}"
eval "$(assert-arg -- "$PREFIX" 'PREFIX')"
# FIXME: using "while" so we avoid GNU sed's buffering
while read -r line; do
printf '%s%s %s\n' "$PREFIX" "$SEP" "$line"
done
|
