blob: fd9d1e8cffa658d92015b453bc678e12888667c6 (
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
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
|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
without-env ENVVAR PATH -- COMMAND...
without-env -h
EOF
}
help() {
cat <<-'EOF'
Options:
-h, --help show this message
Examples:
Execute "command -V" filtering ~/bin, to get where "w3m" is
in $PATH, other than ~/bin:
$ without-env PATH ~/bin -- command -v w3m
Compile foo.c, excluding ~/.local/include
from $C_INCLUDE_PATH:
$ without-env C_INCLUDE_PATH ~/.local/include -- cc -co foo.o foo.c
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
while getopts 'h' flag; do
case "$flag" in
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
eval "$(assert-arg "${1:-}" 'ENVVAR')"
eval "$(assert-arg "${2:-}" 'PATH')"
eval "export $1=\"\$(echo \"\$$1\" | sed \"s|\$2:||g\")\""
shift # drop $1
shift # drop $2
if [ "${1:-}" = '--' ]; then
shift # drop --
fi
"$@"
|
