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all: use Go 1.18's strings.Cut

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Change-Id: I6ec562cc1f687600758deae1c9d7dbd0d04004cb
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-03-16 14:25:31 -07:00
committed by Brad Fitzpatrick
parent 1f22507c06
commit 61ee72940c
7 changed files with 17 additions and 31 deletions
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3
wgengine/filter/tailcfg.go
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@@ -114,8 +114,7 @@ func parseIPSet(arg string, bits *int) ([]netaddr.IPPrefix, error) {
return []netaddr.IPPrefix{pfx}, nil
}
if strings.Count(arg, "-") == 1 {
i := strings.Index(arg, "-")
ip1s, ip2s := arg[:i], arg[i+1:]
ip1s, ip2s, _ := strings.Cut(arg, "-")
ip1, err := netaddr.ParseIP(ip1s)
if err != nil {
return nil, err