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cmd/tailscale/cli: fix running from Xcode

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We were over-eager in running tailscale in GUI mode.
f42ded7acf63e2f3711f6512b701ddeac0e2d7a6 fixed that by
checking for a variety of shell-ish env vars and using those
to force us into CLI mode.

However, for reasons I don't understand, those shell env vars
are present when Xcode runs Tailscale.app on my machine.
(I've changed no configs, modified nothing on a brand new machine.)
Work around that by adding an additional "only in GUI mode" check.

Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>
This commit is contained in:
Josh Bleecher Snyder 2021-05-04 11:00:35 -07:00
parent 4066c606df
commit 7dbbe0c7c7
1 changed files with 8 additions and 0 deletions
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8
cmd/tailscale/cli/cli.go
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@ -51,6 +51,14 @@ func ActLikeCLI() bool {
return false
}
// Xcode adds the -NSDocumentRevisionsDebugMode flag on execution.
// If present, we are almost certainly being run as a GUI.
for _, arg := range os.Args {
if arg == "-NSDocumentRevisionsDebugMode" {
return false
}
}
// Looking at the environment of the GUI Tailscale app (ps eww
// $PID), empirically none of these environment variables are
// present. But all or some of these should be present with