--password-command is run twice when using --daemon #7341

When using the --daemon flag to daemonize the rclone process, the command given to --password-command is run twice. I guess in some cases this is not an issue, but in my case, the password-command is pass show rclone/config which retrieves the password from a gpg encrypted file through pass, and that requires me to touch a security key. So instead of touching it once, I have to touch it twice.

Starting rclone like this requires only a single authentication (touch of the security key):

rclone mount gdrive: ~/gdrive --password-command="pass show rclone/config"

And starting it like this requires double authentication (touching it two times):

rclone mount gdrive: ~/gdrive --password-command="pass show rclone/config" --daemon

What is your rclone version (output from rclone version)

~ on master ❯ rclone version
rclone v1.63.1
- os/version: arch (64 bit)
- os/kernel: 6.5.3-arch1-1 (x86_64)
- os/type: linux
- os/arch: amd64
- go/version: go1.20.6
- go/linking: dynamic
- go/tags: none

Which cloud storage system are you using? (e.g. Google Drive)

I'm using google drive in my example.

A log from the command with the -vv flag (e.g. output from rclone -vv copy /tmp remote:tmp)

~ on master ❯ rclone mount gdrive: ~/gdrive --password-command="pass show rclone/config" --daemon -vv
<7>DEBUG : rclone: Version "v1.63.1" starting with parameters ["rclone" "mount" "gdrive:" "/home/phisch/gdrive" "--password-command=pass show rclone/config" "--daemon" "-vv"]
<7>DEBUG : rclone: systemd logging support activated
<7>DEBUG : Creating backend with remote "gdrive:"
<7>DEBUG : saving configKey to temp file
<7>DEBUG : attempting to obtain configKey from temp file /tmp/rclone1758618437
<7>DEBUG : using _RCLONE_CONFIG_KEY_FILE for configKey
<7>DEBUG : Using config file from "/home/phisch/.config/rclone/rclone.conf"
<7>DEBUG : rclone: Version "v1.63.1" finishing with parameters ["/usr/bin/rclone" "mount" "gdrive:" "/home/phisch/gdrive" "--password-command=pass show rclone/config" "--daemon" "-vv"]

This log shows that rclone is run twice. So is there a way to avoid this, or have the processes share the result of the password-command?

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