"has_option: command not found" multiple times in .xsession-errors

[Herzfinsternis]

Distribution

Mint 22.1

Package version

6.4.8

Graphics hardware in use

AMD ATI Radeon Vega Series / Radeon Vega Mobile Series (AMD Ryzen 5 PRO 3400G)

Frequency

Always

Bug description

I saw "has_option: command not found" several times in .xsession-errors:

/etc/X11/Xsession.d/30x11-common_xresources: line 16: has_option: command not found
/etc/X11/Xsession.d/75dbus_dbus-launch: line 9: has_option: command not found
/etc/X11/Xsession.d/90x11-common_ssh-agent: line 9: has_option: command not found

Steps to reproduce

I have only recently installed Linux Mint, so this should be reproducible with a new installation.

Expected behavior

The function has_option should be found. It's in /etc/X11/Xsession.

Additional information

In /usr/sbin/lightdm-session at line 85+86 is this piece of code:

# Run all system xinitrc shell scripts.
xinitdir="/etc/X11/xinit/xinitrc.d"

However, this directory doesn't exsist. So I changed it to:
xinitdir="/etc/X11/xinit"
In there is xinitrc which runs /etc/X11/Xsession.

That fixed the error on my machine.