avoiding quotes in kernel cmdline

[Olaf Hering]

With code like this, the resulting kernel cmdline has backslashes before either 
' or ".
I think var="\"str\"" or var="'str'" has to be used to place either " or ' into 
the variable.
How can I avoid the backslash in the kernel cmdline?

udev_rule="udev.rule=\"mac=${net_default_mac},name=uplink\""
udev_rule="udev.rule='mac=${net_default_mac},name=uplink'"
cmdline="${udev_rule} install=${install} start_shell linemode=1 
console=ttyS0,115200"
menuentry "boot" {
 linux  (http,${ip})/path/to/linux ${cmdline}
 initrd (http,${ip})/path/to/initrd
}

Olaf

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