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cc05f407bc
In some cases we need to escape make variables and pass them to printf(1). This is the case in our fs infra, where we want to shoe-horn the commands to generate the filesystems in the fakeroot script, or the devices, permissions and users tables to their respective files. We currently do so by replacing $(sep) with the literal '\n' but that's not enough. This does not protect against strings with an embedded '%' or a backslash. Add a new macro that properly escapes a string and calls printf(1), so that we get the expected output. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>