Btw, why aren't digit = characters 0-9 in the regexp you use in sm-safe-table? More = generally, why not all of the Ascii characters are there? isn't smart = kerning performed for them as well? Come to think about that, = what about Latin…
When subdir-objects option i= s enabled (without subdir-objects all works fine) and xxx_Sources contains = paths stored in variables when automake tries to create directory named by = variable name not value.