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 Problem with choosing argument specification Tisha Shusho <[log in to unmask]> Thu, 27 Dec 2018 11:56:08 +0330 text/plain (29 lines) Hello List, Merry Christmas and a Happy New Year in advance. I want to apply the function '\exp_args:Ncnn' to '\fontspec_set_family:Nnn '. Please note the family name is defined as a variable l__..._tl. The reason that I want to 'Ncnn' (I think) is that the argument specification of the function '\fontspec_set_family' is 'Nnn'. However, there is no argument specification 'Ncnn' in the signature of '\exp_args'. Also as I understand from the LaTeX3 documents it is not possible to create such a variant for this function with '\cs_generate_variant:Nn'. Furthermore, as '\exp_args_generate:n' is defined in 'l3candidates' which is experimental, at the moment I have decided to use the following: \exp_args:Ncnx \fontspec_set_family:Nnn ' Is it correct to use 'Ncnx' instead of 'Ncnn'? What is the best argument specification to use instead of 'Ncnx' here? Thanks, Tisha