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 Re: Generic quark test Will Robertson <[log in to unmask]> Sun, 14 Sep 2008 17:41:34 +0930 text/plain (34 lines) On 14/09/2008, at 4:49 PM, Joseph Wright wrote: > It might be handy to have a check to see if a value is any quark, for > "make safe" code. So far, I've ended up with: > > \def_new:Npn \if_quark:NT #1 { > \exp_after:NN \exp_after:NN \exp_after:NN \if_quark:w > \exp_after:NN \token_to_string:N #1 \q_stop > } > > \def_new:Npn \if_quark:wT #1#2#3\q_stop { > \int_compare:nNnT {\char_value_uccode:n{#2}} = {Q} > } > > which seems to work but I'm worried may not be suitable more > generally. > Any ideas? Hmmm. What about if quarks contained an additional parameter to make this check more robust? Let's say    \def_new:Npn \quark_new:N #1{\tlp_new:Nn #1{\q_quark#1}} Oh. But I guess you don't want to be doing any expansion in the \if_quark function so you wouldn't be able to see if \q_quark was there or not. Never mind, I suppose. W `