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i just updated my Linux distro (Linux Mint 17.3 -> Linux Mint 18) and from TeX Live 2014 to 2016. I have a (large) selfmade documentclass writte in LaTeX3.

Now I tried to compile a document using my class and get the following error:

LaTeX error: "kernel/property-unknown" 
The key property '.choice_code:n' is unknown. 
See the LaTeX3 documentation for further information.

I already searched the web, but the only hint was to update all packages, which I already did with no success.

Has anything changed at l3keys or any other LaTeX3 package, which could create this error?

Addition

I use the following code for generating keys:

\keys_define:nn {edu} {
    rmfont .choice_code:n = {
        \tl_gset:NV \g_edu_rmfont_tl \l_keys_choice_tl
    },
    rmfont .generate_choices:n = {
        computermodern, libertine, palatino
    },
    rmfont .initial:n = libertine
}
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4
  • 2
    .choice_code:n has been removed from l3keys. You need to adapt your code to the changes in l3kernel. – cgnieder Jul 20 '16 at 20:13
  • Thanks for the answer. Is there a documentation, why it was removed or how to replace its functionality? – dawu Jul 20 '16 at 20:25
  • key .choice:, key / choice-a .code:n = code-a? – Henri Menke Jul 20 '16 at 20:37
  • It was removed in revision 5655 so you could check the repository log for information. – cfr Jul 20 '16 at 21:40
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\keys_define:nn { edu }
 {
   rmfont .choices:nn =
    { computermodern, libertine, palatino }
    { \tl_gset:NV \g_edu_rmfont_tl \l_keys_choice_tl } ,
   rmfont .initial:n = libertine
 }
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  • Thanks for your answer! I was a little bit to slow writing my own one. :-) – dawu Jul 24 '16 at 12:32
2

As clemens, Henri Menke and cfr already mentioned (thanks!!), .choice_code:n (as well as .generate_choices:n) were removed from l3keys in revision 5655 of latex3.

After rereading the LaTeX3 interfaces documentation (Section XX.3, pages 176-179), I was able to patch my problem. The example of the question can be adapted to the following:

\keys_define:nn {edu} {
  rmfont .choices:nn = {
    computermodern, libertine, palatino
  }
  {
    \tl_gset:NV \g_edu_rmfont_tl \l_keys_choice_tl
  },
  rmfont .initial:n = libertine
}

Finally, everything works again. Thanks a lot!

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