[latex3-commits] [git/LaTeX3-latex3-pdfresources] master: starting unknown choices handling (085ff7c)

[Ulrike Fischer]

Repository : https://github.com/latex3/pdfresources
On branch  : master
Link       : https://github.com/latex3/pdfresources/commit/085ff7c48e8739b2d8210e901d9632aed5ebe290

>---------------------------------------------------------------

commit 085ff7c48e8739b2d8210e901d9632aed5ebe290
Author: Ulrike Fischer <fischer at troubleshooting-tex.de>
Date:   Wed Apr 1 00:49:48 2020 +0200

    starting unknown choices  handling


>---------------------------------------------------------------

085ff7c48e8739b2d8210e901d9632aed5ebe290
 hgeneric-experimental.def | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/hgeneric-experimental.def b/hgeneric-experimental.def
index b89527c..152c871 100644
--- a/hgeneric-experimental.def
+++ b/hgeneric-experimental.def
@@ -100,6 +100,16 @@
   {
     unknown~key~#2~of~module~’#1’~set~to~’#3’.
   }
+\msg_new:nnn
+  { hyp }
+  { unknown-choice }
+  {
+    Value~'#3'~is~invalid~for~key~'#1'.\\
+    The~key~accepts~only~the~choices\\
+    \clist_map_function:nN { #2 }\__hyp_clist_display:n
+    An~empty~value~removes~the~setting.
+  }
+\cs_new:Npn \__hyp_clist_display:n #1 {*~#1\\}
 %% I require the bookmark package to get rid of some of the bookmarks code.
 % but the testing code doesn't work.
 % !!!!!!!!!!!!!!!!!!!!! to do !!!!!!!!!!!!!!!!!!!!!
@@ -818,6 +828,11 @@
      }
    ,pdfdirection /  .code:n =
      { \pdf_catalog_gremove:n { ViewerPreferences / Direction } }
+   ,pdfdirection / unknown .code:n =
+       \msg_error:nnxxx { hyp } { unknown-choice }
+         { pdfdirection } % Name of choice key
+         { L2R , R2L } % Valid choices
+         { \exp_not:n {#1} }, % Invalid choice given
    ,pdfduplex    .choices:nn =
      {Simplex, DuplexFlipShortEdge, DuplexFlipLongEdge}
      {