[latex3-commits] [l3svn] 06/06: Fix expandable D-type arg grabbing when arg. is empty

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joseph pushed a commit to branch master
in repository l3svn.

commit a6b176ce5530f6da5380e0266fd239dbf78fdf96
Author: Joseph Wright <joseph.wright at morningstar2.co.uk>
Date:   Sun Nov 8 20:56:26 2015 +0000

    Fix expandable D-type arg grabbing when arg. is empty
    
    For example
    
        \DeclareExpandableDocumentCommand\foo{d||m}
          {\showtokens{#1::#2}}
    
    otherwise fails with
    
        \foo||{A}
---
 l3packages/xparse/xparse.dtx |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/l3packages/xparse/xparse.dtx b/l3packages/xparse/xparse.dtx
index 253a763..52e2a9e 100644
--- a/l3packages/xparse/xparse.dtx
+++ b/l3packages/xparse/xparse.dtx
@@ -2876,7 +2876,7 @@
   {
     \str_if_eq_x:nnTF
       { \exp_not:o { \use_none:n #3 } }
-      { { \exp_not:o { \use_ii:nnn #3 \q_nil } } }
+      { { \exp_not:o { \use_ii:nnn #3 ? \q_nil } } }
       { \@@_put_arg_expandable:ow { \use_ii:nn #3 } }
       { \@@_put_arg_expandable:ow { \use_none:n #3 } }
         #2 \q_@@ #1

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