Fix \prop_set_eq:NN for twice the same linked prop

latex3 · Feb 13, 2024 · 9f18c70 · 9f18c70
1 parent c512f5b
commit 9f18c70
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Showing 3 changed files with 17 additions and 1 deletion.
diff --git a/l3kernel/l3prop.dtx b/l3kernel/l3prop.dtx
@@ -1147,7 +1147,7 @@
 \cs_generate_variant:Nn \prop_gset_eq:NN { Nc , cN , cc }
 \cs_new_protected:Npn \@@_set_eq:NNNN #1#2#3#4
   {
-    \cs_if_eq:NNF #1#2
+    \cs_if_eq:NNF #3#4
       {
         \@@_if_flat:NTF #3
           {

diff --git a/l3kernel/testfiles/m3prop007.lvt b/l3kernel/testfiles/m3prop007.lvt
@@ -561,5 +561,12 @@
       }
   }
 
+\TEST { prop_set_eq~same~prop }
+  {
+    \prop_set_from_keyval:Nn \l_a_prop { a = b , c = d }
+    \prop_set_eq:NN \l_a_prop \l_a_prop
+    \prop_show:N \l_a_prop
+  }
+
 \END
 
diff --git a/l3kernel/testfiles/m3prop007.tlg b/l3kernel/testfiles/m3prop007.tlg
@@ -645,3 +645,12 @@ TEST 28: prop to keyval in halign
 0
 1
 ============================================================
+============================================================
+TEST 29: prop_set_eq same prop
+============================================================
+The linked property list \l_a_prop contains the pairs (without outer braces):
+>  {a}  =>  {b}
+>  {c}  =>  {d}.
+<recently read> }
+l. ...  }
+============================================================