+!! test
+pre-save transform: context links ("pipe trick") with commas (bug 21660)
+!! options
+pst
+!! input
+[[Article (context), context|]]
+[[Article (context),context|]]
+[[Bar:Article (context), context|]]
+[[Bar:Article (context),context|]]
+[[:Bar:Article (context), context|]]
+[[:Bar:Article (context),context|]]
+!! result
+[[Article (context), context|Article]]
+[[Article (context),context|Article]]
+[[Bar:Article (context), context|Article]]
+[[Bar:Article (context),context|Article]]
+[[:Bar:Article (context), context|Article]]
+[[:Bar:Article (context),context|Article]]
+!! end
+