fixed: if or unless can be used. (#1948)

ramalama · web-flow · commit b558339821cc · 2025-10-29T21:08:45.000+01:00
Old implementation forced both to be present
diff --git a/etc/phing-grammar.rng b/etc/phing-grammar.rng
@@ -1876,7 +1876,11 @@
                         <attribute name="message"/>
                         <attribute name="msg"/>
                     </choice>
+                </optional>
+                <optional>
                     <attribute name="if"/>
+                </optional>
+                <optional>
                     <attribute name="unless"/>
                 </optional>
             </interleave>
