Reinstate Omittable<>::omitted (deprecated)

To ease on back-compatibility.

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/util.h b/lib/util.h
index 15c9fec8..5be62382 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -83,6 +83,12 @@ public:
         return this->has_value() ? base_type::operator*() : this->emplace();
     }
 
+    [[deprecated("Use '!o' or '!o.has_value()' instead of 'o.omitted()'")]]
+    bool omitted() const
+    {
+        return !this->has_value();
+    }
+
     /// Merge the value from another Omittable
     /// \return true if \p other is not omitted and the value of
     ///         the current Omittable was different (or omitted);