[#7477] Add Field.concat(char...)

jOOQ/src/main/java/org/jooq/Field.java

@@ -3375,6 +3375,16 @@ extends
     @Support
     Field<String> concat(String... values);
 
+    /**
+     * This method is part of the pre-2.0 API. This API is maintained for
+     * backwards-compatibility. It may be removed in the future. Consider using
+     * equivalent methods from {@link DSLContext}
+     *
+     * @see DSL#concat(String...)
+     */
+    @Support
+    Field<String> concat(char... values);
+
     /**
      * This method is part of the pre-2.0 API. This API is maintained for
      * backwards-compatibility. It may be removed in the future. Consider using

jOOQ/src/main/java/org/jooq/impl/AbstractField.java

@@ -1929,6 +1929,11 @@ abstract class AbstractField<T> extends AbstractNamed implements Field<T> {
         return DSL.concat(Tools.combine(this, Tools.fields(values).toArray(EMPTY_FIELD)));
     }
 
+    @Override
+    public final Field<String> concat(char... values) {
+        return concat(new String(values));
+    }
+
     @Override
     @Deprecated
     public final Field<String> substring(int startingPosition) {