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https://issues.apache.org/jira/browse/WICKET-6890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17821557#comment-17821557
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ASF GitHub Bot commented on WICKET-6890:
----------------------------------------

martin-g commented on code in PR #781:
URL: https://github.com/apache/wicket/pull/781#discussion_r1505527158


##########
wicket-core/src/main/java/org/apache/wicket/settings/DebugSettings.java:
##########
@@ -173,10 +187,24 @@ public DebugSettings 
setLinePreciseReportingOnNewComponentEnabled(boolean enable
         *
         * @param enable
         * @return {@code this} object for chaining
+        * @deprecated use {@link 
#setOutputMarkupContainerClassNameStrategy(ClassOutputStrategy)} instead
         */
+       @Deprecated(forRemoval = true)
        public DebugSettings setOutputMarkupContainerClassName(boolean enable)
        {
-               outputMarkupContainerClassName = enable;
+               outputMarkupContainerClassNameStrategy = enable ? 
ClassOutputStrategy.HTML_COMMENT : ClassOutputStrategy.NONE;
+               return this;
+       }
+
+       /**
+        * Sets the strategy for outputting the class of a markup

Review Comment:
   ```suggestion
         * Sets the strategy for outputting the Java class name of a markup
   ```





> Render debug setting 'outputMarkupContainerClassName` as an attribute
> ---------------------------------------------------------------------
>
>                 Key: WICKET-6890
>                 URL: https://issues.apache.org/jira/browse/WICKET-6890
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket-core
>            Reporter: Martin Tzvetanov Grigorov
>            Assignee: Martin Tzvetanov Grigorov
>            Priority: Major
>             Fix For: 10.0.0-M1
>
>
> As discussed at [https://markmail.org/message/uoxxlnbz56ex7vuk] when 
> org.apache.wicket.settings.DebugSettings#isOutputMarkupContainerClassName() 
> returns true then the MarkupContainer class name should be rendered as an 
> attribute of the component tag instead of as an HTML comment because an HTML 
> comment may break a CSS rule, e.g. by appearing between two sibling HTML 
> elements
> {code:java}
> p + p {color: red;} {code}
>  
> The CSS rule above will change the text color of any paragraph that follows 
> another paragraph. But if an HTML comment appears between them then the rule 
> won't apply.



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