How to search for "commented by"

I wish to request a feature of having the "commented by" feature available to edit for builds that finished but did not originally have a "commented by" item. I cannot search for that string?
1.Search the community here searches for youtrack, etc irrelevant hits.
2.Google is useless.
3."My stuff" here does not include the ticket items.
Here is the button I'd like;
130606.CIB-585.Tc-WISH.CommentedByForOldBuilds.png

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