Will flagging be undoable or at least require confirmation? I can see the link already but I don't want to run any tests in case it's not undoable. I can think

Will flagging be undoable or at least require confirmation? I can see the link already but I don't want to run any tests in case it's not undoable. I can think of many times where I've unintentionally clicked the downvote button while meaning to upvote, and had no way to "unbury" the good comment I mean to hoist. I'd hate to accidentally flag and not be able to rectify the situation.