Disarm spam links in comment edit history by adding rel=nofollow

[thebuck]

Edit history should probably generally be hidden from search engines. So add a rel="nofollow" attribute to both edit history links of each comment:

Last edited ... (previous) (diff)

Example spam is in last comment of #16903.

[waddlesplash]

I'm not sure how possible this is in Trac. In general we prefer to just delete spam comments; I've taken care of that one.

[nephele]

Only administrators or so can delete comments, which is why in the past moderator action has sometimes only reverted spam comments to an "empty" message.

edit: also pulkomandy mentioned that those comments land on some mailing list, and that may be a factor of why this would be attractive to spammers.

[pulkomandy]

I think this is better reported on Trac's own bugtracker at ​https://trac.edgewall.org. It sounds like a general feature they could have, and not Haiku specific.

[thebuck]

Raised ​https://trac.edgewall.org/ticket/13780 .

This ticket might be converted to a task then:
Delete spam comments which only have been edited away.