**Original task**
I have had many times where I would continuously go through a history to find out who added an offending line, or a curious line which I need to contact them about. As various people mentioned here (Such as --TK) did not sign, it would take a while to figure out exactly who TK was. It would be rather nice to be able to highlight/search a line, and it would tell me times that that line was affected, which would allow me to easily find who added said line.
This is a feature request, and as so, I labeled it an enhancement, as there's no easy way to request features. Apologies if I did this wrong. I also searched "Line" and only found a very few bugs, none of which like this.
**Merged duplicate task**
Sometimes vandals insert a piece non-sensical information in the middle of a big article which stays covert for years. This is specially true in the Portuguese Wikipedia, which doesn't have enough task force for a immediate vandalism response. It would be great if there was a tool to "blame" a paragraph, like there is in GitHub. I mean, a tool that, given a paragraph (or a set of paragraphs), points out the last edition (or, perhaps, all the editions) in which this paragraph showed up in the differential. Sometimes it wouldn't work due to merges and displacements, but probably would for the 99%.
--Usien6 (talk) 03:06, 11 November 2015 (UTC)
This card tracks a proposal from the 2015 Community Wishlist Survey: https://meta.wikimedia.org/wiki/2015_Community_Wishlist_Survey
This proposal received 15 support votes, and was ranked #53 out of 107 proposals. https://meta.wikimedia.org/wiki/2015_Community_Wishlist_Survey/Moderation_and_admin_tools#Paragraph_blaming_tool
**External tools that did/do this**
* http://wikitrust.soe.ucsc.edu (defunct, see [[https://de.wikipedia.org/wiki/Benutzer:Atlasowa/edit_history_visualization#WikiTrust_.2F_WikiPraise|details and screenshot here]])
* http://wikipedia.ramselehof.de/wikiblame.php
**Further discussion**
* https://lists.wikimedia.org/pipermail/wiki-research-l/2015-August/004703.html (thread)
**Other duplicates:**
* {T3652}
* {T3827}
* {T6796}
* {T9366}
* {T11455}
* {T12031}
* {T15927}
* {T20810}
* {T20218}
**See also:**
* {T12643}
----
Proposed in #community-wishlist-survey-2016. Received 33 support votes, and ranked #46 out of 265 proposals. [[ https://meta.wikimedia.org/wiki/2016_Community_Wishlist_Survey/Categories/Editing#CW2016-R046 | View full proposal with discussion and votes here ]].