Viewing abuse filter 4: Large deletion from article by new editors

Filter parameters

Filter ID:

4

Description:

(publicly viewable)

Statistics:

Of the last 26 actions, this filter has matched 0 (0%). On average, its run time is 0.05 ms, and it consumes 1.2 conditions of the condition limit.

Conditions:

edit_delta < -5000 &
new_size >= 50 &
page_namespace == 0 &
length(summary) < 60 &
!(user_name in page_recent_contributors) & 
!("#redirect" in lcase(added_lines)) &
!(summary irlike "\bcop(y|ied)|und(id|o)|\brv[vt]?\b|revert|vandal|remov|clean|delet|\brmv?\b|\brepea?t") &
rcount("\n[|!<]",removed_lines) / (rcount("\n",removed_lines) + 1) < 0.9 &
length(rmwhitespace(added_lines)) < 3000

Notes:

Adopted from Wikipedia's filter 30
https://en.wikipedia.org/wiki/Special:AbuseFilter/30

Flags:

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Filter last modified:

21:46, 1 July 2026 by Kkuo (talk | contribs)

History:

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{"data":{"rules":"edit_delta \u003C -5000 \u0026\r\nnew_size \u003E= 50 \u0026\r\npage_namespace == 0 \u0026\r\nlength(summary) \u003C 60 \u0026\r\n!(user_name in page_recent_contributors) \u0026 \r\n!(\"#redirect\" in lcase(added_lines)) \u0026\r\n!(summary irlike \"\\bcop(y|ied)|und(id|o)|\\brv[vt]?\\b|revert|vandal|remov|clean|delet|\\brmv?\\b|\\brepea?t\") \u0026\r\nrcount(\"\\n[|!\u003C]\",removed_lines) / (rcount(\"\\n\",removed_lines) + 1) \u003C 0.9 \u0026\r\nlength(rmwhitespace(added_lines)) \u003C 3000","name":"Large deletion from article by new editors","comments":"Adopted from Wikipedia's filter 30\r\nhttps://en.wikipedia.org/wiki/Special:AbuseFilter/30","group":"default","actions":{"tag":["blanking"],"warn":["abusefilter-warning-removal"]},"enabled":true,"deleted":false,"privacylevel":0,"global":false},"actions":{"tag":["blanking"],"warn":["abusefilter-warning-removal"]}}

Actions to take when matched

Trigger actions only if the user trips a rate limit

Number of actions to allow:

Period of time (in seconds):

Group throttle by:

user

See the documentation on mediawiki.org.

Trigger these actions after giving the user a warning

System message to use for warning:

Page name of other message:

(without "MediaWiki:" prefix)

Prevent the user from performing the action in question

System message to use for disallowing:

Page name of other message:

(without "MediaWiki:" prefix)

Revoke the user's autoconfirmed status

Block the user and/or IP address from editing

Block the user and/or IP address from editing their own talk page

Block duration for non-registered users:

Block duration for registered users:

Tag the edit for further review

Tags to apply:

blanking

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