Changelog

0.2.0 (unreleased)

Same word lists and matching rules as the JavaScript package 0.2.0.

Many more English words, including slurs (fag, faggot, nigger…) and compounds (shitface, dipshit, jackass…), and more Romanized and Devanagari Nepali words (jhant, lauda, chhinal, gadha, ullu…).
New English words at the strict level that are also ordinary words: damn, cum, prick, hoe and others.
shit is now a stem, so shitface and shitting are caught. Names that start with it, like Shitij and Shital, are on the allow list.
A built-in allow list of names and ordinary words, like Randip, Shitij, conditions and Scunthorpe, that are never flagged. The strict level no longer flags them.
A few roots, like fuck and bitch, are caught inside a longer word: dumbfuck, sonofabitch.
x is read as chh in Romanized Nepali, so xakka matches chhakka. chhod ("leave") and chhodnu are no longer flagged by the stem chod.
Words split by punctuation without a space are read joined: sh.it, fu-ck.
Accents and Cyrillic or Greek look-alike letters are removed or replaced: fück, fuсk. 8 reads as b, 9 as g and € as e.
ExtraWords option to flag more words, and AllowWords option to never flag a word.

First release, with the same word lists and matching rules as the JavaScript package 0.1.0.

ContainsProfanity, FindProfanity and Tokenize.
Censor to mask matches in place, with a custom Mask or a Replace function.
Check to scan once, then inspect and censor the result: Check(text).Censor().
FindProfanityMatches to get each match with its byte offsets in the original text.
NewFilter and MustNewFilter for other options, safe for concurrent use.
Languages option to check English, Romanized Nepali and Devanagari separately.
Strictness option with three levels: Lenient, Standard (default) and Strict.
Handles leetspeak, ! and * in place of letters, stretched letters and spelled-out letters.
Handles Nepali postpositions and plurals in both scripts.
Multi-word phrases in both scripts.
The word lists, exported with every entry tagged by language and strictness.
Go 1.22 or later; depends only on golang.org/x/text.