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sharper boundaries for @ mentions (fixes #2195)

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This commit is contained in:
Niklas Fiekas 2016-09-23 19:55:09 +02:00
parent 198e548089
commit 7709eb72be
1 changed files with 5 additions and 6 deletions
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11
modules/user/src/main/User.scala
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@ -123,12 +123,11 @@ object User {
import lila.db.BSON.BSONJodaDateTimeHandler
implicit def playTimeHandler = reactivemongo.bson.Macros.handler[PlayTime]
// Matches a lichess username with a '@' prefix only if the next char isn't a digit,
// if it isn't after a word character (that'd be an email) and fits constraints in
// https://github.com/ornicar/lila/blob/master/modules/security/src/main/DataForm.scala#L34-L44
// Example: everyone says @ornicar is a pretty cool guy
// False example: Write to contact@lichess.org, @1
val atUsernameRegex = """\B@(?>([a-zA-Z_-][\w-]{1,19}))(?U)(?![\w-])""".r
// Matches a lichess username with an '@' prefix if it is used as a single
// word (i.e. preceded and followed by space or appropriate punctuation):
// Yes: everyone says @ornicar is a pretty cool guy
// No: contact@lichess.org, @1, http://example.com/@happy0
val atUsernameRegex = """(?<=\s|^)@(?>([a-zA-Z_-][\w-]{1,19}))(?![\w-])""".r
val usernameRegex = """^[\w-]+$""".r
def couldBeUsername(str: String) = usernameRegex.pattern.matcher(str).matches