Username regex with special allowances
136275
Validating user's UTF-8 name in Javascript
25962
Are user names that represent domains allowed?
37492
Custom word boundaries in regular expression
83787
"Failed to create user" due to regular expression error
2360
My regex is matching too much. How do I make it stop?
104414
JavaScript regular expressions and sub-matches
21165
Escaping username characters in basic auth URLs
71580
Change default username from "Unknown" to "User{number}"
127860
A regular expression to exclude a word/string
58191
regex for money values in JavaScript
52544
How can I use a regular expression to validate month input?
52619
Regex for HTML attribute replacement/addition
72668
Dealing with "difficult" usernames in targeted comments
110391
Password validation (regex?)
103986
restrict 1 word as case sensitive and other as case insensitive in python regex | (pipe)
141606
How can I recognize an evil regex?
23683
Flagging mechanism for offensive usernames