$rfc2822:obs-char
[\u0000-\u0009\u000B-\u000C\u000E-~]
[\x00-\x09\x0B-\x0C\x0E-~]
Test a string: Show
Compare with: Show
Complemetary
[Notes] [RFC2822]
The set definition is contained in sets.json data file.
sets.json