Regex¶
Regular expressions (or short regexes) are often used to check if a text matches a certain pattern. For example the regex ab?c
would match abc
or ac
, but not abbc
or 123
. In Chatterino, you can use them to highlight messages (and more) based on complex conditions.
You can try out your regex patterns on a website like regex101, using the PCRE2
flavor.
Basic patterns:
Pattern | Matches |
---|---|
x? |
nothing or x |
x* |
x , repeated any number of times |
x+ |
x , repeated any number of times but at least 1 |
^ |
The start of the text |
$ |
The end of the text |
x|y |
x or y |
You can group multiple statements with ()
:
Pattern | Matches |
---|---|
asd? |
asd or as |
(asd)? |
asd or nothing |
\(asd\) |
(asd) , literally |
You can also group multiple characters with []
:
Pattern | Matches |
---|---|
[xyz] |
x , y or z |
[1-5a-f] |
1 ,2 ,3 ,4 ,5 ,a ,b ,c ,d ,e ,f |
[^abc] |
Anything, except a , b and c |
[\-] |
- , literally (escaped with \ ) |
\[xyz\] |
[xyz] , literally |
Special patterns:
Pattern | Matches |
---|---|
\d |
Digit characters (0-9) |
\D |
Non-digit characters |
\w |
Word characters (a-zA-Z0-9_) |
\W |
Non-word characters |
\s |
Spaces, tabs, etc. |
\S |
Not spaces, tabs, etc. |
\b |
Word boundaries (between \w and \W) |
\B |
Non-word boundaries |