A new version of Regex-Core was added to project The Inbox:
http://source.squeak.org/inbox/Regex-Core-ct.61.mcz

==================== Summary ====================

Name: Regex-Core-ct.61
Author: ct
Time: 8 July 2021, 1:30:44.09436 am
UUID: 63655b8f-ad42-0946-b6fe-4dc3100995f1
Ancestors: Regex-Core-ct.59

Adds String >> #escapeRegex to escape special characters in a string before composing it into another regex.

Usage:

	':-)' matchesRegex: ':-)' escapeRegex

=============== Diff against Regex-Core-ct.59 ===============

Item was added:
+ ----- Method: RxParser class>>escapeString: (in category 'utilities') -----
+ escapeString: aString
+ 	"Answer a copy of aString which does not contain any unescaped characters. This is the inverse function of String >> #matchesRegex:.
+ 	NB: Basically, we could simply escape every single character in the string, but this would not produce human-readable outputs."
+ 
+ 	^ aString
+ 		copyWithRegex: ('[{1}]' format: {self specialCharacters collect: [:character | '\', character]})
+ 		matchesTranslatedUsing: [:match | '\', match]!

Item was added:
+ ----- Method: RxParser class>>specialCharacters (in category 'utilities') -----
+ specialCharacters
+ 
+ 	^ #($( $) $[ $] $* $+ $? ${ $} $. $^ $$ $: $\)!

Item was added:
+ ----- Method: String>>escapeRegex (in category '*Regex-Core') -----
+ escapeRegex
+ 
+ 	^ RxParser escapeString: self!