Add the regex_stdlib regular expression engine.

Unlike other regular expression engines this is available on all
systems.

2 files changed, 24 insertions, 2 deletions

diff --git a/data/anope.example.conf b/data/anope.example.conf
index 118f2f2f5..62eaa8154 100644
--- a/data/anope.example.conf
+++ b/data/anope.example.conf
@@ -527,7 +527,7 @@ options
 	 *
 	 * Note for this to work the regex module providing the regex engine must be loaded.
 	 */
-	#regexengine = "regex/pcre"
+	#regexengine = "regex/stdlib"
 
 	/*
 	 * A list of languages to load on startup that will be available in /NICKSERV SET LANGUAGE.
diff --git a/data/modules.example.conf b/data/modules.example.conf
index 6630bc750..fdf5b57be 100644
--- a/data/modules.example.conf
+++ b/data/modules.example.conf
@@ -412,11 +412,33 @@ module { name = "help" }
  * m_regex_posix [EXTRA]
  *
  * Provides the regex engine regex/posix, which uses the POSIX compliant regular expressions.
- * This is likely the only regex module you will not need extra libraries for.
  */
 #module { name = "m_regex_posix" }
 
 /*
+ * m_regex_stdlib
+ *
+ * Provides the regex engine regex/stdlib, which uses the regular expression library that is part of
+ * the C++ standard library.
+*/
+module
+{
+	name = "m_regex_stdlib"
+
+	/*
+	 * The syntax scheme to use. Can be set to awk to use the regular expression grammar used by the
+	 * awk utility in POSIX, basic to use the basic POSIX regular expression grammar, ecmascript to
+	 * use the modified ECMAScript regular expression grammar, egrep to use the regular expression
+	 * grammar used by the grep utility with the -E option in POSIX, extended to use the extended
+	 * POSIX regular expression grammar, or grep to use the regular expression grammar used by the
+	 * grep utility in POSIX.
+	 *
+	 * See https://en.cppreference.com/w/cpp/regex/syntax_option_type for more information.
+	 */
+	syntax = "ecmascript"
+}
+
+/*
  * m_regex_tre [EXTRA]
  *
  * Provides the regex engine regex/tre, which uses the TRE regex library.