pmg-bibliography.adoc: add Mastering Regular Expressions

[pmg-docs.git] / pmg-mail-filter.adoc

diff --git a/pmg-mail-filter.adoc b/pmg-mail-filter.adoc
index a02c5bf892da70c5ddf1512aa24d106bd30214e1..15c1022a8157bc97ee165afb08cf21ecf9a130c7 100644 (file)
--- a/pmg-mail-filter.adoc
+++ b/pmg-mail-filter.adoc
@@ -277,3 +277,5 @@ the period. This is used to match an arbitrary string of any length,
 including the null string. For example: `.*company.*` matches
 "company@domain.com" or "company@domain.co.uk" or
 "department.company@domain.com".
+
+The book xref:Friedl97[] provides a more comprehensive introduction.
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