Docs: tidying

[exim.git] / doc / doc-docbook / filter.xfpt

diff --git a/doc/doc-docbook/filter.xfpt b/doc/doc-docbook/filter.xfpt
index 8bbe3511725f9ea4af7c34f02dfc5e927f932fd0..87c2682038a4f291152ccdf5fc73dfefb420c106 100644 (file)
--- a/doc/doc-docbook/filter.xfpt
+++ b/doc/doc-docbook/filter.xfpt
@@ -48,7 +48,7 @@
 . Copyright year.  Update this (only) when changing content.
 
 .macro copyyear
-2018
+2023
 .endmacro
 
 . ===========================================================================
@@ -285,9 +285,9 @@ in RFC 3028, which should be read in conjunction with these notes.
 The Exim Sieve implementation offers the core as defined by RFC 3028,
 comparison tests, the subaddress parameter, the &*copy*&, &*envelope*&,
 &*fileinto*&, &*notify*&, and &*vacation*& extensions, but not the &*reject*&
-extension. Exim does not support message delivery notifications (MDNs), so
-adding it just to the Sieve filter (as required for &*reject*&) makes little
-sense.
+extension.
+Exim did not support message delivery notifications (MDNs) when Sieve handling
+was introduced, so &*reject*& (which need them) could not be supported.
 
 In order for Sieve to work properly in Exim, the system administrator needs to
 make some adjustments to the Exim configuration. These are described in the
@@ -355,10 +355,14 @@ contains an additional address besides the one the test checks for.
 
 
 .section "Semantics of keep" "SEC11"
-The &(keep)& command is equivalent to
+.new
+The &(keep)& command is by default equivalent to
 .code
 fileinto "inbox";
 .endd
+but, when called from a redirect router, the destination can be set
+by using the &%sieve_inbox%& option on the router.
+.wen
 It saves the message and resets the implicit keep flag. It does not set the
 implicit keep flag; there is no command to set it once it has been reset.
 
@@ -1343,7 +1347,7 @@ A &"contains"& test does a partial string match, having expanded both strings.
 .endd
 
 For a &"matches"& test, after expansion of both strings, the second one is
-interpreted as a regular expression. Exim uses the PCRE regular expression
+interpreted as a regular expression. Exim uses the PCRE2 regular expression
 library, which provides regular expressions that are compatible with Perl.
 
 The match succeeds if the regular expression matches any part of the first