Docs: notes on ETRN

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

diff --git a/doc/doc-docbook/filter.xfpt b/doc/doc-docbook/filter.xfpt
index 40663564b42a52687b7edc39c1d80e81224f8f38..77b295ce9b2b4e12d61e42faa3353f6d5b1ad2e7 100644 (file)
--- a/doc/doc-docbook/filter.xfpt
+++ b/doc/doc-docbook/filter.xfpt
@@ -1,5 +1,3 @@
-. $Cambridge: exim/doc/doc-docbook/filter.xfpt,v 1.11 2010/05/29 19:26:31 nm4 Exp $
-
 . /////////////////////////////////////////////////////////////////////////////
 . This is the primary source of the document that describes Exim's filtering
 . facilities. It is an xfpt document that is converted into DocBook XML for
@@ -10,6 +8,7 @@
 
 .include stdflags
 .include stdmacs
+.include ./local_params
 .docbook
 
 . /////////////////////////////////////////////////////////////////////////////
@@ -23,7 +22,7 @@
 <?sdop
   foot_right_recto="&chaptertitle;"
   foot_right_verso="&chaptertitle;"
-  table_warn_soft_overflow="no"
+  table_warn_overflow="overprint"
   toc_chapter_blanks="yes,yes"
   toc_title="Exim's interfaces to mail filtering"
 ?>
@@ -46,6 +45,13 @@
 .endmacro
 . ===========================================================================
 
+. Copyright year.  Update this (only) when changing content.
+
+.macro copyyear
+2023
+.endmacro
+
+. ===========================================================================
 
 . /////////////////////////////////////////////////////////////////////////////
 . /////////////////////////////////////////////////////////////////////////////
@@ -61,15 +67,18 @@
 <bookinfo>
 <title>Exim's interfaces to mail filtering</title>
 <titleabbrev>Exim filtering</titleabbrev>
-<date>23 November 2009</date>
+<date>
+.fulldate
+</date>
 <author><firstname>Philip</firstname><surname>Hazel</surname></author>
 <authorinitials>PH</authorinitials>
 <revhistory><revision>
-  <revnumber>4.73</revnumber>
-  <date>19 Nov 2010</date>
+.versiondatexml
   <authorinitials>PH</authorinitials>
 </revision></revhistory>
-<copyright><year>2010</year><holder>University of Cambridge</holder></copyright>
+<copyright><year>
+.copyyear
+           </year><holder>The Exim Maintainers</holder></copyright>
 </bookinfo>
 .literal off
 
@@ -79,8 +88,8 @@
 
 .chapter "Forwarding and filtering in Exim" "CHAPforandfilt"
 This document describes the user interfaces to Exim's in-built mail filtering
-facilities, and is copyright &copy; University of Cambridge 2007. It
-corresponds to Exim version 4.73.
+facilities, and is copyright &copy; The Exim Maintainers &copyyear(). It
+corresponds to Exim version &version().
 
 
 
@@ -276,9 +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
@@ -1180,7 +1189,9 @@ been obeyed, the &(logwrite)& command can be used to write to it:
 &`e.g. logwrite "$tod_log $message_id processed"`&
 .endd
 It is possible to have more than one &(logfile)& command, to specify writing to
-different log files in different circumstances. Writing takes place at the end
+different log files in different circumstances.
+A previously opened log is closed on a subsequent &(logfile)& command.
+Writing takes place at the end
 of the file, and a newline character is added to the end of each string if
 there isn't one already there. Newlines can be put in the middle of the string
 by using the &"\n"& escape sequence. Lines from simultaneous deliveries may get
@@ -1332,7 +1343,7 @@ 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