ASCII NUL in desc of $body_zerocount (keyword grepability)

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index de7d2b6bbb2a1b1dc01eae147f7e138f0f8d9319..0641ad1246cc56a1fda0141508163400fde618ae 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -10208,10 +10208,12 @@ See &*match_local_part*&.
 
 .vitem &*match_ip&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*&
 .cindex "&%match_ip%& expansion condition"
+.new
 This condition matches an IP address to a list of IP address patterns. It must
 be followed by two argument strings. The first (after expansion) must be an IP
-address or an empty string. The second (after expansion) is a restricted host
+address or an empty string. The second (not expanded) is a restricted host
 list that can match only an IP address, not a host name. For example:
+.wen
 .code
 ${if match_ip{$sender_host_address}{1.2.3.4:5.6.7.8}{...}{...}}
 .endd
@@ -10257,6 +10259,11 @@ just as easy to use the fact that a lookup is itself a condition, and write:
 .endd
 .endlist ilist
 
+.new
+Note that <&'string2'&> is not itself subject to string expansion, unless
+Exim was built with the EXPAND_LISTMATCH_RHS option.
+.wen
+
 Consult section &<<SECThoslispatip>>& for further details of these patterns.
 
 .vitem &*match_local_part&~{*&<&'string1'&>&*}{*&<&'string2'&>&*}*&
@@ -10656,7 +10663,7 @@ number of lines in the message's body. See also &$message_linecount$&.
 .cindex "binary zero" "in message body"
 .vindex "&$body_zerocount$&"
 When a message is being received or delivered, this variable contains the
-number of binary zero bytes in the message's body.
+number of binary zero bytes (ASCII NULs) in the message's body.
 
 .vitem &$bounce_recipient$&
 .vindex "&$bounce_recipient$&"