-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.109 2006/09/19 11:28:44 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.110 2006/09/19 14:31:06 ph10 Exp $
New Features in Exim
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1. ACL variables can now be given arbitrary names, as long as they start with
- "acl_c" or "acl_m" (for connection variables and message variables) and are
- at least 6 characters long. However, only alphanumeric characters and
- underscores are allowed. This is a compatible change because the old set of
+ "acl_c" or "acl_m" (for connection variables and message variables), are
+ at least six characters long, with the sixth character being either a digit
+ or an underscore. The rest of the name can contain alphanumeric characters
+ and underscores. This is a compatible change because the old set of
variables such as acl_m12 are a subset of the allowed names. There may now
be any number of ACL variables. For example:
- set acl_c_foo = something
- set acl_ccc = thingsome
- set acl_m13 = value for original ACL variable
- set acl_m13b = whatever
+ set acl_c13 = value for original ACL variable
+ set acl_c13b = whatever
+ set acl_m_foo = something
- What happens if an undefined ACL variable is referenced depends on the
- setting of the strict_acl_vars option. If it is false (the default), an
- empty string is substituted; if it is true, an error is generated. This
- affects all ACL variables, including the "old" ones such as acl_c4.
- (Previously there wasn't the concept of an undefined ACL variable.)
+ What happens if a syntactically valid but undefined ACL variable is
+ referenced depends on the setting of the strict_acl_vars option. If it is
+ false (the default), an empty string is substituted; if it is true, an error
+ is generated. This affects all ACL variables, including the "old" ones such
+ as acl_c4. (Previously there wasn't the concept of an undefined ACL
+ variable.)
The implementation has been done in such a way that spool files containing
ACL variable settings written by previous releases of Exim are compatible