On 2016.11.15 11.44, Wietse Venema wrote:
> btb:
>> since parameters can be user defined, i think it would be good if
>> the documentation stated this, maybe in postconf(5)? it would
>> alleviate guessing games.
>>
>> possibly something like:
>>
>> Postfix main.cf file format [...] ? A logical line starts with
>> non-whitespace text. A line that starts with whitespace continues a
>> logical line.
>>
>> ? Parameter names are limited to the character set [a-zA-z0-9_].
>
> This is inaccurate. The above parameter name syntax limitation exists
> only with $name or ${name....}, i.e. when a parameter value is used
> in another parameter setting. A name can contain any non-space
> character with 'name = value' or with master.cf service names.
i see, thanks for clarifying this
> Would spelling out such intricate rules make Postfix easier to use?
i can't speak for everyone, of course, but it might, if it could be done
concisely. when postfix tells me there was a syntax error, i've become
accustomed to finding valid syntax defined in the documentation.
would this be acceptable?:
The expressions "$name" and "${name}" are recursively replaced with the
value of the named parameter, except where noted. An undefined parameter
value is replaced with the empty value. Named parameters are limited to
the character set [a-zA-Z0-9_].
-ben
