Config::IniFiles, as many other modules, is meant as a versatile instrument and therefore allows spaces, commas, etc. as part of the configuration values. So you seem to be out of luck.

Discipulus' hint is the best you can get, except he didn't quote the last sentence of that section:
A multi-line/value field that is returned in a scalar context will be joined using $/ (input record separator, default is \n) if defined, otherwise the values will be joined using \n.
So you'd have to decide beforehand which separator to use - EITHER space OR comma OR dot (OR whatever) - and go for something like 
my @arr;
{
    local $/ = ' ';
    @arr=$cfg->val('hello','j');
}

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$/ is a Perl builtin, see perlvar (search for $RS), so it's not a "third party method".
Sorry, that was wrong, describing the module's behaviour for returning a multivalue as a scalar. But what's wrong with Corion's suggestion? split is also a Perl builtin, not "third party".

OR make the multiline field in the ini file conform to the format specified in the "FILE FORMAT" section of the module's documentation…

In reply to Re^3: Using Config::IniFiles Module Obtain Comma Separated Values into An Array by soonix
in thread Using Config::IniFiles Module Obtain Comma Separated Values into An Array by perlPsycho

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