Hi Ken, thank you very much for your suggestions. I updated my post with the perlcommands you suggested. I just noticed something interesting on the linux-machine wenn running perl -d t/Encode.t : 
DB<8> x $uni
0  '\x{03B1}'

DB<9> x is "\N{alpha}",substr($uni,0,1),"alpha does not map to symbol 
+'a'";
Unknown charname 'alpha' at (eval 23)[/usr/share/perl/5.18/perl5db.pl:
+732] line 2, within string

DB<10> x is "\N{greek:alpha}",substr($uni,0,1),"alpha does not map to 
+symbol 'a'";
ok 6 - alpha does not map to symbol 'a'
0  1

[download]
So apparently, \N{alpha} is also wrong on the linux machine, but somehow the testcase does pass as "ok" anyways. Strange.

Unfortunately, changing alpha to greek:alpha didn't help on the AIX machine. AIX doesn't know about greek:alpha either.

I guess for now, that the Unicode-Table of linux and AIX differ. I am trying to find a way to display all availiable aliases of a unicode point. Something like this:
$unicode_module->get_char_aliases('U+03B1');

GREEK SMALL LETTER ALPHA
ALPHA
alpha

[download]
Anyways, I will keep searching. Thanks for all your help so far.

In reply to Re^2: Unknown charnames when building Encode by yulivee07
in thread Unknown charnames when building Encode by yulivee07

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