ruffneck realized:
i have forgot how long can filename be in amigaOS... can anybody refresh my mind:)
;-) It depends on which version of Workbench you're using. WB3.1 and under use only 30 or 32 characters, but WB 3.5 and 3.9 permit a little over 100 characters.
To determine the exact number, try creating a drawer with the file name 12345678901234567890123... (and so on.) The OS will chop the excess character off the end.