[basex-talk] base-uri throws exception

Hi,

importing archives using the GUI containing files with certain characters (e.g. []) leads to exception requesting the base-uri later on. For example importing a archive containing 'files/[Content_Types].xml' file (which is a valid file name) can be imported and results in the mentioned uri which is not valid and will result in an exception using base-uri for nodes contained in the corresponding instance.

Better mask the non allowed chars while importing instead of creating invalid uris.

Alex