Line numbers and other information in XML parsing

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What is the best method of figuring out data like line or column numbers
while parsing XML?

I use the XM_EIFFEL_PARSER with an implementation of XM_CALLBACKS. The
provided features (callbacks) do not allow to query the current parse
position in the file. I solve the problem by passing the
XM_EIFFEL_PARSER instance to the implementation of XM_CALLBACKS.

Is there a better way of doing this?

- --
Sandro
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