Re: GObject error handling questions

2. Is it possible to attach additional information to GError (file where
the error came from, line and column)? If not, what is the standard way
to report these?
No, GError::message is designed to be displayed on screen, error
targeted to developers shall be displayed in the terminal (probably
using g_error, or assertions). The domain and code shall be used
whenever run-time handling of the error shall be made. 

I'm implementing a parser and want it to report line and column of parse
errors (not where the g_set_error was in the .c file) and already know
that GError is not extensible.

What is the standard way of reporting additional error information in

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