On Thu, Jan 12, 2012 at 8:11 PM, Kip Warner <kip@thevertigo.com> wrote:

> On Thu, 2012-01-12 at 11:13 +0100, Hans Hagen wrote:
> > such a message comes from stored macros so there is no such
> > information
>
> So when you have a book of hundreds of pages in length split up over
> dozens of tex files and ConTeXt emits an error, how do you know what
> file / line number to examine?
>
Usually the strategy is to isolate the culprit by including progressively
lengthy  chunks of tex
from the begin to end
and then narrowing the selection until you find a macro or paragraph.
Then surround it with
\tracingall
...
\trancingnone
and you have a *huge* amount of informations.

(btw, discover where an error happens  it's  known to be problematic due
the inherently asynchronous nature of TeX
and the   macro programming language, where expansion can be  very hard to
understand)
-- 
luigi