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Re: Understanding filter function calls

From: Karthik Chikmagalur
Subject: Re: Understanding filter function calls
Date: Fri, 28 Jul 2023 14:51:00 -0700

> Do you mean that
>  -v, --verbosity=level
>            Controls the type of messages printed during a dvisvgm run:
>            0   no message output at all
>            1   error messages only
>            2   warning messages only
>            4   informational messages only
>                Note By adding these values you can combine the
>                categories. The default level is 7, i.e. all messages
>                are printed.
> is not sufficient?

Yes.  The text in the example stdout(s) I included are all generated by
4, "informational messages only".

>> Any ideas on how to avoid this throttling would be appreciated.
> One possibility can be redirecting the strerr to file, waiting for the
> dvisvgm process to finish, and then examining the file.

This would be the same as shifting the Emacs-side processing to the
dvisvgm process sentinel instead of the process filter.  We want to
populate the in-buffer previews as they are generated because this is a
much more responsive experience.  Fragments visible in the window are
previewed first, so the preview run appears close to instantaneous even
if there are thousands of LaTeX fragments in the queue.


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