Re: Understanding filter function calls

[Jens Schmidt <jschmidt4gnu@vodafonemail.de>]

On 2023-07-24  07:46, Karthik Chikmagalur wrote:

> 1. Gather fragments in the buffer
> 
> 2. Create a TeX file containing this LaTeX
> 
> 3. Run latex (TeX -> DVI)
> 
> 4. Run dvisvgm in the LaTeX process sentinel (DVI -> SVG or series
> of SVGs)
> 
> 5. Update in-buffer previews as SVGs are generated through the 
> dvisvgm process' filter function.

Most of the above are unknown to me but I'll risk a guess anyway ...

> 1. If the latex/dvisvgm executables from TeXLive 2022/2023 take about
> the same time, and the stdout (that the filter function sees) is
> identical, why is Emacs' filter function call behavior different?

... seems that TeXLive 2023 creates differently sized chunks of output?
Could you try to buffer these using, for example, "dd", to see whether
that makes a difference?

More concretely, this snippet

   ( while :; do echo 1; sleep 0.5; done ) | dd iflag=fullblock bs=16

spits out 8 lines of output every 4 secs.