Weird unasked-for file trace in LaTeX

David Carlisle d.p.carlisle at
Mon Dec 9 02:43:14 CET 2019

The map file line is shown on the terminal by default, even without
your tracing lines the output is

$ pdflatex cc393
This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019)
(preloaded format=pdflatex)
 restricted \write18 enabled.
entering extended mode
LaTeX2e <2019-10-01> patch level 3
Document Class: article 2019/10/25 v1.4k Standard LaTeX document class
No file cc393.aux.
(./cc393.aux) )</usr/local/texlive/2019/texmf-dist/fonts/type1/public/amsfonts/
Output written on cc393.pdf (1 page, 12027 bytes).
Transcript written on cc393.log.

You see the same with the plain TeX

Hello, world!


It comes between the [ (the start of the output routine) and 1] (page
1 being shipped out) as that i the first time it needs to access the
map file.

You can force it to be loaded earlier, before the [ is output by adding


to the top of the file.


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