problems with local user format files

Zdenek Wagner zdenek.wagner at
Thu Oct 15 15:25:46 CEST 2020

Hi all,

I am not sure but I think that it happens if a format is requested but
does not exist in the global TEXMF-VAR tree. In such a case it is
automatically generated in the user's tree and does not get updated.
If the maintainer creates all formats during installation and they are
updated after each "tlmgr update", it should not happen (unless a user
generates a format explicitly).

Zdeněk Wagner

čt 15. 10. 2020 v 14:59 odesílatel Ulrike Fischer <news3 at> napsal:
> texlive creates sometimes (I don't know which events triggers this,
> but it happened also for me more than once) local user format files
> in .texlive2020/texmf-var/web2c
> This format files are normally unwanted as they shadow the formats
> from tlmgr update and I'm seeing an increasing amount of questions
> triggered by such user formats, e.g.
>, and of mysterious and
> time consuming compilation failures on my own computer (at least the
> first few times it happened it was quite time consuming to debug).
> I'm alone on my computer. I never run fmtutil-user manually and I
> never want formats in .texlive2020/texmf-var/web2c. Is there a way
> to avoid to get them? If some events triggers this format creation I
> would greatly prefer to get an error about a faulty or missing
> format.
> --
> Ulrike Fischer

More information about the tex-live mailing list.