[tex-k] Speed of kpsewhich when querying the repertories of the TeX installation
karl at freefriends.org
Thu Apr 30 23:42:03 CEST 2015
I may write a Makefile which will act after querying
the repertories locations. But one tenth of a second
for each kpsewhich call is a lot.
Save the result instead of making the same call thousands of times. I
don't agree that 100 ms is such a horrible time to do all those
filesystem operations. In fact, it seems rather quick to me.
Could it be imagined to have some kpsewhichdir utility
1) I fail to see how making a utility restricted to a single variable
could speed anything up. Surely what takes the time is looking for the
config files in all the possible directories, and (more so) reading the
ls-R file. If you run kpsewhich --debug=-1 --expand-path=\$TEXMFHOME,
you will see what it's doing.
2) Regardless, the idea of a utility dedicated to a single variable
sounds wrong in principle to me and I don't think it should be done.
the environment variable $TEXMFHOME
So far as I can see, if the envvar is set, its value is already (has
always been) returned "instantly". The lookups are only done if they
need to be.
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