[tex-live] fc-cache documentation ?

Philip Taylor P.Taylor at Rhul.Ac.Uk
Sat Aug 27 13:56:39 CEST 2016

Werner LEMBERG wrote:

>> how is the "normal" user to learn (a) of its existence, and (b) of its potential importance.
> The question is fully legitimate. It's the usual discrepance between developers and users. People who start with coding often change to a unix-like platform because command line tools like TeX are natural there. However, Joe User stays on Windows and needs different, much enlarged documentation because the basics are so different. In particular, FontConfig (which fc-cache is part of) runs on virtually all GNU/Linux or BSD boxes *automatically* because it is the de-facto font managing standard on unix-like boxes.
Thank you for acknowledging the validity of the question, Werner.  But I am still puzzled as to know how how Knuth's "B L User" is intended to (a) learn of the existence of fc-cache (and presumably, some of the other fc-tools), (b) understand their potential importance in terms of the run-time for XeTeX and friends, and (c) learn how/when to invoke fc-cache.  Having posted my question earlier, I then thought that perhaps the reason that TeXdoc has no entry for "fc-cache" is because one is not intended to invoke it directly, but rather through (e.g.,) "tlmgr"   However, I then ran "TeXdoc tlmgr" and found no mention of fc-cache therein.  So, is there any part of TeX Live that interacts with fc-cache (or with any other element of fontconfig), or is the latter a completely separate subsystem on which TeX Live depends but does not invoke directly nor document in any way ?  TeXdoc fontconfig also returns "Topic unknown".

Philip Taylor
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