How to set environment variable XAPIAN_CJK_NGRAM?

[Eric Lindblad]

>> The last Debian version I installed on a Desktop was 5.0.0 (released 14-02-09).

Haven't used a Debian version since 2011.

> That's actually version 5.3 of the base-files package, rather than
> version 5.3 of Debian (there isn't a version 5.3 of Debian).

Yes, that's correct.

Debian 7 being released after that distro's developers conceded to the integration of /etc/profile.d.