The map sheets are generated once, in English, so in an Arabic or
Chinese packet page 1's map labelled every country in Latin capitals,
and its privacy line was English.
The labels are now replaced as the sheet is lifted into the packet.
They are recognised by the generator's own rule rather than a list:
generate.mjs draws each label as esc(ISO3_NAME[iso3].toUpperCase())
from the zone data's ISO3_NAME table, so inverting that table under
that transform names the country behind every label it can draw. The
inverse is unambiguous (162 labels, no two countries sharing one), so a
label is known exactly or left as drawn. The map's privacy line is word
for word the packet's privacy_note, so it takes this language's.
A width guard: the generator placed every label and then dropped any
that would collide, measuring the English name, so a translation is
fitted into that same box - estimated wider, it shrinks in proportion
and cannot reach a neighbour the English name did not. On the Sudan
poster, six Arabic names shrink (the longest, Saudi Arabia, from 15px
to 10px); none of the narrower Chinese ones do. Capitals' tracking is
dropped for scripts without capitals, where it breaks Arabic joining.
English is untouched: its relabeller is null, and the lifted sheet is
byte-identical with and without it. No sheet or poster is regenerated -
the change is in the lift, so the tracked 3x4 posters page 1 now uses
are relabelled as they are.
Both print paths supply the relabeller: the UPG 100 profile from its
own ISO3_NAME and the library's country-name resolver, the offline
generator from the same table and the injected ISO-3 to ISO-2 table.
check-map-labels (gates:pre), on the tracked Sudan poster: English
byte-identical; in ar and zh no known English name left, halo matching
fill, privacy localized; the guard fires for Arabic, not Chinese, and
grows nothing; Arabic tracking off, Spanish kept; an unknown label left
alone. Mutation-tested five ways, each caught.
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