Apply a declaration block to every ::object-id it selects

[biodranik]

Problem

updateStyles() took the first rule testChains() matched and applied the whole declaration block to that single ::object-id. In a selector group that mixes layers, only the first one was ever styled:

node|z16-[addr:housenumber][addr:street],
node|z16-[addr:housenumber][addr:street]::int_name,
{text: none;}

::default gets text: none, ::int_name keeps text: int_name. The surviving layer then owns the caption drule, so libkomwm looks up a priority for <type>::int_name — which no style defines — and generation dies with ERROR: priority is not set for caption building-address::int_name.

Which selector wins is purely positional: putting ::int_name first suppresses that one and leaves ::default rendered, so reordering the group only moves the hole.

This is what the

/* ToDo text: none; doesn't work here ..  */

comment in the main repo's data/styles/vehicle/include/Basemap_label.mapcss has been working around; adding text: none to that block reproduces the same failure.

Fix

testChainsAll() returns the first matching rule for each distinct ::object-id in the group, and updateStyles() applies the block to each. testChains() is untouched, so get_runtime_conditions() and the existing test call sites are unaffected.

Blast radius

22 of 3268 declaration blocks in the main repo mix object-ids (11 in default/Roads.mapcss ::cycleline, 8 in outdoors/Roads.mapcss, 2 ::bridgeblack/::bridgewhite, 1 the vehicle ToDo). Regenerating everything through generate_drules.sh:

same  drules_default.bin/.txt    same  drules_cycling.bin/.txt
same  drules_outdoors.bin/.txt   same  drules_vehicle.bin/.txt
same  drules_design.bin          same  drules_merged.bin/.txt
same  classificator.txt, types.txt, visibility.txt, colors.txt, patterns.txt
same  styles/ (priority files)

Byte-identical for all four families, light and dark. And the housenumber block above now produces exactly what the ::* workaround does — same drules_cycling.bin, 0 errors.

Testing

python -m unittest discover -s tests passes 57/57. test_update_styles_by_class pinned the old behaviour (its own comment read # This class is ignored by StyleChooser) and now asserts both selected classes are styled.

Note: CI on this branch is red for an unrelated reason — see #40, which restores it.

Unlocked follow-up

The vehicle ToDo can be resolved in the main repo once this is pinned.

Generated with LLM assistance.

[strump]

LGTM.