Where does Magento 2 Generate Image URLs

Question

I recently switched a Magento 2 system from serving public files out of

/path/to/magento

to serving files out of

/path/to/magento/pub

i.e. I wanted Apache to use the index.php file in the pub folder. However, Magento is still generating image and asset URLs with pub in the URL

http://magento.example.com/pub/static/frontend/Magento/luma/en_US/mage/calendar.css

instead of

http://magento.example.com/static/frontend/Magento/luma/en_US/mage/calendar.css

This is happening for images, javascript, and css file.

The obvious question: Why is this happening, how can I fix it.

The less obvious question: Where does the PHP logic reside for adding pub to asset URL so I can debug this myself.

Cache had been cleared with a

rm -rf var/generation/*
rm -rf var/cache/*

Answer 1

Turns out the caches weren't entirely cleared. The system was running with the default full page caching enabled, and I had failed to clear the var/page_cache folder.