Don't treat *_(cosplay) tags as being invisibly aliased when a character tag is aliased. For example,
if toosaka_rin is aliased to tohsaka_rin, and toosaka_rin_(cosplay) is later added to a post, don't
magically translate the tag to tohsaka_rin_(cosplay). Instead, treat it as an error to create a
*_(cosplay) tag for an aliased character tag.
This removes some of the complexity and magic behavior surrounding *_(cosplay) tags.
This directory contains library code used through Danbooru. This includes things like defining API clients, dealing with
sources, parsing tag searches, storing and resizing images, and so on.
Many of the files here use the Service Object pattern. Instead of putting complex code in models or controllers, it goes
here, in plain old Ruby objects (POROs). This keeps models and controllers simpler, and keeps domain logic isolated and
independent from the database and the HTTP request cycle.
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