When compiled with USE=preview-latex the preview package is not activated in site-gentoo.el this patch corrects this behaviour by adding an condition in the ebuild and a file which contains (require 'tex-site) (load "preview-latex.el" nil t t) first line activates AUCTeX, second preview-latex
Created attachment 76386 [details, diff] addpreview.patch Adds a condition for USE=preview-latex
Created attachment 76387 [details] 60auctex-gentoo.el Activates preview-latex in Emacs
Created attachment 76392 [details, diff] addpreview.patch Reworked the patch a bit to meet the corrected 60auctex-gentoo.el that will follow
Created attachment 76395 [details] 60auctex-gentoo.el Only adds preview-latex, so AUCTeX activation itself is exclusively covered in 50auctex-gentoo.el extended the comment
Will be in stable when 11.82 hits stable: see bug #118100