Remember collapsed sections in index.html / haddock-util.js

[liyang]

This is an itch that's been scratching me for a while now. I open up the index.html for base and other packages in the Firefox sidebar for easy access, but every time I switch between packages, it forgets which sections I've collapsed. This is particularly problematic with base, which has quite a few large hierarchies that I don't really use, e.g. Distribution.*.

This patch to haddock-util.js remembers which sections have been collapsed in a cookie, and restores them on the next load. It works correctly even when the docs for multiple packages are hosted at the same domain. (Doesn't set path=/ for the cookie.) Every section is expanded by default when viewed for the first time, in line with existing behaviour.

Cheers, /Liyang

[waern]

Patch applied. Thanks!

[anonymous]

Milestone 2.10.0 deleted