#+TITLE: Development notes/ideas

* Bookmarks

Currently the bookmark page replaces the current page, and it
does so silently (i.e. it doesn't become part of the link hierarchy).
I think this is a mistake, as it results in confusing behaviour when
traversing the link hierarchy after visiting one of the bookmarked links.

Instead, I think I should
1. Make the bookmark page part of the hierarchy, and
2. Reinstate the visited node hash table to avoid excess link hierarchy pollution.

In order to accomplish 1. it will be necessary to make the bookmark page renderer
a proper getter function, and one that never caches the contents of the buffer.

Actually, I might have to think about that a bit more.  I don't know
how to answer the question of what the best thing to do with node
parent links when using a cached node in place of a new node.  (Maybe
I always update node.parent unless parent is already an ancestor of
node?)

* Selectors

** TODO Implement support for telnet entries
Similar to http entries, telnet entries will be handled by code
external to elpher. However it seems I made http entry handling a
special case, and I don't want another!  So the only option is to
bring both http and telnet entries back into the fold by representing
them both as standard nodes and having the grunt work done by getter
functions.