-Language display order
-----------------------
-
-Jonas pointed out that one might want to control the order that links to
-other languages are listed, for various reasons. Currently, there is no
-order, as `po_slave_languages` is a hash. It would need to be converted
-to an array to support this. (If twere done, twere best done quickly.)
---[[Joey]]
-
-> Done in my po branch, preserving backward compatibility. Please
-> review :) --[[intrigeri]]
-
->> Right, well my immediate concern is that using an array to hold
->> hash-like pairs is not very clear to the user. It will be displayed
->> in a confusing way by websetup; dumping a setup file will probably
->> also cause it to be formatted in a confusing way. And the code
->> seems to assume that the array length is even, and probably blows
->> up if it is not.. and the value is marked safe so websetup can be
->> used to modify it and break that way too. --[[Joey]]
-
->>> I have added a sanity check for the even array problem. This was
->>> the easy part.
->>>
->>> About the hash-like vs. dump and websetup issue,
->>> I can think of a few solutions:
->>>
->>> - keep the current hash-like pairs and unmark this setting as safe
->>> for websetup: this does not solve the dump setup issue, though;
->>> - replace the array of pairs with an array of
->>> "LANGUAGECODE|LANGUAGENAME" elements, using a pipe or whatever
->>> separator seems adequate;
->>> - add support for ordered hashes to `$config`, websetup and
->>> dumpsetup, using Tie-IxHash or any similar module;
->>> - replace the array of hash-like pairs with an array of real
->>> pairs, such as `[ ['de', 'Deutsch'], ['fr', 'Français'] ]`; this
->>> brings once again the need for `$config` to support arrays of
->>> arrays, which I have already implemented in my mirrorlist branch
->>> (see [[todo/mirrorlist_with_per-mirror_usedirs_settings]] for
->>> details).
->>>
->>> Joey, which of these solutions do you prefer? Or another one?
->>> I tend to prefer the last one. --[[intrigeri]]
-
->>>> I prefer the pipe separator, I think. I'm concerned that there is
->>>> no way to really sanely represent complex data structures in web
->>>> setup. --[[Joey]]
-
->>>>> Implemented using the pipe separator, fixed the po.t test suite
->>>>> accordingly. Please have a look. --[[intrigeri]]
-
->>>>>> Merged. I wonder if "ll: Lang" would be better than pipe?
-
->>>>>>> I've no clear opinion on this one. --[[intrigeri]]
-
->>>>>> Also, the compatability code for HASH is not really needed,
->>>>>> ikiwiki has not been released using a hash for it. --[[Joey]]
-
->>>>>>> The compatibility code is there to support the
->>>>>>> `po_slave_languages => {fr => 'Français'}` format that has
->>>>>>> been supported for ages. It's not there to support the
->>>>>>> intermediate array of hash-like pairs I proposed in the
->>>>>>> meantime.
->>>>>>>
->>>>>>> By the way, could you please have a look to the rest of my po
->>>>>>> branch? (bb22e8c4a..d98296d1db0) --[[intrigeri]]
-
->>>>>>>> Thought I'd already merged everything; I've got those in now.
->>>>>>>> --[[Joey]]
-