Preliminary support, anyway.
If a dependency only includes DEPEND_EXISTS, then only changes that
involved adding or deleting a page can trigger it.
This is complicated by internal pages, since the code did not previously
differentiate between add, delete, and change of internal pages.
Now it tracks change separately from add+delete, so DEPEND_EXISTS pagespecs
that actually match internal pages (which will probably be quite rare in
practice) should work.
As soon as a change happens, we know we will need to rescan all
dependencies from the start, so bail out of the current scan partway to
avoid doing redundant work.
Only problem with this is that ikiwiki sometimes ends up printing out
dependencies that, while correct, are not obvious. Before:
building B, which depends on A
building C, which depends on A
building D, which depends on A
After:
building B, which depends on A
building C, which depends on B
building D, which depends on C
I had assumed that an image shown full size did not need add_depends, since
a change would not need a change to the displaying page.
But this is not true if the image is modified and its size changes. Then
the page needs to update its img tag to reflect the current size.
If an image was resized smaller, with width and height specified to values
that did not fit its aspect ratio, the image tag with/height were not
adjusted to the actual size imagemagick chooses.
This was broken by 03449610d6.
To fix it right, it unfortunatly needs to always read the src image now,
in order to determine if the image is being displayed larger, or resized
smaller. When resized smaller, it then always uses the size of the
thumbnail, while for larger it calculates the size.
(Only way to get rid of this sometimes extra image read would be to change
it to not allow displaying images larger.)
Through a complex chain of circumstances, that filtering was causing
dumpsetup to trigger undefined warning messages from the po plugin. But
anyway, munging the otl in htmlize is less error-prone and less expensive,
a win all around.
Loading and use of IkiWiki::Receive can all be pushed into the git plugin,
rather than scattered around.
I had at first wanted to make a receive plugin and move it there,
but a plugin was not a good fit; you don't want users to have to manually
load it, and making the git plugin load the receive plugin at the right
times would need more, and ugly code.
calls are warranted. They shouldn't modify the caller's working directory,
though. Use File::chdir to keep the scope of the changes subroutine-local.
The tests now pass without resetting the working directory.
* In Wrapper.pm, add a new hook "wrapperargcheck" to examine argc/argv
and return success or failure. In the failure case, the wrapper
terminates.
* In cvs.pm, implement the new hook to return failure if a directory is
being cvs added.
having to quote, and the possible use of the shell) sucks. Stop
passing args to cvs_runcvs() as an arrayref, since that also sucks
(and was a sop to IPC::Cmd). Instead, use Joey's construction for
temporarily redirecting stderr to /dev/null. Much much simpler and
better. Works on my laptop with bozohttpd, now to test on the NetBSD
wiki.
TeX has configuration options that prevent unsafe things like shell
escapes and insecure file reads/writes. Turn all of them on.
teximg's regex-based blacklist does not suffice. For instance:
[[!teximg code="""
\catcode`\%=0
%input{/etc/passwd}
"""]]
Remove the blacklist, since the TeX configuration options seal off the
underlying mechanisms more safely, and the blacklist blocks other TeX
commands that can prove useful.
Although imagemagick handles even really large sizes sanely, using a page
file, doing so would just waste time and disk space, since the browser
can be told to resize it larger.
checkconfig can run more than once in a single ikiwiki run if setup is
building wrappers. That clobbered the origsub value for bestlink, leading
to infinite recursion
It's not "exact" since case munging has to be done, and I think
"simple" captures the optimisation better.</pedant>
With apologies to smcv, who probably has to rebuild his wiki now.
Let E be the number of dependencies per page of the form "A depends on B and
nothing else", let D be the number of other dependencies per page,
let P be the total number of pages, and let C be the number of changed
pages in a refresh.
This patch should speed up a refresh from O(E*C*P + D*C*P) to
O(C + E*P + D*C*P), assuming that hash lookups are O(1).
In practice, plugins like inline and map produce a lot of these very simple
dependencies, and my album plugin's combination of inline with a large
number of pages causes it to suffer particularly badly.
In testing on a wiki with about 7000 objects (3500 full pages, 3500
images), a full rebuild continued to take about 5:30, and a refresh
after touching about 350 pages and 350 images reduced from 5:30 to 1:30.
As with my previous optimizations, this change will result in downgrades not
working correctly until the wiki is rebuilt.
This is unnecessary and just slows us down (by a factor of 2, in the
pessimal case where every page has an inline with pagenames); it's also
not possible to optimize it into add_depends_exact calls.
Set rootpage to the non-l10n'd rootpage parameter if it is set,
else to the masterpage of the linking page.
Signed-off-by: intrigeri <intrigeri@boum.org>
The po plugin's injected bestlink must do something special when called by this
exact part of inline's code.
Signed-off-by: intrigeri <intrigeri@boum.org>
... else, the recentchanges page shows a link such as "sandbox.es". But,
clicking on it goes to the English (or negotiated language) version of the page.
It is better in this one case if the link goes direct to the translated version
of the page.
(cherry picked from commit 496e8523c6)
... else, the recentchanges page shows a link such as "sandbox.es". But,
clicking on it goes to the English (or negotiated language) version of the page.
It is better in this one case if the link goes direct to the translated version
of the page.
This should be more efficient than pagespec_match_list since it short-circuits
after the first match is found.
The other problem with using pagespec_match_list here is it may throw an
error if a bad or failing pagespec somehow got into the dependencies.
The new dependency handling works better (eliminates more duplicates) if
dependencies are split up. On the same wiki mentioned in the previous
commit, this saves about a second (i.e. 4%) on the same test.
On a large wiki you can spend a lot of time reading through large lists
of dependencies to see whether files need to be rebuilt (album, with its
one-page-per-photo arrangement, suffers particularly badly from this).
The dependency list is currently a single pagespec, but it's not used like
a normal pagespec - in practice, it's a list of pagespecs joined with the
"or" operator.
Accordingly, change it to be stored as a list of pagespecs. On a wiki
with many tagged photo albums, this reduces the time to refresh after
`touch tags/*.mdwn` from about 31 to 25 seconds.
Getting the benefit of this change on an existing wiki requires a rebuild.
can evaluate them, check them in the wrapper right off the bat.
This doesn't prevent the deadlock in web commits that need to cvs
add directories, but I'm committing so Joey can take a look if he
wants.
This is both faster, and propigates any error in processing the feedpages
pagespec out to display on the page. Which may have been why I didn't use
it before, but currently seems like a good thing to do, since it explains
why your feeds are empty..
If a page is taken from the underlay, and one of the specified languages
does not have po files in the underlay, it would create a broken link
to the translated version of the page for that language.
With this change, there's no broken link.
I think the N/A was not intended to be visible, but it can show up as the
percent translated to a language. This happens if the page is located in an
underlay, and not translated to the language in any other underlay.
Previously, [[!meta redir="foo"]] on bar, where bar/foo exists, would
depend on "foo" (which matches nothing, probably) rather than "bar/foo".
(cherry picked from commit f27ec09b72f886415e63fe394e18d9c3cb3913bf)
Previously, [[!img bar.jpg]] on foo, where foo/bar.jpg exists, would
get a dependency equivalent to "glob(bar.jpg)" (which might not match
anything), rather than the correct "glob(foo/bar.jpg)".
(cherry picked from commit 85b2ec49ecd12dd23e5c432933457a72744ce7cb)
During backlink calulation, all links are examined and broken links can
be detected for free, so store a list of broken links and have brokenlinks
use it.
Exposing the %brokenlinks structure is a bit ugly, but the speedup seems
worth it: Around 1 second for wikis the size of the doc wiki that use
brokenlinks.
By adding this setting, we get both more configurability, and a minor
optimisation too, since gettext does not need to be called continually
to get the Discussion value.
This was impressively broken. add_depends was being called with params
backwards, and on parameter was set to the name of the generated
file, which isn't in the source.
Now updates to images will update the page that contains them, thus
updating them. This is unncessary for fullsize images, so skipped.
Serving up images etc. as text/plain; charset=utf-8 is unlikely to work
very well, and there's no point in having this CGI action for attachments
(since they're copied into the output as-is anyway).
In order to support translated basewiki and other underlays, we need
support for mo files in underlays.
The code did not allow this before, because if a mo file was in an
underlay, then it might try to update it, and its pot, and write to the
underlay, which is guaranteed to either fail due to permissions, or be
undesirable.
To fix, my approach is to just detect if a mo or pot file that is about to
be updated is in an underlay, and skip updating it. This seems to work
well:
- If the mo is out of date in the underlay, it won't get updated, but this
would probably be due to a problem in the underlay, or more likely,
the wiki is being rebuilt and so it *thinks* the mo is out of date,
but it's really not (and it would be a waste of time to rebuild it
anyway).
- If a page from the basewiki is edited, it is saved to the srcdir,
which causes generation of an updated mo and pot also in the srcdir;
the underlay stops being used for that page, and everything seems
to work.
Note that I am not including an underlay search directory for pot files.
They *seem* to be unnecessary for the underlay, since the mo files
in there never need to be updated.
These are for use by wikis where the primary language is not English.
On such a wiki, it makes sense to use an underlay has the source for pages
in the native language.
On various sites I have two IkiWiki instances running from the same
repository: one accessible via http and only accepting openid logins,
and one accessible via authenticated https and only accepting httpauth.
The https version should still pretty-print OpenIDs seen in git history,
even though it does not itself accept OpenID logins.
openiduser previously used a constructor that no longer works in 2.x.
However, all we actually want is the (undocumented) DisplayOfURL function
that is invoked by the display method, so try to use that.
(cherry picked from commit c3dd0ff5c7c10743107f203a5b456fdcd1b171df)
If given instead of pages, this is interpreted as a space-separated
list of links to pages (with the same LinkingRules as in a WikiLink),
and they are inlined in exactly the order given. The sort and pages
parameters cannot be used in conjunction with this one.
Besides being wrong to do, this could lead to the wrong item
being expired, as follows: If B is added and at the same time
A is changed, then A's ctime may be set to the current time,
while B's is set to its creation time. Thus the new item, A,
is incorrectly removed as older.
(This interacted especially badly with the bug fixed by
90b4d079605b72bb50d1da41402d994960e10937.)
The aggregate state merge code neglected to merge changes to the md5
field of an item. Therefore, if an item's md5 changed after initial
aggregation, it would be updated, and rewritten, each time thereafter.
This was wasteful and indirectly led to some expire problems.
This reverts commit 2ed033a4aa.
It has been more properly fixed in upstream's master, that will be merged in
immediately.
Signed-off-by: intrigeri <intrigeri@boum.org>
Rationalle: Comments need to be user-editable so that they can be posted
via git commit etc.
The _comment directive is still supported, for back-compat.
Setting up a new highlighter object is slightly expensive since it
reads and parses the langfile each time. So cache them.
This also speeds up ext2langfile by avoiding it needing to check for the
existence of a language file in some cases.
format: Provide a htmlizefallback hook that other plugins can use to
handle formats that are not suitable for general-purpose htmlize hooks.
highlight: Use the hook to allow formatting of any language/extension,
without it needing to be enabled for standalone source files.
highlight: If the highlight perl binding is not available, fallback
safely to a passthrough mode.
We build an array of [ plugin name, long name ] pairs, where long name
is an optional argument to hook(). So, a syntax plugin could define
long "friendly" name, such as "Markdown" instead of mdwn, and we would
then pass this array to formbuilder to populate the drop-down on the
edit page.
This is sorta an optimisation, and sorta a bug fix. In one
test case I have available, it can speed a page build up from 3
minutes to 3 seconds.
The root of the problem is that $links{$page} contains arrays of
links, rather than hashes of links. And when a link is found,
it is just pushed onto the array, without checking for dups.
Now, the array is emptied before scanning a page, so there
should not be a lot of opportunity for lots of duplicate links
to pile up in it. But, in some cases, they can, and if there
are hundreds of duplicate links in the array, then scanning it
for matching links, as match_link and some other code does,
becomes much more expensive than it needs to be.
Perhaps the real right fix would be to change the data structure
to a hash. But, the list of links is never accessed like that,
you always want to iterate through it.
I also looked at deduping the list in saveindex, but that does
a lot of unnecessary work, and doesn't completly solve the problem.
So, finally, I decided to add an add_link function that handles deduping,
and make ikiwiki-transition remove the old dup links.
When finding the pageurl, it was calling bestlink unnecessarily.
Since at this point $page contains the full name of the page that
is being inlined, there is no need to do bestlink's scan
for it.
This is only a minor optimisation, since bestlink is only called
once per displayed, inlined page.
This reverts commit 2f96c49bd1.
I forgot about internal pages. We don't want * matching them!
I left the optimisation in pagecount, where it used to live.
Internal pages probably don't matter when they're just being
counted.
I forgot to check if it was called from preprocess, and it is
not; it's called by a format hook. If an error is thrown from
a format hook, wiki build fails, so we don't want that.
* pagespec_match_list: New API function, matches pages in a list
and throws an error if the pagespec is bad.
* inline, brokenlinks, calendar, linkmap, map, orphans, pagecount,
pagestate, postsparkline: Display a handy error message if the pagespec
is erronious.
* Add IkiWiki::ErrorReason objects, and modify pagespecs to return
them in cases where they fail to match due to a configuration or syntax
error.
* inline: Display a handy error message if the inline cannot display any
pages due to such an error.
This is perhaps somewhat incomplete, as other users of pagespecs do not
display the error, and will eventually need similar modifications to inline.
I should probably factor out a pagespec_match_all function and make it throw
ErrorReasons.
The munged ids were looking pretty nasty, and were not completly guaranteed
to be unique. So a md5sum seems like a better approach. (Would have used
sha1, but md5 is in perl core.)
Well, that was a PITA.
Luckily, this doesn't break guids to comments in rss feeds,
though it does change the links.
I haven't put in a warning about needing to rebuild to get
this fix. It's probably good enough for new comments to get the
fix, without a lot of mass rebuilding.
It would be better to use urlto() here, but will_render
has not yet been called on the feed files at this point, so
it won't work. (And reorganizing so it can be is tricky.)
I guess what's happening here is that since the name
is passed to git via an environment variable, perl's normal
utf-8 IO layer stuff doesn't work. So we have to explicitly
decode the string from perl's internal representation into
utf-8.
This change was introduced in 85f865b5d9 and
c3af3840a2 ; it may be necessary for the meta-po
integration, but the po branch alone is supposed to work without it.
Signed-off-by: intrigeri <intrigeri@boum.org>
This makes wikis such as zack's much faster in the scan pass.
In that pass, when a template contains an inline, there is no reason to
process the entire inline and all its pages. I'd forgotten to pass
along the flag to let preprocess() know it was in scan mode, leading to
much unncessary churning.
- In 3.05, ikiwiki began expanding templates in scan mode,
for annoying, expensive, but ultimatly necessary reasons
of correctness.
- Smiley processing has a bug: It inserts a span for the smiley,
and then continues searching forward in the content for more,
starting at $end_of_smiley+1. Which means it searches for smilies
in the span too! And if it somehow finds one, we get an infinite loop
here.
- This bug can, probably, only be tickled if a htmllink to
show the smiley fails, because the smiley file doesn't exist,
or because ikiwiki doesn't know about it. In that case,
a link will be inserted to _create_ the missing page,
and that link will include the smiley inside the <a></a>.
- When a template is expanded in scan mode, and it contains
an inline, the sanitize hook is run during scan mode,
which never happened before. That causes the smiley processor
to run, before ikiwiki is, necessarily, aware that all
the smiley files exist (depending on scan order). So
it inserts creation links for them, and triggers the bug.
I've put in the simple fix of jumping forward past the inserted
span, and it does fix the problem. I will need to look in a bit
more detail into why an inline nested inside a template is
fully expanded during the scan pass -- that really shouldn't
be necessary, and it makes things much slower than they need
to be.
... as Joey suggested on todo/need_global_renamepage_hook
This hook is applied recursively to returned additional rename
hashes, so that it handles the case where two plugins use the hook:
plugin A would see when plugin B adds a new file to be renamed.
The full set of rename hashes can no longer be changed by hook functions, that
are only allowed to return any additional rename hashes it wants to add.
Rationale: the correct behavior of the recursion would be hard, if not
impossible, to define, if already considered pages were changing on the run.
Signed-off-by: intrigeri <intrigeri@boum.org>
This means that the underlay needs to have a wmd/wmd/wmd.js,
which is a trifle weird, but it isolates all the wmd stuff in a
single wmd subdirectory of the built wiki. The wmd/images creating
a toplevel images directory was particularly bad.
This is likely a misconfiguration and can cause login to fail as the
browser refuses the send the session cookie back over http.
Not entirely happy with putting the check where I did, since users have to
try to log in, and fail, to see the misconfiguration explained. But I could
not find a better place to put the check.
This is potentially expensive, but is necessary so that meta and tag
directives, and other links on templates affect the page using the template
reliably.
It no longer makes sense to keep these functions in editpage, because
serveral plugins now exist that use them, and users may want to disable
editpage, while leaving those plugins enabled.
Most notably, comments uses both functions, and it's entirely appropriate
to disable editpage but still want to have comments enabled.
Less likely, attachments, rename, and remove all use check_canedit -- but
it would be unusual indeed to want to use these w/o editpage.
Falls back to looking for shortcuts.mdwn for backwards compatabiity; there
probably exist wikis that have changed the pageext but still use
shortcuts.mdwn.
See [[bugs/Aggregated_Atom_feeds_are_double-encoded]]. By default,
XML::Atom outputs strings of UTF-8 bytes with the Perl UTF8 flag stripped
off, which IkiWiki assumes to be Latin-1 and re-encodes as UTF-8 on
output. XML::Feed does not currently (0.41-1) set the magic variable to
change this behaviour (I've filed a bug on CPAN), but IkiWiki can
usefully set the same variable as a workaround.
This may already work with other web servers that have copied apache's
interface, and it should be easy to add support to it for web servers that
use some other interface. So, make the name more general.
This redirects to the given page (or if none is given, the page parameter
given to the CGI), or displays an error with a create link if the page
doesn't exist.
... as my meta branch probably won't be merged before the po plugin is, contrary
to what I was originally supposing.
This implies removing the po_translation_status_in_links and
po_strictly_refresh_backlinks options.
Added a note to the TODO section to think of bringing these features back later,
as they really enhance user experience on a translatable wiki.
Signed-off-by: intrigeri <intrigeri@boum.org>
This is intended to solve Joey's concerns expressed on
http://ikiwiki.info/todo/need_global_renamepage_hook/, i.e. the need to make it
possible to use this hook from external plugins.
A plugin using this hook still can add/modify/remove elements of the
@torename array.
Signed-off-by: intrigeri <intrigeri@boum.org>
... that was removed in 68869d664b
Without this scalar, a two-cells array is passed to $template->param, which
builds a hash with an odd number of elements.
Signed-off-by: intrigeri <intrigeri@boum.org>
After some thinking about it, I can't find why the type of a page being created
in the CGI could be restricted to po. So the previous case seems enough.
Signed-off-by: intrigeri <intrigeri@boum.org>
check_canremove/canrename is called only for its side effect (of failing if
removal is not allowed), its return value is never used and returning
something makes that unclear
use is file-scoped so warnings and strict are already enabled
inside the second package, and IkiWiki is already loaded
(though not imported into this context)
It was calling format hooks for each comment on the page.
When relativedate is enabled, that made it insert <script> tags
for each comment. And the browser loaded the same script over and over,
which was slow on its own. But that was nothing compared to running
the onload even over and over.. especially since the hook system
added a new call to the hook each time it loaded.
For a page with 10 comments, that caused the relativedate DOM parsing
code to run 1000 times, I think. Anyway, it was sloow. Now it runs once.
if suitable alternate text is unknown, then it should not be given.
empty alt text is suitable mainly for purely decorative images.
(cherry picked from commit 3cd7f67f0cf894f4fd5ba16f68e82e4f7bdbfdc5)
Always pass the full (modified) content in `content` named parameter. When the
user edits an existing wiki page, also pass a `diff` named parameter, which
includes only the lines that they added to the page, or modified.
Signed-off-by: intrigeri <intrigeri@boum.org>
Some aggregators, like Planet, sort by mtime rather than ctime. This
means that posts with modified content come to the top (which seems odd
to me, but is presumably what the aggregator's author or operator
wants), but it also means that posts with insignificant edits (like
adding tags) come to the top too. Atom defines <updated> to be the date
of the last *significant* change, so it's fine that ikiwiki defaults to
using the mtime, but it would be good to have a way for the author to
say "that edit was insignificant, don't use that mtime".
That resulted in double encoded display when using perl's stub
readline module. Apparently that module unconditionally upgrades
text to utf8, in a quite braindead way.
(Term::ReadLine::Gnu::Perl worked ok.)
Use mtn for monontone and hg for mercurial. The long names cause ugly
formatting in recentchanges, which has CSS that only allows a few
characters for the commit type column.
All meta titles are first extracted at scan time, i.e. before we turn
PO files back into translated markdown; escaping of double-quotes in
PO files breaks the meta plugin's parsing enough to save ugly titles
to %pagestate at this time.
Then, at render time, every page's passes on row through the Great
Rendering Chain (filter->preprocess->linkify->htmlize), and the meta
plugin's preprocess hook is this time in a position to correctly
extract the titles from slave pages.
This is, unfortunately, too late: if the page A, linking to the page B,
is rendered before B, it will display the wrongly-extracted meta title
as the link text to B.
On the one hand, such a corner case only happens on rebuild: on
refresh, every rendered page is fixed to contain correct meta titles.
On the other hand, it can take some time to get every page fixed.
We therefore re-render every rendered page after a rebuild to fix them
at once. As this more or less doubles the time needed to rebuild the
wiki, we do so only when really needed.
Signed-off-by: intrigeri <intrigeri@boum.org>
It will set up an ikiwiki instance tuned for use in blogging.
As part of this change, move the example sites into /usr/share/ikiwiki so
they are available even if docs are not installed.
Asking for only the head worked in my tests, but I've found a site where it
didn't -- apparently ikiwiki didn't get a chance to do or finish the
refresh when HEADed. Getting the whole url, waiting for ikiwiki to finish,
avoided the update problem.
* repolist: New plugin to support the rel=vcs-* microformat.
* goodstuff: Include repolist by default. (But it does nothing until
configured with the repository locations.)
Form validation works, but after trying to save invalid PO content, the user is
brought back to the page he/she was editing, without any single clue to explain
why it was not saved. The dedicated cansave hook is thus necessary.
Signed-off-by: intrigeri <intrigeri@boum.org>
This has to be done after the rename/remove plugins have added
their buttons, so we set this hook to be run last.
The canrename/canremove hooks already ensure this is forbidden
at the backend level, so this is only UI sugar.
Signed-off-by: intrigeri <intrigeri@boum.org>
The main reason to do so is to bypass the "favor the type of linking page on
page creation" logic, which is unsuitable when a broken link is clicked on
a slave (PO) page.
Signed-off-by: intrigeri <intrigeri@boum.org>
This is not needed by the use I'm doing of it, but seems more consistent to me.
Future users of this hook may need this data to make their mind.
Signed-off-by: intrigeri <intrigeri@boum.org>
... so that nicepagetitle hook's effects, such as translation status displayed
in links, are updated when the linked page changes.
The replacement of 'my %backlinks' with 'our %backlinks' in Render.pm made this
work: previously, every postscan hook was called with an almost empty
%backlinks, which defeated all my attempts to implement this feature.
This feature hits performance a bit. Its cost was quite small in my real-world
use-cases (a few percents bigger refresh time), but could be bigger in worst
cases. Time will tell.
NB: this hack could also be used by my meta branch. It may even be a ikiwiki
optional feature.
Signed-off-by: intrigeri <intrigeri@boum.org>
Thanks to the new rename hook behaviour, the whole renaming work is now done
by the rename plugin, and we don't need to remember which pages were renamed.
inline has a format hook that is an optimisation hack. Until this hook
runs, the inlined content is not present on the page. This can prevent
other format hooks, that process that content, from acting on inlined
content. In bug ##509710, we discovered this happened commonly for the
embed plugin, but it could in theory happen for many other plugins (color,
cutpaste, etc) that use format to fill in special html after sanitization.
The ordering was essentially random (hash key order). That's kinda a good
thing, because hooks should be independent of other hooks and able to run
in any order. But for things like inline, that just doesn't work.
To fix the immediate problem, let's make hooks able to be registered as
running "first". There was already the ability to make them run "last".
Now, this simple first/middle/last ordering is obviously not going to work
if a lot of things need to run first, or last, since then we'll be back to
being unable to specify ordering inside those sets. But before worrying about
that too much, and considering dependency ordering, etc, observe how few
plugins use last ordering: Exactly one needs it. And, so far, exactly one
needs first ordering. So for now, KISS.
Another implementation note: I could have sorted the plugins with
first/last/middle as the primary key, and plugin name secondary, to get a
guaranteed stable order. Instead, I chose to preserve hash order. Two
opposing things pulled me toward that decision:
1. Since has order is randomish, it will ensure that no accidental
ordering assumptions are made.
2. Assume for a minute that ordering matters a lot more than expected.
Drastically changing the order a particular configuration uses could
result in a lot of subtle bugs cropping up. (I hope this assumption is
false, partly due to #1, but can't rule it out.)
People seem to be able to expect to enter www.foo.com and get away with it.
The resulting my.wiki/www.foo.com link was not ideal.
To fix it, use URI::Heuristic to expand such things into a real url. It
even looks up hostnames in the DNS if necessary.
A new ikiwiki-transition moveprefs subcommand can pull the old data out of
the userdb and inject it into the setup file.
Note that it leaves the old values behind in the userdb too. I did this
because I didn't want to lose data if it fails writing the setup file for
some reason, and the old data in the userdb will only use a small amount of
space. Running the command multiple times will mostly not change anything.