+
+>> Ok, I've had a bit of a think about this. There are currently 15 supported
+>> meta fields. Of these: title, licence, copyright, author, authorurl,
+>> and robots might make sense to define globally and override on a per-page
+>> basis.
+>>
+>> Less so, description (due to its impact on map); openid (why would
+>> someone want more than one URI to act as an openid endpoint to the same
+>> place?); updated. I can almost see why someone might want to set a global
+>> updated value. Almost.
+>>
+>> Not useful are permalink, date, stylesheet (you already have a global
+>> stylesheet), link, redir, and guid.
+>>
+>> In other words, the limitations of my first patch that [[smcv]] outlined
+>> are only relevant to defined fields that you wouldn't want to specify a
+>> global default for anyway.
+>>
+>>> I generally agree with this. It is *possible* that meta would have a new
+>>> field added, that takes parameters and make sense to use globally.
+>>> --[[Joey]]
+>>
+>> Due to this, and the added complexity of the second patch (having to adjust
+>> `IkiWiki/Setup.pm`), I think the first patch makes more sense. I've thus
+>> reverted to it here.
+>>
+>> Is this merge-worthy?
+
+ diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
+ index b229592..3132257 100644
+ --- a/IkiWiki/Plugin/meta.pm
+ +++ b/IkiWiki/Plugin/meta.pm
+ @@ -13,6 +13,7 @@ sub import {
+ hook(type => "needsbuild", id => "meta", call => \&needsbuild);
+ hook(type => "preprocess", id => "meta", call => \&preprocess, scan => 1);
+ hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
+ + hook(type => "scan", id => "meta", call => \&scan);
+ }
+
+ sub getsetup () {
+ @@ -302,6 +303,15 @@ sub match {
+ }
+ }
+
+ +sub scan() {
+ + my %params = @_;
+ + my $page = $params{page};
+ + foreach my $type (map { s/^meta_//; $_ } grep /^meta_/, keys %config) {
+ + $pagestate{$page}{meta}{$type} = $config{"meta_$type"}
+ + unless defined $pagestate{$page}{meta}{$type};
+ + }
+ +}
+ +
+ package IkiWiki::PageSpec;
+
+ sub match_title ($$;@) {
+ diff --git a/doc/ikiwiki/directive/meta.mdwn b/doc/ikiwiki/directive/meta.mdwn
+ index 000f461..200c4b2 100644
+ --- a/doc/ikiwiki/directive/meta.mdwn
+ +++ b/doc/ikiwiki/directive/meta.mdwn
+ @@ -12,6 +12,12 @@ also specifies some additional sub-parameters.
+ The field values are treated as HTML entity-escaped text, so you can include
+ a quote in the text by writing `"` and so on.
+
+ +You can also define site-wide defaults for meta values by including them
+ +in your setup file, e.g.
+ +
+ + meta_copyright => "Copyright 2007 by Joey Hess",
+ + meta_license => "GPL v2+",
+ +
+ Supported fields:
+
+ * title
+
+-- [[Jon]]
+
+>>> Merry Christmas/festive season/happy new year folks. I've been away from
+>>> ikiwiki for the break, and now I've returned to watching recentchanges.
+>>> Hopefully I'll be back in the mix soon, too. In the meantime, Joey, have
+>>> you had a chance to look at this yet? -- [[Jon]]
+
+>>>> Ping :) Hi. [[Joey]], would you consider this patch for the next
+>>>> ikiwiki release? -- [[Jon]]
+
+>>> For this to work with websetup and --dumpsetup, it needs to define the
+>>> `meta_*` settings in the getsetup function.
+>>>>
+>>>> I think this will be problematic with the current implementation of this
+>>>> patch. The datatype here is an array of hash references, with each hash
+>>>> having a variable (and arbitrary) number of key/value pairs. I can't
+>>>> think of an intuitive way of implementing a way of editing such a
+>>>> datatype in the web interface, let alone registering the option in
+>>>> getsetup.
+>>>>
+>>>> Perhaps a limited set of defined meta values could be exposed via
+>>>> websetup (the obvious ones: author, copyright, license, etc.) -- [[Jon]]
+>>>
+>>> I also have some concerns about both these patches, since both throw
+>>> a lot of redundant data at meta, which then stores it in a very redundant
+>>> way. Specifically, meta populates a per-page `%metaheaders` hash
+>>> as well as storing per-page metadata in `%pagestate`. So, if you have
+>>> a wiki with 10 thousand pages, and you add a 1k site-wide license text,
+>>> that will bloat the memory usage of ikiwiki by in excess of 2
+>>> megabytes. It will also cause ikiwiki to write a similar amount more data
+>>> to its state file which has to be loaded back in each
+>>> run.
+>>>
+>>> Seems that this could be managed much more efficiently by having
+>>> meta special-case the site-wide settings, not store them in these
+>>> per-page data structures, and just make them be used if no per-page
+>>> metadata of the given type is present. --[[Joey]]
+>>>>
+>>>> that should be easy enough to do. I will work on a patch. -- [[Jon]]