connection between alias direcive and autotag

doc/todo/alias_directive.mdwn

@@ -27,8 +27,8 @@ suggested for addition (possibly by means of a plugin):
 > >     <!-- there are so many people who misspell this, let's create a redirect -->
 > >     \[[!alias Grece list=false]] 
 >
-> This page by itself will redirect from the "Hellas" and "Hellenic Republic"
+> This page by itself will redirect from the "Hellas", "Hellenic Republic" and
-> pages as if they both contained just:
+> "Grece" pages as if they both contained just:
 >
 > >     \[[!meta redir="Greece"]]
 >
@@ -44,4 +44,29 @@ The proposed plugin/directive could be extended, eg. by also including
 old-style redirects in the alias list, but that might introduce unwanted
 coupling with the meta directive.
 
+-----------------
+
+On second thought, implementing this might have similarities with
+[[todo/auto-create tag pages according to a template]] -- the auto-created
+pages would, if the way of the alias directive is followed, not create physical
+files, though, but be created just when someone edits them.
+
+If multiple plugins do such a trick, they would have to fight over who comes
+first. If, for example, we have a setup where not yet created tag pages are
+automatically generated as "\[[!inline  pages="link(<TMPL_VAR TAG>)"
+archive="yes"]]" and aliases are enabled, and a non-tag pages grabs a tag as an
+alias (as to redirect all taglinks of the tag to itself), there are two
+possibilities:
+
+* The autotag plugin comes first:
+    * autotag sees the missing tag and creates its "\[[!inline" stuff
+    * alias sees that there is already content and adds its prefix
+* The alias plugin comes first (this is the prefered way):
+    * alias sees the empty page, sees it is not contested by other alias
+      directives and creates its "\[[!meta" redirect
+    * autotag sees there is already content and doesn't do anything
+
+That issue could be handled with "priority number" on the hook, with plugins
+with a lower number being called first.
+
 [[!tag wishlist]]

doc/todo/auto-create_tag_pages_according_to_a_template.mdwn

@@ -248,4 +248,17 @@ I've tested it fairly thouroughly. --[[Joey]]
 [a358d74bef51dae31332ff27e897fe04834571e6]: http://git.liegesta.at/?p=ikiwiki.git;a=commitdiff;h=a358d74bef51dae31332ff27e897fe04834571e6 (commitdiff for a358d74bef51dae31332ff27e897fe04834571e6)
 [981400177d68a279f485727be3f013e68f0bf691]: http://git.liegesta.at/?p=ikiwiki.git;a=commitdiff;h=981400177d68a279f485727be3f013e68f0bf691 (commitdiff for 981400177d68a279f485727be3f013e68f0bf691)
 
+-------------------
+
+Even if this is already marked as done, I'd like to suggest an alternative
+solution:
+
+Instead of creating a file that gets checked in into the RCS, the source files
+could be left out and the output files be written as long as there is no
+physical source file (think of a virtual underlay). Something similar would be
+required to implement [[todo/alias directive]], which couldn't be easily done
+by writing to the RCS as the page's contents can change depending on which
+other pages claim it as an alias. --[[chrysn]]
+
+
 [[!tag done]]