Added a comment

diff --git a/doc/forum/missing_pages_redirected_to_search-SOLVED/comment_2_bc0291b1afc2e9b4a853c168d3adfd78._comment b/doc/forum/missing_pages_redirected_to_search-SOLVED/comment_2_bc0291b1afc2e9b4a853c168d3adfd78._comment
new file mode 100644 (file)
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+++ b/doc/forum/missing_pages_redirected_to_search-SOLVED/comment_2_bc0291b1afc2e9b4a853c168d3adfd78._comment
@@ -0,0 +1,83 @@
+[[!comment format=mdwn
+ username="https://launchpad.net/~eliasson"
+ nickname="eliasson"
+ subject="comment 2"
+ date="2016-01-31T20:07:52Z"
+ content="""
+Using Apache 2.4.10 (Debian 8's package) I solved it the following way:
+
+1. In the Apache site configuration, set `ErrorDocument 404` to the ikiwiki.cgi URL path.
+2. Apply the following patch to the plugins search and 404. The easiest and probably cleanest way is to copy the plugins to your `$libdir/IkiWiki/Plugins` and edit them there. It works with xapian omega search but wouldn't work with google, since the *P* CGI parameter is not set (instead, omega uses the `QUERY_STRING` environment variable). Perhaps one day I'll make this a proper patch and submit as a pull request.
+
+[Apache 2.4.13 adds support](https://httpd.apache.org/docs/2.4/mod/core.html#errordocument) for dynamic strings in `ErrorDocument`s, so you could do something similar to the solution for Nginx above. Until that is packaged in your stable Linux distro of choice, this hack can be used.
+
+<pre>
+<code>
+diff --git a/IkiWiki/Plugin/404.pm b/IkiWiki/Plugin/404.pm
+index 42cfa9e..a12fd40 100644
+--- a/IkiWiki/Plugin/404.pm
++++ b/IkiWiki/Plugin/404.pm
+@@ -74,7 +74,9 @@ sub cgi ($) {
+               my $page = cgi_page_from_404(
+                       Encode::decode_utf8($ENV{REDIRECT_URL}),
+                       $config{url}, $config{usedirs});
+-              IkiWiki::Plugin::goto::cgi_goto($cgi, $page);
++
++              $ENV{QUERY_STRING}=\"P=$page\";
++              IkiWiki::Plugin::search::search($cgi);
+       }
+ }
+ 
+diff --git a/IkiWiki/Plugin/search.pm b/IkiWiki/Plugin/search.pm
+index 24b16fe..24d7b3c 100644
+--- a/IkiWiki/Plugin/search.pm
++++ b/IkiWiki/Plugin/search.pm
+@@ -183,24 +183,31 @@ sub delete (@) {
+       }
+ }
+ 
++sub search($) {
++      my $cgi=shift;
++
++      if ($config{google_search}) {
++              print $cgi->redirect(\"https://www.google.com/search?sitesearch=$config{url}&q=\".$cgi->param('P'));
++              exit 0;
++      }
++      else {
++              # only works for GET requests
++              chdir(\"$config{wikistatedir}/xapian\") || error(\"chdir: $!\");
++              $ENV{OMEGA_CONFIG_FILE}=\"./omega.conf\";
++              $ENV{CGIURL}=IkiWiki::cgiurl();
++              IkiWiki::loadindex();
++              $ENV{HELPLINK}=htmllink(\"\", \"\", \"ikiwiki/searching\",
++                                      noimageinline => 1, linktext => \"Help\");
++
++              exec($config{omega_cgi}) || error(\"$config{omega_cgi} failed: $!\");
++      }
++}
++
+ sub cgi ($) {
+       my $cgi=shift;
+ 
+       if (defined $cgi->param('P')) {
+-              if ($config{google_search}) {
+-                      print $cgi->redirect(\"https://www.google.com/search?sitesearch=$config{url}&q=\".$cgi->param('P'));
+-                      exit 0;
+-              }
+-              else {
+-                      # only works for GET requests
+-                      chdir(\"$config{wikistatedir}/xapian\") || error(\"chdir: $!\");
+-                      $ENV{OMEGA_CONFIG_FILE}=\"./omega.conf\";
+-                      $ENV{CGIURL}=IkiWiki::cgiurl();
+-                      IkiWiki::loadindex();
+-                      $ENV{HELPLINK}=htmllink(\"\", \"\", \"ikiwiki/searching\",
+-                              noimageinline => 1, linktext => \"Help\");
+-                      exec($config{omega_cgi}) || error(\"$config{omega_cgi} failed: $!\");
+-              }
++              search($cgi);
+       }
+ }
+ 
+</code>
+</pre>
+"""]]