Plugin and com_redirect only redirect after a 404 error has been occured. It's not meant to redirect "good URLs".

Thanks. Then whats the point to add "NEW" option?

Good question. I have the feeling that at one time we could redirect any link there.

Yes, also can increase performance, by not using extensions for custom redirects, when fixed.

"NEW" it for manually add the link that leads to 404 error , without waiting when the plugin "System - redirect" add a record to the database when the error 404 happens ....

I suppose that your link do not leads to 404 error,
Anyway your description do not contain enough information to reproduce the bug

Redirections are a simple thing nowadays, you don't need a 404 error to create one.
Even if you change an article alias you have to create a 301 redirect to avoid duplicated content from spiders which means lower ranking.
I never said it was a bug.

1) It's a very very old legend that e.g. a changed alias is interpreted as DC by search engines or that this results in a penalty. Several times negated by Google.
2) I don't think that it would be a good idea to use com_redirect for none-404-redirects via plugin events at any page load because of performance reasons. Use rewrite rules inside your .htaccess that are performed before Joomla "starts working".

Google suggest 301 for duplicated content.
https://support.google.com/webmasters/answer/66359?hl=en
Duplicated content can affect page rank if the number is too big. This is seo, a lot of different details.

My opinion is to use htaccess for path redirects or when redesign the url structure. For single URL redirects i would suggest the system - redirect. With the logic you follow then 404 redirects would also be moved to htaccess.

Manos :)

If URL leads to the existing content, then CMS must render it,
and if not exist then CMS show "not found" error.

As I understand com_redirect was designed to help, when the content was moved and available in another URL.
Just use htaccess for normal links, if you really need it, as @illovo suggested
or put your content offline or remove, for force the 404 error, for make com_redirect work

Joomla will render content even if the alias was changed. So no 404 error will occur to make a redirect from com_redirect. so duplicated content. so you can not do anything. so you have to install an extension or use htaccess.

I know what to do to solve the problem, i just asked for confirmation.

I insist, non-404 single url redirects should work from com_redirect. It's a very basic function.

@ManuxGR

I insist, non-404 single url redirects should work from com_redirect. It's a very basic function.

Why you want to redirect a existing URL?

Joomla will render content even if the alias was changed.

hmm i can't reprdouce this:

What i do

• install staging with testing sample data
• access this page: http://www.example.org/index.php/popular-tags
• change alias at the backend: Menu --> All Modules --> Popular Tags
• from popular-tags to popular-tags2
• reload: http://www.example.org/index.php/popular-tags
• 404 error

Hmmm, probably it happens only with articles.
Check this article.

Canonical link:
http://magazine.joomla.org/issues/issue-nov-2014/item/2383-wheels-up-jwc14

Lets say we change the alias of the article with id 2383 to this:
http://magazine.joomla.org/issues/issue-nov-2014/item/2383-wheels-test-url

Both links are going to work properly pointing to same content.

@ManuxGR this is a well know issue.

@zero-24 Thanks for let me know.

Sorry, posted too late. Closed already.

@ManuxGR
You should read and understand exactly the informations that you linked to about malicious and non-malicious dc. You'll find several additional statements on youtube from Google explainig that there is no penalty.

"non-404 single url redirects should work from com_redirect. It's a very basic function.". It's the badest solution concerning performance. You need a DB request for any single page load. Your link at google shows several better and practicable solutions. Therefore I insist ( ;-) ) that a general redirect functionality should not be established in Joomla core/redirect plugin.

On the other hand com_redirect doesn't block saving non-404 URLs. Thus you just need another sytem plugin redirecting the way you want.

@zero-24
I think he's talking about URLs/aliases like /58-my-old-alias versus /58-my-new-alias. Both will show the same page.

@illovo

I think he's talking about URLs/aliases like /58-my-old-alias versus /58-my-new-alias. Both will show the same page.

Yes and this is the well known issue i mean IIRC this will be fixed with the router changes.

Do we know at which version will be fixed?

@ManuxGR no as they has not merged jet and or not proposed.

See: http://joomlager.de/crowdfunding and https://www.indiegogo.com/projects/advance-the-joomla-url-router/

I think the proposed are here: https://github.com/joomla/joomla-cms/pulls?q=is%3Aopen+is%3Apr+author%3Ahackwar+routing

and / or here https://github.com/joomla/joomla-cms/pulls/hackwar

but IIRC the final PR that fix this problem is not out atm.

I have the same problem ... same article have 2 urls ... anything new about this?