Did not test, but Code style should be:

            if (!$advanced && count($array))
            {
                $array[0] = (int) $catid . ':' . $array[0];

                if (count($array) > 1)
                {
                    $array[count($array) - 1] = (int) $catid . ':' . $array[count($array) - 1];
                }
            }

@test it still said /index.php/alias1?view=form when i turnon SEF :D

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@tairedweb I can't get you.

/index.php/alias1?view=form - always gives 403

could you please create separate bug report with exact steps to reproduce?

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@test It's working for me
@tairedweb I don't see any link as you talked

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@oneumyvakin worked :D

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@test I also tested this and it seems that the patch is working properly. I was redirected to the correct category when I searched for tag1.

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@test,
category link is redirected successfully, but when i click on the 'tag1'(index.php/component/tags/tag/2) which displays 'category2' link, when i click on the link(index.php/13-alias1/13-alias2), it give me "404 Article not found" error.

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I'm unable to replicate this problem. I created a search menu item to check this other than that I followed the steps to reproduce.

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@AnishaVora Yes, I can reproduce this. Start working to fix this.

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Fix is ready.

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@Hackwar Is this not something you are also working on?

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Added Patch and tried it the Problem still exist.
The ID for categorie 2 will set in the URL one step forward as id for categorie 1
http://127.0.0.1/bugtesting/index.php/component/content/category/79-alias1/alias2
number 79 is mine ID of categorie 2.

I tested it with Joomla version: 3.4.4-dev development

• SEF is enabled
• Patch was installed successful

1) Created category1 (ID is set by system - mine is 78) with alias1
2) Created category2 (ID is set by system - mine is 79) with alias2 and category1 as the parent
3) Created a tag named tag1
4) Assigned tag1 to category2
5) Searched for tag1 and got this link as a result to category2:
http://localhost/wpw2/bugtesting/index.php/component/content/category/79-alias1/alias2

6) Still Error 404 - So the test was not successful

@oneumyvakin Can you follow up on the test results and make the needed changes to your pull request? Thank you.

@roland-d to be clear, i've submitted this bug and patch two years ago for version 3.3.3, and it works for this version, and it was abandoned for the one year, and after the one year, on version 3.4.4, suddenly, fix became not working. This situation is not ok for me. So I've decide to do not contributing to Joomla any more.

@oneumyvakin Thank you for your response. The behavior you described happens when the same files you changed are changed by someone else. I will close this PR now as we have a new router merged for Joomla 3.6.