Pathologic not working with localized paths

Taking a closer look at the issue (I was in a big rush trying to complete the content migration), it seems the problem is not with URL aliases with non-ASCII characters, as quite a few of them are working well, and creating test pages with a bunch of exotic characters as a title worked fine. In the contrary, some URL aliases containing only ASCII characters were broken.

I thought it could be related to language or content type settings, as the problem seems to affect primarily content in another language than English, but once more when making tests all is fine. Moreover, when changing either the title or the URL path (disabling Pathauto), even if the URL alias gets updated (it is in the URL aliases list in Drupal AND is in the url_alias table in the database) it is not possible to access the content using the URL alias (I get a "Page not found"), and that's why Pathologic is not able to convert "node/123" into "content/page-title". All caches are cleared an disabled. i18n and language settings are set to "display all content" and "no language negociation".

To sum up, some (and not all) content is accessible only by using the internal URL and their URL alias is not working although it do exists, even if we change or update the alias or the content. It seems to happen primarily to non-English content. And I have no idea of which module is causing these aliases not to work, and why some are working and some other aren't.

OK, I think the problem is spotted : URL aliases are not working if a node has no default language version (currently English) and is not Language neutral, although it shows up with the internal URL, as in the i18n settings I checked to display "All content. No language conditions apply." without path prefix.

Basically, if you default language is set to English :
- you create a node in "Language neutral" -> the URL alias works
- you create a node in English -> the URL alias works
- you create a node in English then translate it to another language -> the URL alias works only for the English version
- you create a node in another language than English and with no translation, or your trying to access a translation in another language than English -> the URL alias doesn't work

In my case some URL aliases were working for non-English content because they were mistakenly set as "Language Neutral" when creating the node.

I think the problem is related to the core Path module, so I'll report the bug there.

I reopen the issue after tracking the situation at http://drupal.org/node/347265

I've changed some of my settings to use path prefixes for languages. My site's default language is still English.

The good news is that all content is now accessible through an URL alias. For example, all my Spanish content is available at http://mysite.tld/es/url-alias.

The bad news is that if I make a link to a Spanish page from an English page (linking to the NID), Pathologic won't convert "node/123" into "content/page-title".
A little schema :

• English (default language) page: link converted when linking to another English page
• English page: link not converted when linking to a non-English page
• Spanish page: link not converted when linking to another Spanish or non-English page
• Spanish page: link not converted when linking to an English page

Hmmm, finally it definitively looks like a Pathologic-related issue since other modules are displaying URL aliases correctly.

Test case you can easily recreate when using i18n module:

• You enable translation of a content type, let's say "page" ("Multilanguage enabled, with translation" when editing the content type)
• You create a page "Test page" in English, then translate it into French "Page de test" using the "Translate" option
• When viewing one of these pages, there will be a link to the translations of this page, at the bottom of the content. So when viewing the English page "Test page", you will see a link labeled "Français" to a URL like "http://mysite.tld/fr/content/page-de-test"
• On the contrary, if you edit the English page's content and want to make a link to the French one using it's node ID, Pathologic will not translate the "node/[id]" url into the URL alias

Do you confirm the behavior? Is that a compatibility issue with i18n module?

It definitely comes down the way localized url aliases are managed in Drupal core. I'm closing this issue, one could track the issue on #347265: URL aliases not working for content not in default language