Fix #2069 -- proper locale support for section links

Signed-off-by: Chris Warrick <kwpolska@gmail.com>

CHANGES.txt

@@ -3,6 +3,7 @@ New in master
 
 Features
 --------
+
 * Support UTF-8 paths and encoded links when the ``USE_SLUGIFY`` option
   is disabled. (Issue #2037)
 * Per-document hyphenation using "hyphenate" metadata flag.
@@ -17,6 +18,7 @@ Features
 Bugfixes
 --------
 
+* Generate language-specific section links (Issue #2069)
 * Handle metadata in post files that start with a BOM (Issue #2059)
 * Handle error downloading bootswatches (Issue #2054)
 * Monitor plugins/ in ``nikola auto`` (Issue #2044)

nikola/post.py

@@ -745,11 +745,16 @@ def section_color(self, lang=None):
 
     def section_link(self, lang=None):
         """Return the link to the post's section."""
+        if lang is None:
+            lang = nikola.utils.LocaleBorg().current_lang
+
         slug = self.section_slug(lang)
+        t = os.path.normpath(self.translations[lang])
+        if t == '.':
+            t = ''
+        link = '/' + '/'.join(i for i in (t, slug) if i) + '/'
         if not self.pretty_urls:
-            link = urljoin('/' + slug + '/', self.index_file)
-        else:
-            link = '/' + slug + '/'
+            link = urljoin(link, self.index_file)
         link = utils.encodelink(link)
         return link