Fix #2395: Sphinx crashs if unicode character in image filename

CHANGES

@@ -29,6 +29,7 @@ Bugs fixed
 * #2412: Fix hyperlink targets are broken in LaTeX builder
 * Fix figure directive crashes if non paragraph item is given as caption
 * #2418: Fix time formats no longer allowed in today_fmt
+* #2395: Fix Sphinx crashs if unicode character in image filename
 
 
 Release 1.4 (released Mar 28, 2016)

sphinx/config.py

@@ -58,7 +58,7 @@ class Config(object):
 
         language = (None, 'env', string_classes),
         locale_dirs = ([], 'env'),
-        figure_language_filename = ('{root}.{language}{ext}', 'env', [str]),
+        figure_language_filename = (u'{root}.{language}{ext}', 'env', [str]),
 
         master_doc = ('contents', 'env'),
         source_suffix = (['.rst'], 'env'),

tests/roots/test-image-glob/index.rst

@@ -12,3 +12,5 @@ test-image-glob
 .. figure:: img.*
 
    The caption of img
+
+.. image:: testimäge.png

tests/test_intl.py

@@ -841,7 +841,7 @@ def test_image_glob_intl(app, status, warning):
 
 @with_app(buildername='dummy', testroot='image-glob',
           confoverrides={'language': 'xx',
-                         'figure_language_filename': '{root}{ext}.{language}'})
+                         'figure_language_filename': u'{root}{ext}.{language}'})
 def test_image_glob_intl_using_figure_language_filename(app, status, warning):
     app.builder.build_all()