refs #3093: gettext build broken on substituted images.

CHANGES

@@ -11,6 +11,7 @@ Bugs fixed
 * #3074: ``add_source_parser()`` crashes in debug mode
 * #3135: ``sphinx.ext.autodoc`` crashes with plain Callable
 * #3150: Fix query word splitter in JavaScript. It behaves as same as Python's regular expression.
+* #3093: gettext build broken on substituted images.
 
 Release 1.4.8 (released Oct 1, 2016)
 ====================================

sphinx/transforms.py

@@ -166,7 +166,7 @@ class ApplySourceWorkaround(Transform):
 
     def apply(self):
         for n in self.document.traverse():
-            if isinstance(n, nodes.TextElement):
+            if isinstance(n, (nodes.TextElement, nodes.image)):
                 apply_source_workaround(n)
 
 
@@ -192,7 +192,7 @@ class ExtraTranslatableNodes(Transform):
     """
     make nodes translatable
     """
-    default_priority = 10
+    default_priority = 9
 
     def apply(self):
         targets = self.document.settings.env.config.gettext_additional_targets

sphinx/util/nodes.py

@@ -46,6 +46,8 @@ def apply_source_workaround(node):
         node.source = definition_list_item.source
         node.line = definition_list_item.line - 1
         node.rawsource = node.astext()  # set 'classifier1' (or 'classifier2')
+    if isinstance(node, nodes.image) and node.source is None:
+        node.source, node.line = node.parent.source, node.parent.line
     if isinstance(node, nodes.term):
         # strip classifier from rawsource of term
         for classifier in reversed(node.parent.traverse(nodes.classifier)):