[Shimizukawa Takayuki]

Sphinx's i18n feature needs "node.source" and "node.line" value for translation process.

(see also: https://sourceforge.net/p/docutils/patches/100/)

Sphinx extract translation target message from parsed doctree. Sphinx uses nodes that are instance of nodes.TextElement and have source information as translation target messages:

https://bitbucket.org/birkenfeld/sphinx/src/776565367102/sphinx/util/nodes.py#cl-63

Docutils parses admonition directive as nodes.admonition. nodes.admonition has child node as nodes.title but it doesn't have source/line information.

Could you set source information to term node? I attach a patch to do it.

I applied a simplified patch:

• admonition_node.document = self.state_machine.document

I don't think adding the document to an admonition node is the right thing.
(Provide arguments if/why this is really required.)

Replaced the newline-escaping backslash with parentheses.

The goal is to set the line and source to the nodes.title instance. admonition_node.__add__(child) need admonition.document to set source and line to child.

If I just order to achieve the object, I set source and line attribute to nodes.title instance directly (new docutils-admonition-title2.patch did).

The second patch is better.
Alternatively, you can store .source and .line in the admonition node
and let the translator look up node.parent.source/line.

• status: open --> pending-remind

Applied patch version 2. Please check out and test.

It's OK!
I tested with docutils-0.11. Sorry for late reply.