latex builder fails in case no caption option is provided to toctree directive

[splendido]

sphinx@1.4.1
docutils@0.12

this line is trying to check whether a caption option was provided to the toctree directive or not before trying to get the option value.
But at the moment if fails when no caption is provided making docutils throw the following error:

  File "/usr/local/lib/python2.7/dist-packages/sphinx/cmdline.py", line 244, in main
    app.build(opts.force_all, filenames)
  File "/usr/local/lib/python2.7/dist-packages/sphinx/application.py", line 287, in build
    self.builder.build_update()
  File "/usr/local/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 246, in build_update
    self.build(['__all__'], to_build)
  File "/usr/local/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 322, in build
    self.write(docnames, list(updated_docnames), method)
  File "/usr/local/lib/python2.7/dist-packages/sphinx/builders/latex.py", line 130, in write
    doctree.settings.contentsname = self.get_contentsname(docname)
  File "/usr/local/lib/python2.7/dist-packages/sphinx/builders/latex.py", line 140, in get_contentsname
    if toctree['caption']:
  File "/usr/local/lib/python2.7/dist-packages/docutils/nodes.py", line 567, in __getitem__
    return self.attributes[key]
KeyError: 'caption'

The problem can be easily fixed by substituting the very same line with:

if 'caption' in toctree:

Please let me know if you'd like me to prepare a PR with the proposed fix.

[tk0miya]

I'll take a look.

[tk0miya]

Fixed at 88322af
Thank you for report!

[splendido]

👍