sphinx: add qmp_lexer

Sphinx, through Pygments, does not like annotated json examples very
much. In some versions of Sphinx (1.7), it will render the non-json
portions of code blocks in red, but in newer versions (2.0) it will
throw an exception and not highlight the block at all. Though we can
suppress this warning, it doesn't bring back highlighting on non-strict
json blocks.

We can alleviate this by creating a custom lexer for QMP examples that
allows us to properly highlight these examples in a robust way, keeping
our directionality and elision notations.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reported-by: Aarushi Mehta <mehta.aaru20@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20190603214653.29369-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/docs/conf.py b/docs/conf.py
index befbcc6c3e..e46b299b71 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -41,7 +41,7 @@ except NameError:
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use an absolute path starting from qemu_docdir.
 #
-# sys.path.insert(0, os.path.join(qemu_docdir, "my_subdir"))
+sys.path.insert(0, os.path.join(qemu_docdir, "sphinx"))
 
 
 # -- General configuration ------------------------------------------------
@@ -54,7 +54,7 @@ needs_sphinx = '1.3'
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = []
+extensions = ['qmp_lexer']
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']