qapi/block-core.json: Use literal block for ascii art
The ascii-art graph in the BlockLatencyHistogramInfo documentation
doesn't render correctly, because the whitespace is collapsed.
Use the '|' format that emits a literal 'example' block so the graph
is displayed correctly.
Strictly the Texinfo generated is still wrong because each line
goes into its own @example environment, but it renders better
than what we had before.
Fixing this rendering is a necessary prerequisite for the upcoming rST
generator, which otherwise complains about the inconsistent
indentation in the ascii-art graph.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20200213175647.17628-8-peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/qapi/block-core.json b/qapi/block-core.json
index ef94a29..db9ca68 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -550,13 +550,13 @@
# For the example above, @bins may be something like [3, 1, 5, 2],
# and corresponding histogram looks like:
#
-# 5| *
-# 4| *
-# 3| * *
-# 2| * * *
-# 1| * * * *
-# +------------------
-# 10 50 100
+# | 5| *
+# | 4| *
+# | 3| * *
+# | 2| * * *
+# | 1| * * * *
+# | +------------------
+# | 10 50 100
#
# Since: 4.0
##
