File cython_use_imgmath.patch of Package python-Cython.20117

From 452627ce99f3fa180f85838b8208a3cb3fcf0b71 Mon Sep 17 00:00:00 2001
From: Stefan Behnel <stefan_ml@behnel.de>
Date: Sun, 27 Jan 2019 16:43:41 +0100
Subject: [PATCH] Docs: switch from outdated "pngmath" sphinx package to
 "imgmath", and use "svg" as output format. See #2818.

---
 docs/conf.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/docs/conf.py b/docs/conf.py
index 10662e28ca..c20a57574e 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -41,7 +41,7 @@
 extensions = [
     'ipython_console_highlighting',
     'cython_highlighting',
-    'sphinx.ext.pngmath',
+    'sphinx.ext.imgmath',
     'sphinx.ext.todo',
     'sphinx.ext.intersphinx',
     'sphinx.ext.autodoc'
@@ -132,6 +132,9 @@
 # If true, keep warnings as "system message" paragraphs in the built documents.
 #keep_warnings = False
 
+# The output image format. The default is 'png'. It should be either 'png' or 'svg'.
+imgmath_image_format = "svg"
+
 
 # -- Options for HTML output ---------------------------------------------------