Fix #2466: Allow image.data_uri and image.nonlocal_uri as confval of suppress_warnings

CHANGES

@@ -4,7 +4,15 @@ Release 1.4.2 (in development)
 Features added
 --------------
 
-* Now :confval:`suppress_warnings` accepts following configurations: ``app.add_node``, ``app.add_directive``, ``app.add_role`` and ``app.add_generic_role`` (ref: #2451)
+* Now :confval:`suppress_warnings` accepts following configurations (ref: #2451, #2466):
+
+  - ``app.add_node``
+  - ``app.add_directive``
+  - ``app.add_role``
+  - ``app.add_generic_role``
+  - ``image.data_uri``
+  - ``image.nonlocal_uri``
+
 * LaTeX writer allows page breaks in topic contents; and their horizontal
   extent now fits in the line width (shadow in margin). Warning-type
   admonitions allow page breaks (if very long) and their vertical spacing

doc/config.rst

@@ -222,6 +222,8 @@ General configuration
    * app.add_directive
    * app.add_role
    * app.add_generic_role
+   * image.data_uri
+   * image.nonlocal_uri
    * ref.term
    * ref.ref
    * ref.numref

sphinx/environment.py

@@ -908,11 +908,13 @@ class BuildEnvironment:
             node['candidates'] = candidates = {}
             imguri = node['uri']
             if imguri.startswith('data:'):
-                self.warn_node('image data URI found. some builders might not support', node)
+                self.warn_node('image data URI found. some builders might not support', node,
+                               type='image', subtype='data_uri')
                 candidates['?'] = imguri
                 continue
             elif imguri.find('://') != -1:
-                self.warn_node('nonlocal image URI found: %s' % imguri, node)
+                self.warn_node('nonlocal image URI found: %s' % imguri, node,
+                               type='image', subtype='nonlocal_uri')
                 candidates['?'] = imguri
                 continue
             rel_imgpath, full_imgpath = self.relfn2path(imguri, docname)