Fix #4434: pure numbers as link targets produce warning

CHANGES

@@ -20,6 +20,7 @@ Bugs fixed
 * #4412: Updated jQuery version from 3.1.0 to 3.2.1
 * #4438: math: math with labels with whitespace cause html error
 * #2437: make full reference for classes, aliased with "alias of"
+* #4434: pure numbers as link targets produce warning
 
 Testing
 --------

sphinx/domains/std.py

@@ -607,8 +607,9 @@ class StandardDomain(Domain):
             if node.tagname == 'target' and 'refid' in node:  # indirect hyperlink targets
                 node = document.ids.get(node['refid'])
                 labelid = node['names'][0]
-            if name.isdigit() or 'refuri' in node or \
-               node.tagname.startswith('desc_'):
+            if (node.tagname == 'footnote' or
+                    'refuri' in node or
+                    node.tagname.startswith('desc_')):
                 # ignore footnote labels, labels automatically generated from a
                 # link and object descriptions
                 continue

tests/roots/test-root/markup.txt

@@ -1,6 +1,7 @@
 :tocdepth: 2
 
 .. title:: set by title directive
+.. _1024:
 
 Testing various markup
 ======================
@@ -152,6 +153,7 @@ Adding \n to test unescaping.
 * :ref:`my-table-name`
 * :ref:`my-code-block`
 * :ref:`my-code-block-name`
+* :ref:`1024`
 * :numref:`my-figure`
 * :numref:`my-figure-name`
 * :numref:`my-table`

tests/test_build_html.py

@@ -270,6 +270,8 @@ def test_html_warnings(app, warning):
         # tests for ``any`` role
         (".//a[@href='#with']/span", 'headings'),
         (".//a[@href='objects.html#func_without_body']/code/span", 'objects'),
+        # tests for numeric labels
+        (".//a[@href='#id1'][@class='reference internal']/span", 'Testing various markup'),
         # tests for smartypants
         (".//li", u'Smart “quotes” in English ‘text’.'),
         (".//li", u'Smart — long and – short dashes.'),

tests/test_build_html5.py

@@ -179,6 +179,8 @@ def cached_etree_parse():
         # tests for ``any`` role
         (".//a[@href='#with']/span", 'headings'),
         (".//a[@href='objects.html#func_without_body']/code/span", 'objects'),
+        # tests for numeric labels
+        (".//a[@href='#id1'][@class='reference internal']/span", 'Testing various markup'),
     ],
     'objects.html': [
         (".//dt[@id='mod.Cls.meth1']", ''),

tests/test_build_latex.py

@@ -130,24 +130,24 @@ def test_writer(app, status, warning):
 
     assert ('\\begin{sphinxfigure-in-table}\n\\centering\n\\capstart\n'
             '\\noindent\\sphinxincludegraphics{{img}.png}\n'
-            '\\sphinxfigcaption{figure in table}\\label{\\detokenize{markup:id7}}'
+            '\\sphinxfigcaption{figure in table}\\label{\\detokenize{markup:id8}}'
             '\\end{sphinxfigure-in-table}\\relax' in result)
 
     assert ('\\begin{wrapfigure}{r}{0pt}\n\\centering\n'
             '\\noindent\\sphinxincludegraphics{{rimg}.png}\n'
-            '\\caption{figure with align option}\\label{\\detokenize{markup:id8}}'
+            '\\caption{figure with align option}\\label{\\detokenize{markup:id9}}'
             '\\end{wrapfigure}' in result)
 
     assert ('\\begin{wrapfigure}{r}{0.500\\linewidth}\n\\centering\n'
             '\\noindent\\sphinxincludegraphics{{rimg}.png}\n'
             '\\caption{figure with align \\& figwidth option}'
-            '\\label{\\detokenize{markup:id9}}'
+            '\\label{\\detokenize{markup:id10}}'
             '\\end{wrapfigure}' in result)
 
     assert ('\\begin{wrapfigure}{r}{3cm}\n\\centering\n'
             '\\noindent\\sphinxincludegraphics[width=3cm]{{rimg}.png}\n'
             '\\caption{figure with align \\& width option}'
-            '\\label{\\detokenize{markup:id10}}'
+            '\\label{\\detokenize{markup:id11}}'
             '\\end{wrapfigure}' in result)