Remove configuration option html_signaturereturn_icon.

doc/usage/configuration.rst

@@ -1191,13 +1191,6 @@ that use Sphinx's HTMLWriter class.
 
    .. versionadded:: 3.5
 
-.. confval:: html_signaturereturn_icon
-
-   A text for prepended to the type hint for the return type of a function or
-   method.  HTML tags are allowed.  Default: an arrow; ``→``
-
-   .. versionadded:: 4.1
-
 .. confval:: html_sidebars
 
    Custom sidebar templates, must be a dictionary that maps document names to

sphinx/builders/html/__init__.py

@@ -1320,7 +1320,6 @@ def setup(app: Sphinx) -> Dict[str, Any]:
     app.add_config_value('html_add_permalinks', UNSET, 'html')
     app.add_config_value('html_permalinks', True, 'html')
     app.add_config_value('html_permalinks_icon', '¶', 'html')
-    app.add_config_value('html_signaturereturn_icon', '→', 'html')
     app.add_config_value('html_use_index', True, 'html')
     app.add_config_value('html_split_index', False, 'html')
     app.add_config_value('html_copy_source', True, 'html')

sphinx/writers/html.py

@@ -174,9 +174,9 @@ def depart_desc_type(self, node: Element) -> None:
         pass
 
     def visit_desc_returns(self, node: Element) -> None:
-        self.body.append(' <span class="sig-return"><span class="sig-return-icon">')
-        self.body.append(self.config.html_signaturereturn_icon)
-        self.body.append('</span> <span class="sig-return-typehint">')
+        self.body.append(' <span class="sig-return">')
+        self.body.append('<span class="sig-return-icon">&#x2192;</span>')
+        self.body.append(' <span class="sig-return-typehint">')
 
     def depart_desc_returns(self, node: Element) -> None:
         self.body.append('</span></span>')

sphinx/writers/html5.py

@@ -145,9 +145,9 @@ def depart_desc_type(self, node: Element) -> None:
         pass
 
     def visit_desc_returns(self, node: Element) -> None:
-        self.body.append(' <span class="sig-return"><span class="sig-return-icon">')
-        self.body.append(self.config.html_signaturereturn_icon)
-        self.body.append('</span> <span class="sig-return-typehint">')
+        self.body.append(' <span class="sig-return">')
+        self.body.append('<span class="sig-return-icon">&#x2192;</span>')
+        self.body.append(' <span class="sig-return-typehint">')
 
     def depart_desc_returns(self, node: Element) -> None:
         self.body.append('</span></span>')

tests/test_build_html.py

@@ -1628,17 +1628,8 @@ def test_html_permalink_icon(app):
 
 
 @pytest.mark.sphinx('html', testroot='html_signaturereturn_icon')
-def test_html_signaturereturn_icon_default(app):
+def test_html_signaturereturn_icon(app):
     app.build()
     content = (app.outdir / 'index.html').read_text()
 
     assert ('<span class="sig-return-icon">&#x2192;</span>' in content)
-
-
-@pytest.mark.sphinx('html', testroot='html_signaturereturn_icon',
-                    confoverrides={'html_signaturereturn_icon': '<span>RETURN</span>'})
-def test_html_signaturereturn_icon_custon(app):
-    app.build()
-    content = (app.outdir / 'index.html').read_text()
-
-    assert ('<span class="sig-return-icon"><span>RETURN</span></span>' in content)