Merge branch '4.0.x' into 4.x

CHANGES

@@ -98,7 +98,11 @@ Features added
 Bugs fixed
 ----------
 
-* 9313: LaTeX: complex table with merged cells broken since 4.0
+* #9330: changeset domain: :rst:dir:`versionchanged` with contents being a list
+  will cause error during pdf build
+* #9313: LaTeX: complex table with merged cells broken since 4.0
+* #9305: LaTeX: backslash may cause Improper discretionary list pdf build error
+  with Japanese engines
 
 Testing
 --------

sphinx/domains/changeset.py

@@ -74,8 +74,10 @@ class VersionChange(SphinxDirective):
         if self.content:
             self.state.nested_parse(self.content, self.content_offset, node)
         classes = ['versionmodified', versionlabel_classes[self.name]]
-        if len(node):
+        if len(node) > 0 and isinstance(node[0], nodes.paragraph):
-            if isinstance(node[0], nodes.paragraph) and node[0].rawsource:
+            # the contents start with a paragraph
+            if node[0].rawsource:
+                # make the first paragraph translatable
                 content = nodes.inline(node[0].rawsource, translatable=True)
                 content.source = node[0].source
                 content.line = node[0].line
@@ -84,10 +86,16 @@ class VersionChange(SphinxDirective):
 
             para = cast(nodes.paragraph, node[0])
             para.insert(0, nodes.inline('', '%s: ' % text, classes=classes))
-        else:
+        elif len(node) > 0:
+            # the contents do not starts with a paragraph
             para = nodes.paragraph('', '',
-                                   nodes.inline('', '%s.' % text,
+                                   nodes.inline('', '%s: ' % text, classes=classes),
-                                                classes=classes),
+                                   translatable=False)
+            node.insert(0, para)
+        else:
+            # the contents are empty
+            para = nodes.paragraph('', '',
+                                   nodes.inline('', '%s.' % text, classes=classes),
                                    translatable=False)
             node.append(para)
 

sphinx/texinputs/sphinxlatexliterals.sty

@@ -765,7 +765,8 @@
       % break at . , ; ? ! /
       \sphinxbreaksviaactive
       % break also at \
-      \let\sphinx@textbackslash\textbackslash
+      \setbox8=\hbox{\textbackslash}%
+      \def\sphinx@textbackslash{\copy8}%
       \let\textbackslash\sphinxtextbackslash
       % by default, no continuation symbol on next line but may be added
       \let\sphinxafterbreak\sphinxafterbreakofinlineliteral