diff --git a/CHANGES b/CHANGES
index e0aa26272..027900621 100644
--- a/CHANGES
+++ b/CHANGES
@@ -277,7 +277,7 @@ Documentation
 * #5083: Fix wrong make.bat option for internationalization.
 * #5115: napoleon: add admonitions added by #4613 to the docs.
 
-Release 1.7.8 (in development)
+Release 1.7.9 (in development)
 ==============================
 
 Dependencies
@@ -295,12 +295,26 @@ Features added
 Bugs fixed
 ----------
 
+Testing
+--------
+
+Release 1.7.8 (released Aug 29, 2018)
+=====================================
+
+Incompatible changes
+--------------------
+
+* The type of ``env.included`` has been changed to dict of set
+
+Bugs fixed
+----------
+
 * #5320: intersphinx: crashed if invalid url given
 * #5326: manpage: crashed when invalid docname is specified as ``man_pages``
 * #5322: autodoc: ``Any`` typehint causes formatting error
-
-Testing
---------
+* #5327: "document isn't included in any toctree" warning on rebuild with
+  generated files
+* #5335: quickstart: escape sequence has been displayed with MacPorts' python
 
 Release 1.7.7 (released Aug 19, 2018)
 =====================================
diff --git a/sphinx/cmd/quickstart.py b/sphinx/cmd/quickstart.py
index fdc42725b..0cb2350c6 100644
--- a/sphinx/cmd/quickstart.py
+++ b/sphinx/cmd/quickstart.py
@@ -26,10 +26,12 @@ try:
     import readline
     if readline.__doc__ and 'libedit' in readline.__doc__:
         readline.parse_and_bind("bind ^I rl_complete")
+        USE_LIBEDIT = True
     else:
         readline.parse_and_bind("tab: complete")
+        USE_LIBEDIT = False
 except ImportError:
-    pass
+    USE_LIBEDIT = False
 
 from docutils.utils import column_width
 from six import PY2, PY3, text_type, binary_type
@@ -197,7 +199,13 @@ def do_prompt(text, default=None, validator=nonempty):
                         prompt = prompt.encode('utf-8')
                     except UnicodeEncodeError:
                         prompt = prompt.encode('latin1')
-        prompt = colorize(COLOR_QUESTION, prompt, input_mode=True)
+        if USE_LIBEDIT:
+            # Note: libedit has a problem for combination of ``input()`` and escape
+            # sequence (see #5335).  To avoid the problem, all prompts are not colored
+            # on libedit.
+            pass
+        else:
+            prompt = colorize(COLOR_QUESTION, prompt, input_mode=True)
         x = term_input(prompt).strip()
         if default and not x:
             x = default
diff --git a/sphinx/environment/__init__.py b/sphinx/environment/__init__.py
index 772a1c989..93174006f 100644
--- a/sphinx/environment/__init__.py
+++ b/sphinx/environment/__init__.py
@@ -19,7 +19,7 @@ from os import path
 
 from docutils.utils import get_source_line
 from six import BytesIO, next
-from six.moves import cPickle as pickle
+from six.moves import cPickle as pickle, reduce
 
 from sphinx import addnodes
 from sphinx.deprecation import RemovedInSphinx20Warning, RemovedInSphinx30Warning
@@ -139,7 +139,8 @@ class BuildEnvironment(object):
         self.dependencies = defaultdict(set)    # type: Dict[unicode, Set[unicode]]
                                     # docname -> set of dependent file
                                     # names, relative to documentation root
-        self.included = set()       # type: Set[unicode]
+        self.included = defaultdict(set)        # type: Dict[unicode, Set[unicode]]
+                                    # docname -> set of included file
                                     # docnames included from other documents
         self.reread_always = set()  # type: Set[unicode]
                                     # docnames to re-read unconditionally on
@@ -315,8 +316,8 @@ class BuildEnvironment(object):
         """Remove all traces of a source file in the inventory."""
         if docname in self.all_docs:
             self.all_docs.pop(docname, None)
+            self.included.pop(docname, None)
             self.reread_always.discard(docname)
-            self.included.discard(docname)
 
         for domain in self.domains.values():
             domain.clear_doc(docname)
@@ -331,12 +332,17 @@ class BuildEnvironment(object):
         docnames = set(docnames)  # type: ignore
         for docname in docnames:
             self.all_docs[docname] = other.all_docs[docname]
+            self.included[docname] = other.included[docname]
             if docname in other.reread_always:
                 self.reread_always.add(docname)
 
         for docname in other.included:
             self.included.add(docname)
 
+        for version, changes in other.versionchanges.items():
+            self.versionchanges.setdefault(version, []).extend(
+                change for change in changes if change[1] in docnames)
+
         for domainname, domain in self.domains.items():
             domain.merge_domaindata(docnames, other.domaindata[domainname])
         app.emit('env-merge-info', self, docnames, other)
@@ -552,7 +558,7 @@ class BuildEnvironment(object):
 
         *filename* should be absolute or relative to the source directory.
         """
-        self.included.add(self.path2doc(filename))
+        self.included[self.docname].add(self.path2doc(filename))
 
     def note_reread(self):
         # type: () -> None
@@ -721,12 +727,13 @@ class BuildEnvironment(object):
     def check_consistency(self):
         # type: () -> None
         """Do consistency checks."""
+        included = reduce(lambda x, y: x | y, self.included.values(), set())  # type: Set[unicode]  # NOQA
         for docname in sorted(self.all_docs):
             if docname not in self.files_to_rebuild:
                 if docname == self.config.master_doc:
                     # the master file is not included anywhere ;)
                     continue
-                if docname in self.included:
+                if docname in included:
                     # the document is included from other documents
                     continue
                 if 'orphan' in self.metadata[docname]: