5 files changed, 20 insertions, 72 deletions
diff --git a/macros/latex/required/babel/base/README.md b/macros/latex/required/babel/base/README.md
index 74e4830b48..371dcfb50d 100644
--- a/macros/latex/required/babel/base/README.md
+++ b/macros/latex/required/babel/base/README.md
@@ -1,4 +1,4 @@
-## Babel 3.77
+## Babel 3.78
 
 This package manages culturally-determined typographical (and other)
 rules, and hyphenation patterns for a wide range of languages. Many
@@ -8,9 +8,9 @@ is a set of ini files for about 250 languages.
 
 The latest stable version is available on <https://ctan.org/pkg/babel>.
 
-Changes in version 3.77 are described in:
+Changes in version 3.78 are described in:
 
-https://latex3.github.io/babel/news/whats-new-in-babel-3.77.html
+https://latex3.github.io/babel/news/whats-new-in-babel-3.78.html
 
 Apart from the manual, you can find information on some aspects of babel at:
 
@@ -46,19 +46,13 @@ respective authors.
 
 ### Summary of latest changes
 ```
-3.77   2022-06-26
-       * More on calendar conversions (\localedate, \today).
-       * New calendars: 'coptic' (ar-EG, cop), 'buddhist' (th).
-       * New Arabic locale for Saudi Arabia, with the Umm al-Qura
-         calendar.
-       * Date now defaults to 'persian' in a few locales: Persian,
-         Northern Luri, Mazanderani, Pashto.
-       * `bangla` is now the preferred name for `bengali`.
-       * Attempt to deal with 'german' and 'swissgerman', whose names
-         conflict with the CLDR ones.
-       * More minor updates to the CLDR 41: Afrikaans, Arabic, Assamese,
-         Asturian, Azerbaijani, Belarusian, Bulgarian, Bangla, Tibetan,
-         Breton, Bodo, Bosnian, Catalan, English.
+3.78   2022-07-20
+       * Fix: Undefined \bbl@xenohyph with Thai (#182).
+       * More minor updates to the CLDR 41: Chechen, Cherokee, Central
+         Kurdish, Czech, Welsh, Danish, German, Lower Sorbian,
+         Dzongkha, Ewe, Greek, Esperanto, Spanish, Estonian, Persian,
+         Finnish, Filipino, Faroese, Western Frisian, Irish, Scottish
+         Gaelic.
 ```
 
 ### Previous changes
diff --git a/macros/latex/required/babel/base/babel.dtx b/macros/latex/required/babel/base/babel.dtx
index 21493d3f4e..d9ebe75a44 100644
--- a/macros/latex/required/babel/base/babel.dtx
+++ b/macros/latex/required/babel/base/babel.dtx
@@ -32,7 +32,7 @@
 %
 % \iffalse
 %<*filedriver>
-\ProvidesFile{babel.dtx}[2022/06/26 v3.77 The Babel package]
+\ProvidesFile{babel.dtx}[2022/07/20 v3.78 The Babel package]
 \documentclass{ltxdoc}
 \GetFileInfo{babel.dtx}
 \usepackage{fontspec}
@@ -3116,9 +3116,9 @@ font encodings are the same, like in Unicode based engines.
 \end{note}
 
 \begin{note}
-  To set hyphenation exceptions in the preamble before any language is
-  explicitly set with a selector, use |\babelhyphenation| instead of
-  |\hyphenation|. In the preamble the hyphenation rules are not always
+  Use |\babelhyphenation| instead of |\hyphenation| to set hyphenation
+  exceptions in the preamble before any language is explicitly set with
+  a selector. In the preamble the hyphenation rules are not always
   fully set up and an error can be raised.
 \end{note}
 
@@ -5171,8 +5171,8 @@ help from Bernd Raichle, for which I am grateful.
 % \section{Tools}
 %
 %    \begin{macrocode}
-%<<version=3.77>>
-%<<date=2022/06/26>>
+%<<version=3.78>>
+%<<date=2022/07/20>>
 %    \end{macrocode}
 %
 % \textbf{Do not use the following macros in \texttt{ldf} files. They
@@ -5947,6 +5947,7 @@ help from Bernd Raichle, for which I am grateful.
 %    \begin{macrocode}
 \ifx\bbl@opt@safe\@undefined
   \def\bbl@opt@safe{BR}
+  % \let\bbl@opt@safe\@empty % -- By September 
 \fi
 %    \end{macrocode}
 %
@@ -10940,7 +10941,7 @@ help from Bernd Raichle, for which I am grateful.
       {\bbl@exp{\\\bbl@ifblank{\bbl@cs{prehc@#1}}}%
         {}%
         {\ifx\bbl@xenohyph\@undefined
-           \let\bbl@xenohyph\bbl@xenohyph@d
+           \global\let\bbl@xenohyph\bbl@xenohyph@d
            \ifx\AtBeginDocument\@notprerr
              \expandafter\@secondoftwo  % to execute right now
            \fi
@@ -13105,53 +13106,6 @@ help from Bernd Raichle, for which I am grateful.
 %
 %    \begin{macrocode}
 \def\bbl@font@fams{rm,sf,tt}
-%    \end{macrocode}
-%
-% The old tentative way. Short and preverved for compatibility, but
-% deprecated. Note there is no direct alternative for
-% |\babelFSfeatures|. The reason in explained in the user guide, but
-% essentially -- that was not the way to go :-).
-%
-%    \begin{macrocode}
-\newcommand\babelFSstore[2][]{%
-  \bbl@ifblank{#1}%
-    {\bbl@csarg\def{sname@#2}{Latin}}%
-    {\bbl@csarg\def{sname@#2}{#1}}%
-  \bbl@provide@dirs{#2}%
-  \bbl@csarg\ifnum{wdir@#2}>\z@
-    \let\bbl@beforeforeign\leavevmode
-    \EnableBabelHook{babel-bidi}%
-  \fi
-  \bbl@foreach{#2}{%
-    \bbl@FSstore{##1}{rm}\rmdefault\bbl@save@rmdefault
-    \bbl@FSstore{##1}{sf}\sfdefault\bbl@save@sfdefault
-    \bbl@FSstore{##1}{tt}\ttdefault\bbl@save@ttdefault}}
-\def\bbl@FSstore#1#2#3#4{%
-  \bbl@csarg\edef{#2default#1}{#3}%
-  \expandafter\addto\csname extras#1\endcsname{%
-    \let#4#3%
-    \ifx#3\f@family
-      \edef#3{\csname bbl@#2default#1\endcsname}%
-      \fontfamily{#3}\selectfont
-    \else
-      \edef#3{\csname bbl@#2default#1\endcsname}%
-    \fi}%
-  \expandafter\addto\csname noextras#1\endcsname{%
-    \ifx#3\f@family
-      \fontfamily{#4}\selectfont
-    \fi
-    \let#3#4}}
-\let\bbl@langfeatures\@empty
-\def\babelFSfeatures{% make sure \fontspec is redefined once
-  \let\bbl@ori@fontspec\fontspec
-  \renewcommand\fontspec[1][]{%
-    \bbl@ori@fontspec[\bbl@langfeatures##1]}
-  \let\babelFSfeatures\bbl@FSfeatures
-  \babelFSfeatures}
-\def\bbl@FSfeatures#1#2{%
-  \expandafter\addto\csname extras#1\endcsname{%
-    \babel@save\bbl@langfeatures
-    \edef\bbl@langfeatures{#2,}}}
 %<</Font selection>>
 %    \end{macrocode}
 %
diff --git a/macros/latex/required/babel/base/babel.ins b/macros/latex/required/babel/base/babel.ins
index 007c7d6b9b..13a22deb6a 100644
--- a/macros/latex/required/babel/base/babel.ins
+++ b/macros/latex/required/babel/base/babel.ins
@@ -26,7 +26,7 @@
 %% and covered by LPPL is defined by the unpacking scripts (with
 %% extension .ins) which are part of the distribution.
 %%
-\def\filedate{2022/06/26}
+\def\filedate{2022/07/20}
 \def\batchfile{babel.ins}
 \input docstrip.tex
 
diff --git a/macros/latex/required/babel/base/babel.pdf b/macros/latex/required/babel/base/babel.pdf
index 1e47810554..8d2d9a776d 100644
--- a/macros/latex/required/babel/base/babel.pdf
+++ b/macros/latex/required/babel/base/babel.pdf
diff --git a/macros/latex/required/babel/base/bbcompat.dtx b/macros/latex/required/babel/base/bbcompat.dtx
index 5538587a42..c8f85ad5b6 100644
--- a/macros/latex/required/babel/base/bbcompat.dtx
+++ b/macros/latex/required/babel/base/bbcompat.dtx
@@ -30,7 +30,7 @@
 %
 % \iffalse
 %<*dtx>
-\ProvidesFile{bbcompat.dtx}[2022/06/26 v3.77]
+\ProvidesFile{bbcompat.dtx}[2022/07/20 v3.78]
 %</dtx>
 %
 %% File 'bbcompat.dtx'