11 files changed, 32 insertions, 23 deletions
diff --git a/Master/texmf-dist/doc/latex/babel/README.md b/Master/texmf-dist/doc/latex/babel/README.md
index 4d56195cf3c..92c1e3d3669 100644
--- a/Master/texmf-dist/doc/latex/babel/README.md
+++ b/Master/texmf-dist/doc/latex/babel/README.md
@@ -1,4 +1,4 @@
-## Babel 3.72
+## Babel 3.73
 
 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 3.72 are described in:
+Changes in version 3.73 are described in:
 
-https://latex3.github.io/babel/news/whats-new-in-babel-3.72.html
+https://latex3.github.io/babel/news/whats-new-in-babel-3.73.html
 
 Apart from the manual, you can find information on some aspects of babel at:
 
@@ -46,6 +46,10 @@ respective authors.
 
 ### Summary of Latest changes
 ```
+3.73   2022-02-26
+       * Fixes a severe bug introduced in 3.72 when amsmath is
+         loaded.
+
 3.72   2022-02-24
        * Advances in amsmath (lua).
        * Fixes:
diff --git a/Master/texmf-dist/doc/latex/babel/babel.pdf b/Master/texmf-dist/doc/latex/babel/babel.pdf
index 7c8f5bcc227..c51f53a46d7 100644
--- a/Master/texmf-dist/doc/latex/babel/babel.pdf
+++ b/Master/texmf-dist/doc/latex/babel/babel.pdf
diff --git a/Master/texmf-dist/source/latex/babel/babel.dtx b/Master/texmf-dist/source/latex/babel/babel.dtx
index b8b3ce531d6..45b916160fe 100644
--- a/Master/texmf-dist/source/latex/babel/babel.dtx
+++ b/Master/texmf-dist/source/latex/babel/babel.dtx
@@ -32,7 +32,7 @@
 %
 % \iffalse
 %<*filedriver>
-\ProvidesFile{babel.dtx}[2022/02/24 v3.72 The Babel package]
+\ProvidesFile{babel.dtx}[2022/02/26 v3.73 The Babel package]
 \documentclass{ltxdoc}
 \GetFileInfo{babel.dtx}
 \usepackage{fontspec}
@@ -3025,7 +3025,8 @@ parenthesis).
 \New{3.9a} Sets hyphenation exceptions for the languages given
 or, without the optional argument, for \textit{all} languages (eg,
 proper nouns or common loan words, and of course monolingual
-documents). Language exceptions take precedence over global ones.
+documents). Multiple declarations work much like |\hyphenation| (last
+wins), but language exceptions take precedence over global ones.
 
 It can be used only in the preamble, and exceptions are set when the
 language is first selected, thus taking into account changes of
@@ -5103,8 +5104,8 @@ help from Bernd Raichle, for which I am grateful.
 % \section{Tools}
 %
 %    \begin{macrocode}
-%<<version=3.72>>
-%<<date=2022/02/24>>
+%<<version=3.73>>
+%<<date=2022/02/26>>
 %    \end{macrocode}
 %
 % \textbf{Do not use the following macros in \texttt{ldf} files. They
@@ -14605,7 +14606,8 @@ end
         \AddToHook{env/align*/begin}{\bbl@ams@preset\bbl@ams@lap}%
         \AddToHook{env/eqnalign/begin}{\bbl@ams@preset\hbox}%
         % Hackish, for proper alignment. Don’t ask me why it works!:
-        \AddToHook{env/align*/end}{\iftag@\else\tag*{}\fi}%
+        \bbl@exp{% Avoid a 'visible' conditional
+          \\\AddToHook{env/align*/end}{\<iftag@>\<else>\\\tag*{}\<fi>}}%
         \AddToHook{env/flalign/begin}{\bbl@ams@preset\hbox}%
         \AddToHook{env/split/before}{%
           \ifnum\bbl@thetextdir>\z@
@@ -14619,7 +14621,8 @@ end
                \fi}%
              {}%
           \fi}%
-      \fi}
+      \fi
+    \fi}
 \fi
 \ifx\bbl@opt@layout\@nnil\endinput\fi  % if no layout
 \ifnum\bbl@bidimode>\z@
diff --git a/Master/texmf-dist/source/latex/babel/babel.ins b/Master/texmf-dist/source/latex/babel/babel.ins
index 2cebaab0c78..0cc5c549778 100644
--- a/Master/texmf-dist/source/latex/babel/babel.ins
+++ b/Master/texmf-dist/source/latex/babel/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{2022/02/24}
+\def\filedate{2022/02/26}
 \def\batchfile{babel.ins}
 \input docstrip.tex
 
diff --git a/Master/texmf-dist/source/latex/babel/bbcompat.dtx b/Master/texmf-dist/source/latex/babel/bbcompat.dtx
index 68066c48a93..763031c7f8f 100644
--- a/Master/texmf-dist/source/latex/babel/bbcompat.dtx
+++ b/Master/texmf-dist/source/latex/babel/bbcompat.dtx
@@ -30,7 +30,7 @@
 %
 % \iffalse
 %<*dtx>
-\ProvidesFile{bbcompat.dtx}[2022/02/24 v3.72]
+\ProvidesFile{bbcompat.dtx}[2022/02/26 v3.73]
 %</dtx>
 %
 %% File 'bbcompat.dtx'
diff --git a/Master/texmf-dist/source/latex/babel/locale.zip b/Master/texmf-dist/source/latex/babel/locale.zip
index 4f3acb39abf..965f5935d99 100644
--- a/Master/texmf-dist/source/latex/babel/locale.zip
+++ b/Master/texmf-dist/source/latex/babel/locale.zip
diff --git a/Master/texmf-dist/tex/generic/babel/babel.def b/Master/texmf-dist/tex/generic/babel/babel.def
index 32fefbdc2ef..d36d26395b3 100644
--- a/Master/texmf-dist/tex/generic/babel/babel.def
+++ b/Master/texmf-dist/tex/generic/babel/babel.def
@@ -40,7 +40,7 @@
     \wlog{File: #1 #4 #3 <#2>}%
     \let\ProvidesFile\@undefined}
 \fi
-\ProvidesFile{babel.def}[2022/02/24 3.72 Babel common definitions]
+\ProvidesFile{babel.def}[2022/02/26 3.73 Babel common definitions]
 \ifx\AtBeginDocument\@undefined  % TODO. change test.
   \def\@empty{}
 \def\loadlocalcfg#1{%
@@ -406,8 +406,8 @@
 \expandafter\newif\csname ifbbl@single\endcsname
 \chardef\bbl@bidimode\z@
 \fi
-\def\bbl@version{3.72}
-\def\bbl@date{2022/02/24}
+\def\bbl@version{3.73}
+\def\bbl@date{2022/02/26}
 \ifx\language\@undefined
   \csname newcount\endcsname\language
 \fi
diff --git a/Master/texmf-dist/tex/generic/babel/babel.sty b/Master/texmf-dist/tex/generic/babel/babel.sty
index da65d33d5ad..87ca08bbc74 100644
--- a/Master/texmf-dist/tex/generic/babel/babel.sty
+++ b/Master/texmf-dist/tex/generic/babel/babel.sty
@@ -34,7 +34,7 @@
 %%
 
 \NeedsTeXFormat{LaTeX2e}[2005/12/01]
-\ProvidesPackage{babel}[2022/02/24 3.72 The Babel package]
+\ProvidesPackage{babel}[2022/02/26 3.73 The Babel package]
 \@ifpackagewith{babel}{debug}
   {\providecommand\bbl@trace[1]{\message{^^J[ #1 ]}}%
    \let\bbl@debug\@firstofone
@@ -453,8 +453,8 @@
       \expandafter\@secondoftwo
     \fi}
 \fi
-\def\bbl@version{3.72}
-\def\bbl@date{2022/02/24}
+\def\bbl@version{3.73}
+\def\bbl@date{2022/02/26}
 \ifx\language\@undefined
   \csname newcount\endcsname\language
 \fi
diff --git a/Master/texmf-dist/tex/generic/babel/hyphen.cfg b/Master/texmf-dist/tex/generic/babel/hyphen.cfg
index 4a4d3c113cf..757202584f7 100644
--- a/Master/texmf-dist/tex/generic/babel/hyphen.cfg
+++ b/Master/texmf-dist/tex/generic/babel/hyphen.cfg
@@ -38,10 +38,10 @@
     \wlog{File: #1 #4 #3 <#2>}%
     \let\ProvidesFile\@undefined}
 \fi
-\ProvidesFile{hyphen.cfg}[2022/02/24 3.72 Babel hyphens]
+\ProvidesFile{hyphen.cfg}[2022/02/26 3.73 Babel hyphens]
 \xdef\bbl@format{\jobname}
-\def\bbl@version{3.72}
-\def\bbl@date{2022/02/24}
+\def\bbl@version{3.73}
+\def\bbl@date{2022/02/26}
 \ifx\AtBeginDocument\@undefined
   \def\@empty{}
 \fi
diff --git a/Master/texmf-dist/tex/generic/babel/luababel.def b/Master/texmf-dist/tex/generic/babel/luababel.def
index 15be747ccc1..f0682627191 100644
--- a/Master/texmf-dist/tex/generic/babel/luababel.def
+++ b/Master/texmf-dist/tex/generic/babel/luababel.def
@@ -1437,7 +1437,8 @@ end
         \AddToHook{env/align*/begin}{\bbl@ams@preset\bbl@ams@lap}%
         \AddToHook{env/eqnalign/begin}{\bbl@ams@preset\hbox}%
         % Hackish, for proper alignment. Don’t ask me why it works!:
-        \AddToHook{env/align*/end}{\iftag@\else\tag*{}\fi}%
+        \bbl@exp{% Avoid a 'visible' conditional
+          \\\AddToHook{env/align*/end}{\<iftag@>\<else>\\\tag*{}\<fi>}}%
         \AddToHook{env/flalign/begin}{\bbl@ams@preset\hbox}%
         \AddToHook{env/split/before}{%
           \ifnum\bbl@thetextdir>\z@
@@ -1451,7 +1452,8 @@ end
                \fi}%
              {}%
           \fi}%
-      \fi}
+      \fi
+    \fi}
 \fi
 \ifx\bbl@opt@layout\@nnil\endinput\fi  % if no layout
 \ifnum\bbl@bidimode>\z@
diff --git a/Master/texmf-dist/tex/generic/babel/nil.ldf b/Master/texmf-dist/tex/generic/babel/nil.ldf
index 25006ce03d6..d93c2127b24 100644
--- a/Master/texmf-dist/tex/generic/babel/nil.ldf
+++ b/Master/texmf-dist/tex/generic/babel/nil.ldf
@@ -33,7 +33,7 @@
 %% extension |.ins|) which are part of the distribution.
 %%
 
-\ProvidesLanguage{nil}[2022/02/24 3.72 Nil language]
+\ProvidesLanguage{nil}[2022/02/26 3.73 Nil language]
 \LdfInit{nil}{datenil}
 \ifx\l@nil\@undefined
   \newlanguage\l@nil