greek-fontenc (17aug23)

git-svn-id: svn://tug.org/texlive/trunk@67956 c570f23f-e606-0410-a88d-b1316a301751

5 files changed, 213 insertions, 72 deletions

diff --git a/Master/texmf-dist/tex/latex/greek-fontenc/greek-fontenc.def b/Master/texmf-dist/tex/latex/greek-fontenc/greek-fontenc.def
index 23f21a93724..b9a89af3e43 100644
--- a/Master/texmf-dist/tex/latex/greek-fontenc/greek-fontenc.def
+++ b/Master/texmf-dist/tex/latex/greek-fontenc/greek-fontenc.def
@@ -4,7 +4,7 @@
 % Common Greek font encoding definitions
 % ======================================
 %
-% :Version: 2.3 (changelog_)
+% :Version: 2.4 (changelog_)
 %
 % :Copyright: © 2013 -- 2023 Günter Milde
 %
@@ -31,7 +31,7 @@
 % ::
 
 \ProvidesFile{greek-fontenc.def}
-  [2023-06-01 2.3 Common Greek font encoding definitions]
+  [2023-08-15 2.4 Common Greek font encoding definitions]
 
 % ensuregreek, greekscript
 % ~~~~~~~~~~~~~~~~~~~~~~~~
@@ -60,7 +60,7 @@
 % ~~~~~~~
 %
 % Aliases are defined via `DeclareTextCommand` so that up/downcasing works
-% without the need for additional uclclist_ entries.
+% without the need for additional @uclclist_ entries.
 %
 %
 % Names matching mathematical variant symbols::
@@ -141,11 +141,11 @@
 %
 % .. code:: latex
 %
-%   \accdialyticavaria\textalpha,
-%   \accdialytica\accvaria\textalpha,
-%   \"\'\textalpha,
-%   \"'\textalpha, or
-%   \'"\textalpha.
+%   \accdialytikatonos\textupsilon,
+%   \accdialytika\acctonos\textupsilon,
+%   \"\'\textupsilon,
+%   \"'\textupsilon, or
+%   \'"\textupsilon.
 %
 % Separate definitions for the supported variants of the second input token
 % are required as composition is based on the non-expanded input
@@ -246,7 +246,49 @@
 \DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\accperispomeni}{\accdasiaperispomeni}
 \DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\~}{\accdasiaperispomeni}
 
-% .. _uclclist:
+% Also define the combinations with "capital" accent macros::
+
+\providecommand\IfFormatAtLeastTF{\@ifl@t@r\fmtversion} % new in 2020
+\IfFormatAtLeastTF{2022/06/01}{
+  \ProvideTextCommand{\accACUTE}{\LastDeclaredEncoding}{\@tabacckludge '}
+  \DeclareTextCompositeCommand{\accACUTE}{\LastDeclaredEncoding}{"}{\accdialytika}
+  \DeclareTextCompositeCommand{\accACUTE}{\LastDeclaredEncoding}{<}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\accACUTE}{\LastDeclaredEncoding}{>}{\LGR@hiatus}
+  \DeclareTextCompositeCommand{\accACUTE}{\LastDeclaredEncoding}{\accDIAERESIS}{\accdialytika}
+  \DeclareTextCompositeCommand{\accACUTE}{\LastDeclaredEncoding}{\LGR@hiatus}{\LGR@hiatus}
+  \DeclareTextCompositeCommand{\accACUTE}{\LastDeclaredEncoding}{\LGR@accdropped}{\LGR@accdropped}
+
+  \ProvideTextCommand{\accGRAVE}{\LastDeclaredEncoding}{\@tabacckludge`}
+  \DeclareTextCompositeCommand{\accGRAVE}{\LastDeclaredEncoding}{"}{\accdialytika}
+  \DeclareTextCompositeCommand{\accGRAVE}{\LastDeclaredEncoding}{<}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\accGRAVE}{\LastDeclaredEncoding}{>}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\accGRAVE}{\LastDeclaredEncoding}{\accDIAERESIS}{\accdialytika}
+  \DeclareTextCompositeCommand{\accGRAVE}{\LastDeclaredEncoding}{\LGR@hiatus}{\LGR@hiatus}
+  \DeclareTextCompositeCommand{\accGRAVE}{\LastDeclaredEncoding}{\LGR@accdropped}{\LGR@accdropped}
+
+  \ProvideTextCommand{\accTILDE}{\LastDeclaredEncoding}{\@tabacckludge~}
+  \DeclareTextCompositeCommand{\accTILDE}{\LastDeclaredEncoding}{"}{\accdialytika}
+  \DeclareTextCompositeCommand{\accTILDE}{\LastDeclaredEncoding}{\accDIAERESIS}{\accdialytika}
+  \DeclareTextCompositeCommand{\accTILDE}{\LastDeclaredEncoding}{>}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\accTILDE}{\LastDeclaredEncoding}{<}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\accTILDE}{\LastDeclaredEncoding}{\LGR@hiatus}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\accTILDE}{\LastDeclaredEncoding}{\LGR@accdropped}{\LGR@accdropped}
+
+  \ProvideTextCommand{\accDIAERESIS}{\LastDeclaredEncoding}{\@tabacckludge"}
+  \DeclareTextCompositeCommand{\accDIAERESIS}{\LastDeclaredEncoding}{'}{\accdialytika}
+  \DeclareTextCompositeCommand{\accDIAERESIS}{\LastDeclaredEncoding}{`}{\accdialytika}
+  \DeclareTextCompositeCommand{\accDIAERESIS}{\LastDeclaredEncoding}{~}{\accdialytika}
+  \DeclareTextCompositeCommand{\accDIAERESIS}{\LastDeclaredEncoding}{\accACUTE}{\accdialytika}
+  \DeclareTextCompositeCommand{\accDIAERESIS}{\LastDeclaredEncoding}{\accGRAVE}{\accdialytika}
+  \DeclareTextCompositeCommand{\accDIAERESIS}{\LastDeclaredEncoding}{\accTILDE}{\accdialytika}
+
+  \ProvideTextCommand{\LGR@accdropped}{\LastDeclaredEncoding}{\@firstofone}
+  \DeclareTextCompositeCommand{\LGR@accdropped}{\LastDeclaredEncoding}{'}{\LGR@accdropped}
+  \DeclareTextCompositeCommand{\LGR@accdropped}{\LastDeclaredEncoding}{`}{\LGR@accdropped}
+}{} % else do nothing
+
+
+% .. _@uclclist:
 %
 % Case changing
 % ~~~~~~~~~~~~~
@@ -285,7 +327,10 @@
 %
 % The definition of an auxiliary, self-resetting macro makes this idempotent
 % (only the first use of this function will expand the ``@uclclist``).
-% The second and third lines are TeX' way of writing ``uclclist += …``
+% The second and third lines are TeX' way of writing ``@uclclist += …``
+%
+% The new ``\MakeUppercase`` expects the default for ambiguous mappings
+% in first position, the old in last position.
 %
 % The ``\LGR@…`` auxiliary macros are defined below.
 % ::
@@ -340,9 +385,10 @@
     \textrho        \textRho
     \textvarrho        \textRho
     \textrhosymbol     \textRho
+    \textautosigma  \textSigma
     \textfinalsigma \textSigma
+    \textvarsigma   \textSigma
     \textsigma      \textSigma
-    \textautosigma  \textSigma
     \texttau        \textTau
     \textupsilon    \textUpsilon
     \textphi        \textPhi
@@ -357,20 +403,33 @@
     \textstigma     \textStigma
     \textsampi      \textSampi
     \textdigamma    \textDigamma
+    % Repeat default for ambiguous mappings for pre-2022 MakeUppercase:
+    \textbeta       \textBeta
+    \texttheta      \textTheta
+    \textkappa      \textKappa
+    \textpi         \textPi
+    \textrho        \textRho
+    \textautosigma  \textSigma
   }%
   \let\update@uclc@with@greek\relax
 }
 
-% Expand the uclc list using the just defined macro::
+% Expand the @uclclist using the just defined macro::
 
 \update@uclc@with@greek
 
 % Substitution macros
 % """""""""""""""""""
 %
-% Drop diacritics (The argument passing ensures that kerning is preserved) ::
+% Drop diacritics.
+% The argument passing ensures that kerning is preserved and allows
+% definition of CompositeCommands (cf. [fntguide]_)
+% Composite definitions with the tilde prevent errors in monotonic Greek
+% where the character ``~`` maps to a no-break space.
+% ::
 
 \DeclareTextCommand{\LGR@accdropped}{\LastDeclaredEncoding}[1]{#1}
+\DeclareTextCompositeCommand{\LGR@accdropped}{\LastDeclaredEncoding}{~}{\LGR@accdropped}
 
 % Keep dialytika: Define a dummy alias so that downcasing with
 % ``\MakeLowercase`` does not convert a simple dialytika to a composite
@@ -392,22 +451,36 @@
 
 \DeclareTextCommand{\LGR@Stigma}{\LastDeclaredEncoding}{\textStigma}
 
-% Mark hiatus
-% """""""""""
+
+% Hiatus
+% """"""
+%
+% Tonos and psili mark a hiatus if placed on the first vowel of a diphthong
+% (ΑΙ, ΑΥ, ΕΙ). A dialytika must be placed on the second vowel if they are
+% dropped (άυλος → ΑΫΛΟΣ, μάινα → ΜΑΪΝΑ, κέικ → ΚΕΪΚ, ἀυπνία → ΑΫΠΝΙΑ).
+%
+% The `@uclclist extension`_ converts tonos, psili, and psili-oxia accents to
+% ``\LGR@hiatus``. They should be dropped (as well as the second character of
+% composite diacritics like ``\'<`` or ``\>~``).
 %
-% Tonos and dasia mark a hiatus if placed on the
-% first vowel of a diphthong (ΑΙ, ΑΥ, ΕΙ). A dialytika must be placed on the
-% second vowel if they are dropped (άυλος → ΑΫΛΟΣ, μάινα → ΜΑΪΝΑ, κέικ → ΚΕΪΚ,
-% ἀυπνία → ΑΫΠΝΙΑ)::
+% If the next character is an Alpha or Epsilon, we call commands that place
+% a dialytika on a subsequent Iota or Upsilon (defined in the font
+% encoding files).  The font encoding file must also handle the cases when
+% ``\LGR@hiatus`` is followed by literal characters for Alpha or Epsilon
+% (see lgrenc.def_) for an example).
+% ::
 
 \DeclareTextCommand{\LGR@hiatus}{\LastDeclaredEncoding}[1]{#1}
+\DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{'}{\LGR@hiatus}
+\DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{`}{\LGR@accdropped}
+\DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{~}{\LGR@hiatus}
 \DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{>}{\LGR@hiatus}
 \DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{<}{\LGR@accdropped}
 \DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{\textAlpha}{\LGR@A@hiatus}
 \DeclareTextCompositeCommand{\LGR@hiatus}{\LastDeclaredEncoding}{\textEpsilon}{\LGR@E@hiatus}
 
-% The font encoding file must define the ``\LGR@hiatus`` TextCommand. See
-% ``lgrenc.def`` for an example.
+% Test next character
+% """""""""""""""""""
 %
 % The following macro can be used to test if the next character is an Alpha or
 % Epsilon. As ``\@ifnextchar`` gobbles spaces the lookahead macro definition
@@ -415,7 +488,6 @@
 %
 % This macro is a variant of LaTeX’s ``\@ifnextchar``, macro
 % that does not skip over spaces.
-%
 % ::
 
 \providecommand*{\LGR@ifnextchar}[3]{%
@@ -439,19 +511,23 @@
 % 0.11   2013-11-28    ``\greekscript`` TextCommand
 % 0.12   2014-12-12    Remove symbol macros for breathing accents.
 % 0.13   2015-08-04    No @uclclist entry for ypogegrammeni/prosgegrammeni.
-% 0.13.4 2019-07-10    ``@uclclist`` entry for ``\prosgegrammeni``.
+% 0.13.4 2019-07-10    @uclclist entry for ``\prosgegrammeni``.
 % 1.0    2020-09-25    ``\textKoppagreek`` and ``\textstigmagreek`` aliases.
 % 2.0    2020/10/30    Alias definitions matching mathematical variant symbols.
 % 2.2    2023-02-28    Add missing accent composite commands.
-% 2.2.1  2023-03-08    ``@uclclist`` entry for ``\accoxia``, prevent
+% 2.2.1  2023-03-08    @uclclist entry for ``\accoxia``, prevent
 %                      downcasing ``\textStigma`` to ``\textvarstigma``.
-% 2.3    2023-06-01    ``@uclclist`` entries for symbol variants.
+% 2.3    2023-06-01    @uclclist entries for symbol variants.
+% 2.4    2023-08-15    Fix @uclclist_ for ambiguous mappings.
+% ..                   Composite commands for "captital" macros and ``~``.
 % ====== ============  ========================================================
 %
 %
 % References
 % ----------
 %
+% .. [fntguide] LaTeX3 Project Team, `LaTeX2ε font selection`.
+%    https://mirrors.ctan.org/macros/latex/base/fntguide.pdf
 % .. [Haralambous-98] Yannis Haralambous
 %    `From Unicode to Typography, a Case Study: the Greek Script`, 1998.
 %    https://hal.science/hal-02101618
@@ -466,7 +542,6 @@
 % .. _athnum: https://ctan.org/pkg/athnum
 % .. _Babel: https://ctan.org/pkg/babel
 % .. _babel patch: http://www.eutypon.gr/eutypon/pdf/e2008-20/e20-a03.pdf
-% .. _fntguide: https://mirrors.ctan.org/macros/latex/base/fntguide.pdf
 % .. _fontenc:  https://ctan.org/pkg/fontenc
 % .. _hyperref: https://ctan.org/pkg/hyperref
 % .. _ibycus: https://ctan.org/pkg/ibycus-babel
@@ -478,6 +553,3 @@
 % .. _textalpha: textalpha.sty.html
 % .. _tuenc-greek.def: tuenc-greek.def.html
 % .. _ucs: https://ctan.org/pkg/unicode
-%
-%
-%
diff --git a/Master/texmf-dist/tex/latex/greek-fontenc/lgrenc.def b/Master/texmf-dist/tex/latex/greek-fontenc/lgrenc.def
index 0d7ae1c7058..8ff80d1d1bd 100644
--- a/Master/texmf-dist/tex/latex/greek-fontenc/lgrenc.def
+++ b/Master/texmf-dist/tex/latex/greek-fontenc/lgrenc.def
@@ -60,7 +60,9 @@
 % 2.1    2022-06-14    Support the correct spelling ``\guillemet…`` for « ».
 % 2.2    2023-02-28    Fix character used for ano ``\textanoteleia`` and
 %                      ``\textperiodcentered``.
-% 2.2.1  2023-06-01    Fix Unicode errors with "new" ``\MakeUppercase``.
+% 2.3    2023-06-01    Fix Unicode errors with "new" ``\MakeUppercase``.
+% 2.4    2023-08-15    Add LGR-specific definitions for "capital" accent
+%                      for the ``\MakeUppercase`` fix in babel-greek_.
 % ====== ============  ========================================================
 %
 % Usage
@@ -100,7 +102,7 @@
 % ::
 
 \ProvidesFile{lgrenc.def}
-[2023/02/28 2.2 LGR Greek font encoding definitions]
+[2023-08-15 2.4 LGR Greek font encoding definitions]
 % Copyright © 2010 -- 2023 Günter Milde
 % This file is part of the "greek-fontenc" package.
 % It may be distributed and/or modified under the
@@ -472,8 +474,8 @@
 \DeclareTextAccent{\u}{LGR}{30}               % BREVE (Greek vrachy)
 \DeclareTextAccent{\=}{LGR}{31}               % MACRON
 
-% Aliases
-% """""""
+% Symbol Macros
+% """""""""""""
 %
 % The standard _`symbol macros` are exclusively used for Greek diacritics
 % in LGR::
@@ -483,6 +485,15 @@
 \DeclareTextCommand{\`}{LGR}{\accvaria}
 \DeclareTextCommand{\~}{LGR}{\accperispomeni}
 
+% The ``\uclclist`` extension in `babel-greek`_ converts standard symbol
+% macros to "capital accents". In Greek typographic tradition they are
+% dropped::
+
+\ProvideTextCommand{\accACUTE}{LGR}{\LGR@hiatus}
+\ProvideTextCommand{\accGRAVE}{LGR}{\@firstofone}
+\ProvideTextCommand{\accTILDE}{LGR}{\@firstofone}
+
+
 % Common Greek font encoding definitions
 % ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 %
@@ -857,7 +868,7 @@
 %
 % The default \MakeUppercase (2022-version) emits "composing" Unicode in
 % characters for letters with diacriticals but no matching pre-composed
-% capital equivalent. The fix requires a LaTeX version >= 37 (2023)::
+% capital equivalent. The fix requires a LaTeX version 2023 or later::
 
 \ifdefined\DeclareUppercaseMapping
   \DeclareUppercaseMapping{"0390}{\accdialytikatonos{\textiota}}          % ΐ
diff --git a/Master/texmf-dist/tex/latex/greek-fontenc/puenc-greek.def b/Master/texmf-dist/tex/latex/greek-fontenc/puenc-greek.def
index 915725fdbf8..920b49ab53f 100644
--- a/Master/texmf-dist/tex/latex/greek-fontenc/puenc-greek.def
+++ b/Master/texmf-dist/tex/latex/greek-fontenc/puenc-greek.def
@@ -23,6 +23,7 @@
 %   2.0    2020-10-18  Initial version.
 %   2.2    2023-02-28  Add compatibility definitions for hyperref.
 %   2.2.1  2023-03-08  Documentation update.
+%   2.4    2023-08-15  Print σ, not ς with ``textautosigma`` dummy definition.
 %   ====== =========== =======================================================
 %
 % .. contents::
@@ -33,7 +34,7 @@
 % ::
 
 \ProvidesFile{puenc-greek.def}
-  [2023/03/08 2.2.1 Greek LICRs for PDF strings]
+  [2023-08-15 2.4 Greek LICRs for PDF strings]
 
 
 % Diacritics
@@ -221,10 +222,10 @@
 \DeclareTextCommand{\textepsilonsymbol}{PU}{\83\365} % ϵ "03F5
 \DeclareTextCommand{\textbackepsilon}{PU}{\83\366} % ϶ "03F6 # not in LGR
 
-% ``\textautosigma`` is lowercase of \textSigma
-% (since 2022/06, ``\MakeLowercase`` use a context-sensitive sigma) ::
+% Dummy definition (\textautosigma is lowercase of \textSigma)
+% TODO: Fix implementation of \autosigma ::
 
-\ProvideTextCommand{\textautosigma}{PU}{\MakeLowercase{\textSigma}}
+\ProvideTextCommand{\textautosigma}{PU}{\textsigma} % σ
 
 
 % Greek Extended
diff --git a/Master/texmf-dist/tex/latex/greek-fontenc/textalpha.sty b/Master/texmf-dist/tex/latex/greek-fontenc/textalpha.sty
index 20e40bec2b5..7f09a4469d2 100644
--- a/Master/texmf-dist/tex/latex/greek-fontenc/textalpha.sty
+++ b/Master/texmf-dist/tex/latex/greek-fontenc/textalpha.sty
@@ -3,7 +3,7 @@
 % Greek symbols in text
 % *********************
 %
-% :Version:   2.2.2 (changelog_)
+% :Version:   2.4 (changelog_)
 %
 % :Copyright: © 2010, 2023 Günter Milde
 %
@@ -11,8 +11,7 @@
 %             conditions of the `LaTeX Project Public License`_, either
 %             version 1.3 of this license or any later version.
 %
-% :Abstract:  Provide a set of ``\text*`` macros for Greek characters
-%             in text mode.
+% :Abstract:  Provide a set of LICR macros for Greek characters in text mode.
 %
 %
 % .. contents::
@@ -33,7 +32,7 @@
 %   definitions.
 %
 % * Otherwise, the `LGR font encoding`_ is set as `default font encoding`
-%   (cf. fntguide_ section 5.3) for Greek.
+%   (cf. [fntguide]_ section 5.3) for Greek.
 %
 % Advantages:
 %
@@ -63,7 +62,7 @@
 %    Therefore, Greek text should be written with the help of babel_ or
 %    polyglossia_ (setting the language to ``greek``) or wrapped in the
 %    provided ``ensuregreek`` macro.  Using babel_ or polyglossia_ also helps
-%    to ensure correct hyphenation of Greek text.
+%    to ensure correct hyphenation and upcasing of Greek text.
 %
 %
 % Usage
@@ -91,9 +90,13 @@
 % To give ``textalpha.sty`` a chance of finding out which `font encodings`_
 % are used, load it after fontspec_ and/or fontenc_.
 %
+% Documentation
+% =============
 %
+% A HTML rendering of the literal source is available as
+% `<textalpha.sty.html>`_ (you may be reading it just now).
 %
-% For detailled examples see `<textalpha-doc.tex>`_ and `<textalpha-doc.pdf>`_
+% For detailed examples see `<textalpha-doc.tex>`_ and `<textalpha-doc.pdf>`_
 % (8-bit TeX and XeTeX/LuaTeX in 8-bit compatibility mode) as well as
 % `<test-tuenc-greek.tex>`_ and `<test-tuenc-greek.pdf>`_ (XeTeX/LuaTeX with
 % Unicode fonts).
@@ -110,8 +113,7 @@
 % ::
 
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{textalpha}
-  [2023-03-17 2.2.2 macros for Greek letters in text]
+\ProvidesPackage{textalpha}[2023-08-15 2.4 macros for Greek letters in text]
 
 
 % Options
@@ -189,8 +191,22 @@
   \DeclareTextCompositeCommand{\<}{#1}{'}{\accdasiaoxia}
   \DeclareTextCompositeCommand{\<}{#1}{`}{\accdasiavaria}
   \DeclareTextCompositeCommand{\<}{#1}{~}{\accdasiaperispomeni}
+
+% Also define "mixed" composites (required due to the fix for
+% ``\MakeUppercse`` below::
+
+  % \MakeUppercse: \>~a, \<~a
+  % \DeclareTextCompositeCommand{\accpsili}{#1}{~}{\accpsiliperispomeni}
+  % \DeclareTextCompositeCommand{\accdasia}{#1}{~}{\accdasiaperispomeni}
 }
 
+% Fix 2022 \MakeUppercase::
+
+\ifdefined\DeclareCaseChangeEquivalent % new in 2023
+  \DeclareCaseChangeEquivalent{\<}{\CaseSwitch{\<}{\LGR@accdropped}{\<}{\<}}
+  \DeclareCaseChangeEquivalent{\>}{\CaseSwitch{\>}{\LGR@hiatus}{\>}{\>}}
+\fi
+
 
 % .. _font encoding:
 %
@@ -213,14 +229,7 @@
 % .. _LGR font encoding: README.html#lgr
 %
 % Ensure a Greek-supporting font encoding exists and supports Greek LICR
-% macros:
-%
-% * Load the Greek LICR definitions for Unicode if the font encoding TU
-%   is detected.
-% * If none of TU or LGR is declared, load ``tuenc.def`` with
-%   Xe/LuaTeX and ``lgrenc.def`` else.
-%
-% ::
+% macros::
 
 \ifdefined \UnicodeEncodingName % set by LaTeX for Unicode-aware engines
   \input{tuenc-greek.def}
@@ -275,6 +284,12 @@
 \DeclareTextSymbol{\textmicro}{TS1}{181} % micro sign
 \DeclareTextSymbolDefault{\textmicro}{TS1}
 
+% Use it for the MICRO SIGN character::
+
+\ifdefined\DeclareUnicodeCharacter
+  \DeclareUnicodeCharacter{00B5}{\textmicro} % micro sign
+\fi
+
 
 % Default declarations
 % --------------------
@@ -586,6 +601,8 @@
 % 2.2    2023-02-28  Don't use ``\makeatother`` in ``\AtBeginDocument``.
 % 2.2.1  2023-03-08  Documentation update.
 % 2.2.2  2023-03-17  Don't map active `;` to ``\textsemicolon`` in math mode.
+% 2.4    2023-08-16  Map character 00B5 MICRO SIGN to ``\textmicro``.
+% ..                 Fix upcasing of Greek letters with ``\<`` and ``\>``.
 % ====== =========== ========================================================
 %
 %
diff --git a/Master/texmf-dist/tex/latex/greek-fontenc/tuenc-greek.def b/Master/texmf-dist/tex/latex/greek-fontenc/tuenc-greek.def
index fc91f22b49b..1a4c8875c57 100644
--- a/Master/texmf-dist/tex/latex/greek-fontenc/tuenc-greek.def
+++ b/Master/texmf-dist/tex/latex/greek-fontenc/tuenc-greek.def
@@ -3,7 +3,7 @@
 % Greek LICR definitions for XeTeX and LuaTeX
 % *******************************************
 %
-% :Version: 2.2.1 (changelog_)
+% :Version: 2.4 (changelog_)
 %
 % :Copyright: © 2013 -- 2023 Günter Milde
 %
@@ -51,7 +51,7 @@
 % ::
 
 \ProvidesFile{tuenc-greek.def}
-  [2023/03/08 2.2.1 Greek LICRs for XeTeX and LuaTeX]
+  [2023-08-15 2.4 Greek LICRs for XeTeX and LuaTeX]
 
 
 % Greek Diacritics
@@ -98,17 +98,17 @@
 % ``\DeclareUnicodeAccent`` does not work with more than one argument::
 
 % The COMBINING DIALYTIKA TONOS is discarded and not well supported by fonts:
-\DeclareTextCommand{\accdialytikatonos}{\UnicodeEncodingName}[1]{#1\char"0308\char"0301}
-\DeclareTextCommand{\accdialytikavaria}{\UnicodeEncodingName}[1]{#1\char"0308\char"0300}
-\DeclareTextCommand{\accdialytikaperispomeni}{\UnicodeEncodingName}[1]{#1\char"0308\char"0342}
+\DeclareTextCommand{\accdialytikatonos}{\UnicodeEncodingName}[1]{#1\char"0308\relax\char"0301\relax}
+\DeclareTextCommand{\accdialytikavaria}{\UnicodeEncodingName}[1]{#1\char"0308\relax\char"0300\relax}
+\DeclareTextCommand{\accdialytikaperispomeni}{\UnicodeEncodingName}[1]{#1\char"0308\relax\char"0342\relax}
 
-\DeclareTextCommand{\accdasiaoxia}{\UnicodeEncodingName}[1]{#1\char"0314\char"0301}
-\DeclareTextCommand{\accdasiavaria}{\UnicodeEncodingName}[1]{#1\char"0314\char"0300}
-\DeclareTextCommand{\accdasiaperispomeni}{\UnicodeEncodingName}[1]{#1\char"0314\char"0342}
+\DeclareTextCommand{\accdasiaoxia}{\UnicodeEncodingName}[1]{#1\char"0314\relax\char"0301\relax}
+\DeclareTextCommand{\accdasiavaria}{\UnicodeEncodingName}[1]{#1\char"0314\relax\char"0300\relax}
+\DeclareTextCommand{\accdasiaperispomeni}{\UnicodeEncodingName}[1]{#1\char"0314\relax\char"0342\relax}
 
-\DeclareTextCommand{\accpsilioxia}{\UnicodeEncodingName}[1]{#1\char"0313\char"0301}
-\DeclareTextCommand{\accpsilivaria}{\UnicodeEncodingName}[1]{#1\char"0313\char"0300}
-\DeclareTextCommand{\accpsiliperispomeni}{\UnicodeEncodingName}[1]{#1\char"0313\char"0342}
+\DeclareTextCommand{\accpsilioxia}{\UnicodeEncodingName}[1]{#1\char"0313\relax\char"0301\relax}
+\DeclareTextCommand{\accpsilivaria}{\UnicodeEncodingName}[1]{#1\char"0313\relax\char"0300\relax}
+\DeclareTextCommand{\accpsiliperispomeni}{\UnicodeEncodingName}[1]{#1\char"0313\relax\char"0342\relax}
 
 
 % Common Definitions
@@ -290,9 +290,11 @@
 \DeclareTextSymbol{\textbackepsilon  }\UnicodeEncodingName{"03F6} % ϶ not in LGR
 
 % Dummy definition (\textautosigma is lowercase of \textSigma)
-% TODO: implement autosigma for TU::
+% TODO: Fix implementation of autosigma for TU::
 
-\ProvideTextCommand{\textautosigma}{\UnicodeEncodingName}{\MakeLowercase{Σ}}
+\ProvideTextCommand{\textautosigma}\UnicodeEncodingName{\textsigma} % σ
+% The following definition always prints a final sigma :(
+% \ProvideTextCommand{\textautosigma}{\UnicodeEncodingName}{\MakeLowercase{Σ}}
 
 
 % Greek Extended
@@ -580,14 +582,52 @@
 %
 % Greek letters drop diacritics (eccept dialytika and sub-iota) in UPPERCASE.
 %
-% uc/lc values
-% ~~~~~~~~~~~~
+% Babel-Greek indroduces macros for "capital accents" in 1.13.3.
+% Here, we add definitions to drop diacritics in uppercase::
+
+\providecommand\IfFormatAtLeastTF{\@ifl@t@r\fmtversion} % new in 2020
+\IfFormatAtLeastTF{2022/06/01}{
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textAlpha  }{\LGR@A@hiatus}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textEpsilon}{\LGR@E@hiatus}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textEta    }{Η}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textIota   }{Ι}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textOmicron}{Ο}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textUpsilon}{Υ}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{\textOmega  }{Ω}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Α}{\LGR@A@hiatus}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Ε}{\LGR@E@hiatus}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Η}{Η}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Ι}{Ι}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Ο}{Ο}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Υ}{Υ}
+  \DeclareTextCompositeCommand{\accACUTE}{TU}{Ω}{Ω}
+
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textAlpha  }{Α}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textEpsilon}{Ε}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textEta    }{Η}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textIota   }{Ι}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textOmicron}{Ο}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textUpsilon}{Υ}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{\textOmega  }{Ω}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Α}{Α}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Ε}{Ε}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Η}{Η}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Ι}{Ι}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Ο}{Ο}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Υ}{Υ}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Ω}{Ω}
+  \DeclareTextCompositeCommand{\accGRAVE}{TU}{Ω}{Ω}
+
+  \DeclareTextCompositeCommand{\LGR@hiatus}{TU}{Α}{\LGR@A@hiatus}
+  \DeclareTextCompositeCommand{\LGR@hiatus}{TU}{Ε}{\LGR@E@hiatus}
+
+% The new (2022) implementation of ``\MakeUppercase`` drops accents from
+% literal Unicode input (if the text language is set to Greek with Babel).
 %
 % With the old ``\MakeUppercase`` implementation, we can fix this using
 % ``\lccode`` and ``\uccode`` corrections from the xgreek_ package by
 % Apostolos Syropoulos::
 
-\IfFormatAtLeastTF{2022/06/01}{
 }{% else
   \global\lccode"0370="0371 \global\uccode"0370="0370
   \global\lccode"0371="0371 \global\uccode"0371="0370
@@ -968,11 +1008,11 @@
 %                    in other encodings with `luainputenc`).
 % 2.2    2023-02-28  Add composite definitions for ``\~`` + literal char.
 % ..                 Fix order in expansion of combined accent macros.
-% ..                 Let ``\textautosigma`` select sigma/finalsigma
-%                    depending on context (with LaTeX >= 2022/06/01).
 % ..                 Skip `uccode` fixes when ignored by ``\MakeUppercase``.
 % ..                 Add ``\textbackepsilon`` (defined by hyperref for PU).
 % 2.2.1  2023-03-08  Documentation update.
+% 2.4    2023-08-15  Fix behaviour of composite diacritics.
+% ..                 Composite commands for "captital" macros.
 % ====== =========== ========================================================
 %
 %