% alphabeta.sty
% +++++++++++++
% Greek symbols in text and math
% ******************************
%
% :Version: 2.6 (changelog_)
%
% :Copyright: �� 2010, 2020, 2023 G��nter Milde
%
% :Licence: This work may be distributed and/or modified under the
% conditions of the `LaTeX Project Public License`_, either
% version��1.3 of this license or any later version.
%
% :Abstract: Use ``\alpha, \beta, ...`` for Greek letters in text and math
% mode.
%
%
% .. contents::
%
% Motivation
% ==========
%
% By default, the ``\alpha, \beta, ...`` macros for Greek letters
% are only valid in mathematical mode.
%
% With this package, the math macros are redefined to work in both, text and
% math mode, so that Greek letters can be specified with the established
% command names in text, too.
%
% The package works with both, 8-bit TeX as well as Xe/LuaTeX.
% Under 8-bit TeX, literal Unicode characters can be used for Greek symbols
% in mathematical formulas.
%
% .. Attention::
% The macros work well in any font encoding for single symbols.
% However, with 8-bit TeX, the automatic font-encoding switches behind the
% doors interfere with kerning between letters and replacement of
% accent+character with a pre-composed character.
%
% 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 and case changes.
%
%
% Usage
% =====
%
% .. code:: latex
%
% \usepackage[<options>]{alphabeta}
%
% The package provides the same options__ as textalpha_.
%
% __ textalpha.sty.html#options
%
% Conflicts
% ----------
%
% `alphabeta` does not work if the ``utf8x`` input encoding is selected.
% (``utf8x`` is an interface to the ``ucs`` package which uses a
% non-compatible definition of ``\DeclareUnicodeCharacter``.)
%
% For details see `<alphabeta-doc.tex>`_ and `<alphabeta-doc.pdf>`_.
%
%
% Implementation
% ==============
%
% Identification
% --------------
%
% ::
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{alphabeta}
[2023-11-16 2.6 macros for Greek letters in text and math]
% Requirements
% ------------
%
% This package extends the `textalpha <textalpha.sty.html>`_ package.
% (Just like `alphabeta`, `textalpha`_ is part of greek-fontenc_.)
% Package options are passed on to `textalpha`::
\RequirePackageWithOptions{textalpha}
% This package requires the e-TeX_ extensions (i.e. a not too old TeX
% distribution) for the ``\ifdefined`` test.
%
% It uses the ``\TextOrMath`` test (in the LaTeX kernel since 2015).
% In case of an ``\TextOrMath undefined`` error, load the
% ``fixltx2e`` package.
%
%
% Postpone the re-definitions
% ---------------------------
%
% To prevent other packages overwriting the re-defined commands we postpone
% the next steps until the start of the document body::
\AtBeginDocument{
% save @-catcode, allow @ in command names::
\edef\RestoreAtCatcode{\catcode`@=\the\catcode`@\relax}%
\makeatletter
% Save math macros
% ----------------
%
% Map the standard math commands to maths-specific names::
\let\mathGamma\Gamma
\let\mathDelta\Delta
\let\mathTheta\Theta
\let\mathLambda\Lambda
\let\mathXi\Xi
\let\mathPi\Pi
\let\mathSigma\Sigma
\let\mathUpsilon\Upsilon
\let\mathPhi\Phi
\let\mathPsi\Psi
\let\mathOmega\Omega
%
\let\mathalpha\alpha
\let\mathbeta\beta
\let\mathgamma\gamma
\let\mathdelta\delta
\let\mathepsilon\epsilon
\let\mathvarepsilon\varepsilon
\let\mathzeta\zeta
\let\matheta\eta
\let\maththeta\theta
\let\mathvartheta\vartheta
\let\mathiota\iota
\let\mathkappa\kappa
\let\mathlambda\lambda
\let\mathmu\mu
\let\mathnu\nu
\let\mathxi\xi
\let\mathpi\pi
\let\mathvarpi\varpi
\let\mathrho\rho
\let\mathvarrho\varrho
\let\mathsigma\sigma
\let\mathvarsigma\varsigma
\let\mathtau\tau
\let\mathupsilon\upsilon
\let\mathphi\phi
\let\mathvarphi\varphi
\let\mathchi\chi
\let\mathpsi\psi
\let\mathomega\omega
% ``\digamma`` is defined by amsmath, provide a fallback
\providecommand*{\digamma}{\textit{\textdigamma}}
\let\mathdigamma\digamma
% \varTheta, \varkappa, and \varbeta are defined by math packages
\ifdefined\varTheta
\let\mathvarTheta\varTheta
\fi
\ifdefined\varbeta
\let\mathvarbeta\varbeta
\fi
\ifdefined\varkappa % e.g. with newtxmath
\let\mathvarkappa\varkappa
\fi
% Commands to access Greek letters by name
% ----------------------------------------
%
% For letters defined in math mode, the commands work in both, text and math.
%
% Some Greek letters look identical to Latin letters and can therefore not be
% used as variable symbols in math formulas. These letters are not defined in
% TeX's math mode, we provide an alias to the corrsponding ``\text...``
% command.
%
% Mathematical notation distinguishes `variant shape symbols`_ for pi, phi,
% rho, theta (small and capital), beta, and kappa (characters for the latter
% three symbols are not included in TeX���s math fonts). These variations have
% no syntactic meaning in Greek text and are not given code-points in the LGR
% encoding while Unicode defines separate code points for the symbol variants.
%
% Greek Alphabet
% ''''''''''''''
%
% Macros keep their meaning in mathematical mode (i.e. use the same shape as
% without this package) and refer to GREEK LETTER ... in text. For
% ``\epsilon`` and ``phi``, this means that the selected symbol variant
% differs in text vs. math mode. Use ``\varepsilon`` and ``\varphi`` (see
% section `variant shape symbols`_ below) to select the "GREEK LETTER ..."
% in both, text and math mode.
%
% Macros for letters that can take diacritical marks and are used in text
% and math mode must be made robust to ensure the selection of pre-composed
% characters and correct case changes with ``\MakeUppercase`` and
% ``\MakeLowercase``. We use ``\DeclareRobustCommand`` because
% ``\renewrobustcmd`` from the etoolbox_ leads to errors in PDF-strings.
% ::
\providecommand*{\Alpha}{\textAlpha}
\providecommand*{\Beta}{\textBeta}
\renewcommand*{\Gamma}{\TextOrMath{\textGamma}{\mathGamma}}
\renewcommand*{\Delta}{\TextOrMath{\textDelta}{\mathDelta}}
\providecommand*{\Epsilon}{\textEpsilon}
\providecommand*{\Zeta}{\textZeta}
\providecommand*{\Eta}{\textEta}
\renewcommand*{\Theta}{\TextOrMath{\textTheta}{\mathTheta}}
\providecommand*{\Iota}{\textIota}
\providecommand*{\Kappa}{\textKappa}
\renewcommand*{\Lambda}{\TextOrMath{\textLambda}{\mathLambda}}
\providecommand*{\Mu}{\textMu}
\providecommand*{\Nu}{\textNu}
\renewcommand*{\Xi}{\TextOrMath{\textXi}{\mathXi}}
\providecommand*{\Omicron}{\textOmicron}
\renewcommand*{\Pi}{\TextOrMath{\textPi}{\mathPi}}
\providecommand*{\Rho}{\textRho}
\renewcommand*{\Sigma}{\TextOrMath{\textSigma}{\mathSigma}}
\providecommand*{\Tau}{\textTau}
\DeclareRobustCommand{\Upsilon}{\TextOrMath{\textUpsilon}{\mathUpsilon}}
\renewcommand*{\Phi}{\TextOrMath{\textPhi}{\mathPhi}}
\providecommand*{\Chi}{\textChi}
\renewcommand*{\Psi}{\TextOrMath{\textPsi}{\mathPsi}}
\DeclareRobustCommand{\Omega}{\TextOrMath{\textOmega}{\mathOmega}}
%
\DeclareRobustCommand{\alpha}{\TextOrMath{\textalpha}{\mathalpha}}
\renewcommand*{\beta}{\TextOrMath{\textbeta}{\mathbeta}}
\renewcommand*{\gamma}{\TextOrMath{\textgamma}{\mathgamma}}
\renewcommand*{\delta}{\TextOrMath{\textdelta}{\mathdelta}}
\DeclareRobustCommand{\epsilon}{\TextOrMath{\textepsilon}{\mathepsilon}} % ��/��
\renewcommand*{\zeta}{\TextOrMath{\textzeta}{\mathzeta}}
\DeclareRobustCommand{\eta}{\TextOrMath{\texteta}{\matheta}}
\renewcommand*{\theta}{\TextOrMath{\texttheta}{\maththeta}}
\DeclareRobustCommand{\iota}{\TextOrMath{\textiota}{\mathiota}}
\renewcommand*{\kappa}{\TextOrMath{\textkappa}{\mathkappa}}
\renewcommand*{\lambda}{\TextOrMath{\textlambda}{\mathlambda}}
\renewcommand*{\mu}{\TextOrMath{\textmu}{\mathmu}}
\renewcommand*{\nu}{\TextOrMath{\textnu}{\mathnu}}
\renewcommand*{\xi}{\TextOrMath{\textxi}{\mathxi}}
\providecommand*{\omicron}{\textomicron}
\renewcommand*{\pi}{\TextOrMath{\textpi}{\mathpi}}
\DeclareRobustCommand{\rho}{\TextOrMath{\textrho}{\mathrho}}
\renewcommand*{\sigma}{\TextOrMath{\textsigma}{\mathsigma}}
\providecommand*{\finalsigma}{\TextOrMath{\textfinalsigma}{\mathvarsigma}}
\renewcommand*{\varsigma}{\finalsigma}
\renewcommand*{\tau}{\TextOrMath{\texttau}{\mathtau}}
\DeclareRobustCommand{\upsilon}{\TextOrMath{\textupsilon}{\mathupsilon}}
\renewcommand*{\phi}{\TextOrMath{\textphi}{\mathphi}} % ��/��
\renewcommand*{\chi}{\TextOrMath{\textchi}{\mathchi}}
\renewcommand*{\psi}{\TextOrMath{\textpsi}{\mathpsi}}
\DeclareRobustCommand{\omega}{\TextOrMath{\textomega}{\mathomega}}
% Archaic letters
% '''''''''''''''
%
% ::
\renewcommand*{\digamma}{\TextOrMath{\textdigamma}{\mathdigamma}} % ��
\providecommand*{\Digamma}{\textDigamma} % ��
\providecommand*{\stigma}{\textstigma} % ��
\providecommand*{\varstigma}{\textvarstigma} % stigma variant (CB.enc, teubner)
\providecommand*{\koppa}{\textkoppa} % �� (greek small letter koppa)
\providecommand*{\Koppa}{\textKoppa} % �� (greek letter koppa)
% !! babel-greek defines \qoppa as alias for �� (\textkoppa)!
\def\qoppa{\textqoppa} % �� (archaic koppa)
\providecommand*{\Qoppa}{\textQoppa} % �� (archaic Koppa)
\providecommand*{\Stigma}{\textStigma} % �� (in some fonts ���� ligature)
\providecommand*{\Sampi}{\textSampi} % ��
\providecommand*{\sampi}{\textsampi} % ��
% Variant shape symbols
% '''''''''''''''''''''
%
% TeX���s concept of ���standard��� vs. ���variant��� math symbols does not map to the
% distinction between GREEK LETTER ... vs. GREEK ... SYMBOL in the Unicode
% standard (see `<test-tuenc-greek.pdf>`_).
%
% The ``\...symbol`` macros select the GREEK ... SYMBOL in both, text and
% math mode. For ``\epsilonsymbol`` and ``\phisymbol`` this is the default
% shape in math mode. The ``\var...`` macros select the shape used by TeX
% math (or, if not supported, the SYMBOL shape)::
% ..symbol == var..
\renewcommand*{\varpi}{\TextOrMath{\textpisymbol}{\mathvarpi}} % ��
\providecommand*{\pisymbol}{\varpi} % ��
\renewcommand*{\varrho}{\TextOrMath{\textrhosymbol}{\mathvarrho}} % ��
\providecommand*{\rhosymbol}{\TextOrMath{\textrhosymbol}{\mathvarrho}} % ��
\renewcommand*{\vartheta}{\TextOrMath{\textthetasymbol}{\mathvartheta}} % ��
\providecommand*{\thetasymbol}{\vartheta} % ��
% ..symbol != var..
\renewcommand*{\varepsilon}{\TextOrMath{\textepsilon}{\mathvarepsilon}} % ��
\providecommand*{\epsilonsymbol}{\TextOrMath{\textepsilonsymbol}{\mathepsilon}} % ��
\renewcommand*{\varphi}{\TextOrMath{\textphi}{\mathvarphi}} % ��
\providecommand*{\phisymbol}{\TextOrMath{\textphisymbol}{\mathphi}} % ��
% only text (in standard 8-bit TeX, may be defined with additional packages):
\ifdefined\mathvarbeta
\renewcommand*{\varbeta}{\TextOrMath{\textbetasymbol}{\mathvarbeta}} % ��
\else
\providecommand*{\varbeta}{\textbetasymbol}
\fi
\providecommand*{\betasymbol}{\varbeta}
\ifdefined\mathvarkappa % ��
\renewcommand*{\varkappa}{\TextOrMath{\textkappasymbol}{\mathvarkappa}}
\else
\providecommand*{\varkappa}{\textkappasymbol}
\fi
\providecommand*{\kappasymbol}{\varkappa}
% ..symbol != var.. (in "amsmath", \varTheta is italic shape of \Theta)
\ifdefined\mathvarTheta
\renewcommand*{\varTheta}{\TextOrMath{\textTheta}{\mathvarTheta}}
\else
\providecommand*{\varTheta}{\textTheta} % ��
\fi
\providecommand*{\Thetasymbol}{\textThetasymbol} % ��
% TextCompositeCommands for the letter-name macros
% ------------------------------------------------
%
% The NFSS TextComposite mechanism looks for the next token without expanding
% it. In order to let compositions like ``\ensuregreek{\'\Alpha}`` or
% ``\ensuregreek{\>"\alpha}`` work as expected we define TextComposites with
% the `letter name commands`.
%
% TextCompositeCommands are always specific for the font-encoding.
% Documents may use TU, LGR, and PU in parallel.
% We define auxiliary commands with definitions
% that are required by more than one font encoding.
%
%
% Select pre-composed characters.
% '''''''''''''''''''''''''''''''
%
% Required by LGR and PU.
%
% With TU, most pre-composed characters are selected by the the engine.
% (Actually by the `Harfbuzz` renderer which is default for XeTeX and can
% be selected with fontspec for LuaTeX). ::
\newcommand*{\alphabeta@select@precomposed}[1]{
\DeclareTextCompositeCommand{\accvaria }{#1}{\alpha }{\accvaria\textalpha}
\DeclareTextCompositeCommand{\accdasia }{#1}{\alpha }{\accdasia\textalpha}
\DeclareTextCompositeCommand{\accpsili }{#1}{\alpha }{\accpsili\textalpha}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\alpha }{\accdasiavaria\textalpha}
\DeclareTextCompositeCommand{\acctonos }{#1}{\alpha }{\acctonos\textalpha}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\alpha }{\accdasiaoxia\textalpha}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\alpha }{\accpsilioxia\textalpha}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\alpha }{\accpsilivaria\textalpha}
\DeclareTextCompositeCommand{\accperispomeni }{#1}{\alpha }{\accperispomeni\textalpha}
\DeclareTextCompositeCommand{\accdasiaperispomeni }{#1}{\alpha }{\accdasiaperispomeni\textalpha}
\DeclareTextCompositeCommand{\accpsiliperispomeni }{#1}{\alpha }{\accpsiliperispomeni\textalpha}
\DeclareTextCompositeCommand{\accvaria }{#1}{\eta }{\accvaria\texteta}
\DeclareTextCompositeCommand{\accdasia }{#1}{\eta }{\accdasia\texteta}
\DeclareTextCompositeCommand{\accpsili }{#1}{\eta }{\accpsili\texteta}
\DeclareTextCompositeCommand{\acctonos }{#1}{\eta }{\acctonos\texteta}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\eta }{\accdasiaoxia\texteta}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\eta }{\accpsilioxia\texteta}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\eta }{\accdasiavaria\texteta}
\DeclareTextCompositeCommand{\accperispomeni }{#1}{\eta }{\accperispomeni\texteta}
\DeclareTextCompositeCommand{\accdasiaperispomeni }{#1}{\eta }{\accdasiaperispomeni\texteta}
\DeclareTextCompositeCommand{\accpsiliperispomeni }{#1}{\eta }{\accpsiliperispomeni\texteta}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\eta }{\accpsilivaria\texteta}
\DeclareTextCompositeCommand{\accvaria }{#1}{\omega }{\accvaria\textomega}
\DeclareTextCompositeCommand{\accdasia }{#1}{\omega }{\accdasia\textomega}
\DeclareTextCompositeCommand{\accpsili }{#1}{\omega }{\accpsili\textomega}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\omega }{\accdasiavaria\textomega}
\DeclareTextCompositeCommand{\acctonos }{#1}{\omega }{\acctonos\textomega}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\omega }{\accdasiaoxia\textomega}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\omega }{\accpsilioxia\textomega}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\omega }{\accpsilivaria\textomega}
\DeclareTextCompositeCommand{\accperispomeni }{#1}{\omega }{\accperispomeni\textomega}
\DeclareTextCompositeCommand{\accdasiaperispomeni }{#1}{\omega }{\accdasiaperispomeni\textomega}
\DeclareTextCompositeCommand{\accpsiliperispomeni }{#1}{\omega }{\accpsiliperispomeni\textomega}
\DeclareTextCompositeCommand{\accvaria }{#1}{\iota }{\accvaria\textiota}
\DeclareTextCompositeCommand{\accdasia }{#1}{\iota }{\accdasia\textiota}
\DeclareTextCompositeCommand{\accpsili }{#1}{\iota }{\accpsili\textiota}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\iota }{\accdasiavaria\textiota}
\DeclareTextCompositeCommand{\acctonos }{#1}{\iota }{\acctonos\textiota}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\iota }{\accdasiaoxia\textiota}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\iota }{\accpsilioxia\textiota}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\iota }{\accpsilivaria\textiota}
\DeclareTextCompositeCommand{\accperispomeni }{#1}{\iota }{\accperispomeni\textiota}
\DeclareTextCompositeCommand{\accdasiaperispomeni }{#1}{\iota }{\accdasiaperispomeni\textiota}
\DeclareTextCompositeCommand{\accpsiliperispomeni }{#1}{\iota }{\accpsiliperispomeni\textiota}
\DeclareTextCompositeCommand{\accdialytika }{#1}{\iota }{\accdialytika\textiota}
\DeclareTextCompositeCommand{\accdialytikavaria }{#1}{\iota }{\accdialytikavaria\textiota}
\DeclareTextCompositeCommand{\accdialytikatonos }{#1}{\iota }{\accdialytikatonos\textiota}
\DeclareTextCompositeCommand{\accdialytikaperispomeni}{#1}{\iota }{\accdialytikaperispomeni\textiota}
\DeclareTextCompositeCommand{\accvaria }{#1}{\upsilon}{\accvaria\textupsilon}
\DeclareTextCompositeCommand{\accdasia }{#1}{\upsilon}{\accdasia\textupsilon}
\DeclareTextCompositeCommand{\accpsili }{#1}{\upsilon}{\accpsili\textupsilon}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\upsilon}{\accdasiavaria\textupsilon}
\DeclareTextCompositeCommand{\acctonos }{#1}{\upsilon}{\acctonos\textupsilon}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\upsilon}{\accdasiaoxia\textupsilon}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\upsilon}{\accpsilioxia\textupsilon}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\upsilon}{\accpsilivaria\textupsilon}
\DeclareTextCompositeCommand{\accperispomeni }{#1}{\upsilon}{\accperispomeni\textupsilon}
\DeclareTextCompositeCommand{\accdasiaperispomeni }{#1}{\upsilon}{\accdasiaperispomeni\textupsilon}
\DeclareTextCompositeCommand{\accpsiliperispomeni }{#1}{\upsilon}{\accpsiliperispomeni\textupsilon}
\DeclareTextCompositeCommand{\accdialytika }{#1}{\upsilon}{\accdialytika\textupsilon}
\DeclareTextCompositeCommand{\accdialytikavaria }{#1}{\upsilon}{\accdialytikavaria\textupsilon}
\DeclareTextCompositeCommand{\accdialytikatonos }{#1}{\upsilon}{\accdialytikatonos\textupsilon}
\DeclareTextCompositeCommand{\accdialytikaperispomeni}{#1}{\upsilon}{\accdialytikaperispomeni\textupsilon}
\DeclareTextCompositeCommand{\accvaria }{#1}{\epsilon}{\accvaria\textepsilon}
\DeclareTextCompositeCommand{\accdasia }{#1}{\epsilon}{\accdasia\textepsilon}
\DeclareTextCompositeCommand{\accpsili }{#1}{\epsilon}{\accpsili\textepsilon}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\epsilon}{\accdasiavaria\textepsilon}
\DeclareTextCompositeCommand{\acctonos }{#1}{\epsilon}{\acctonos\textepsilon}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\epsilon}{\accdasiaoxia\textepsilon}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\epsilon}{\accpsilioxia\textepsilon}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\epsilon}{\accpsilivaria\textepsilon}
\DeclareTextCompositeCommand{\accvaria }{#1}{\omicron}{\accvaria\textomicron}
\DeclareTextCompositeCommand{\accdasia }{#1}{\omicron}{\accdasia\textomicron}
\DeclareTextCompositeCommand{\accpsili }{#1}{\omicron}{\accpsili\textomicron}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\omicron}{\accdasiavaria\textomicron}
\DeclareTextCompositeCommand{\acctonos }{#1}{\omicron}{\acctonos\textomicron}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\omicron}{\accdasiaoxia\textomicron}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\omicron}{\accpsilioxia\textomicron}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\omicron}{\accpsilivaria\textomicron}
%
\DeclareTextCompositeCommand{\accdasia }{#1}{\Alpha }{\accdasia\textAlpha}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Alpha }{\accdasiavaria\textAlpha}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Alpha }{\accdasiaoxia\textAlpha}
\DeclareTextCompositeCommand{\accdasiaperispomeni}{#1}{\Alpha }{\accdasiaperispomeni\textAlpha}
\DeclareTextCompositeCommand{\accpsili }{#1}{\Alpha }{\accpsili\textAlpha}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\Alpha }{\accpsilivaria\textAlpha}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\Alpha }{\accpsilioxia\textAlpha}
\DeclareTextCompositeCommand{\accpsiliperispomeni}{#1}{\Alpha }{\accpsiliperispomeni\textAlpha}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Alpha }{\acctonos\textAlpha}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Alpha }{\accvaria\textAlpha}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Epsilon}{\accdasia\textEpsilon}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Epsilon}{\accdasiaoxia\textEpsilon}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Epsilon}{\accdasiavaria\textEpsilon}
\DeclareTextCompositeCommand{\accpsili }{#1}{\Epsilon}{\accpsili\textEpsilon}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\Epsilon}{\accpsilioxia\textEpsilon}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\Epsilon}{\accpsilivaria\textEpsilon}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Epsilon}{\acctonos\textEpsilon}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Epsilon}{\accvaria\textEpsilon}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Eta }{\accdasia\textEta}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Eta }{\accdasiavaria\textEta}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Eta }{\accdasiaoxia\textEta}
\DeclareTextCompositeCommand{\accdasiaperispomeni}{#1}{\Eta }{\accdasiaperispomeni\textEta}
\DeclareTextCompositeCommand{\accpsili }{#1}{\Eta }{\accpsili\textEta}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\Eta }{\accpsilivaria\textEta}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\Eta }{\accpsilioxia\textEta}
\DeclareTextCompositeCommand{\accpsiliperispomeni}{#1}{\Eta }{\accpsiliperispomeni\textEta}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Eta }{\acctonos\textEta}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Eta }{\accvaria\textEta}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Iota }{\accdasia\textIota}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Iota }{\accdasiavaria\textIota}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Iota }{\accdasiaoxia\textIota}
\DeclareTextCompositeCommand{\accdasiaperispomeni}{#1}{\Iota }{\accdasiaperispomeni\textIota}
\DeclareTextCompositeCommand{\accdialytika }{#1}{\Iota }{\accdialytika\textIota}
\DeclareTextCompositeCommand{\accpsili }{#1}{\Iota }{\accpsili\textIota}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\Iota }{\accpsilivaria\textIota}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\Iota }{\accpsilioxia\textIota}
\DeclareTextCompositeCommand{\accpsiliperispomeni}{#1}{\Iota }{\accpsiliperispomeni\textIota}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Iota }{\acctonos\textIota}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Iota }{\accvaria\textIota}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Omicron}{\accdasia\textOmicron}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Omicron}{\accdasiavaria\textOmicron}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Omicron}{\accdasiaoxia\textOmicron}
\DeclareTextCompositeCommand{\accpsili }{#1}{\Omicron}{\accpsili\textOmicron}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\Omicron}{\accpsilivaria\textOmicron}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\Omicron}{\accpsilioxia\textOmicron}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Omicron}{\acctonos\textOmicron}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Omicron}{\accvaria\textOmicron}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Upsilon}{\accdasia\textUpsilon}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Upsilon}{\accdasiavaria\textUpsilon}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Upsilon}{\accdasiaoxia\textUpsilon}
\DeclareTextCompositeCommand{\accdasiaperispomeni}{#1}{\Upsilon}{\accdasiaperispomeni\textUpsilon}
\DeclareTextCompositeCommand{\accdialytika }{#1}{\Upsilon}{\accdialytika\textUpsilon}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Upsilon}{\acctonos\textUpsilon}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Upsilon}{\accvaria\textUpsilon}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Rho }{\accdasia\textRho}
\DeclareTextCompositeCommand{\accdasia }{#1}{\Omega }{\accdasia\textOmega}
\DeclareTextCompositeCommand{\accdasiavaria }{#1}{\Omega }{\accdasiavaria\textOmega}
\DeclareTextCompositeCommand{\accdasiaoxia }{#1}{\Omega }{\accdasiaoxia\textOmega}
\DeclareTextCompositeCommand{\accdasiaperispomeni}{#1}{\Omega }{\accdasiaperispomeni\textOmega}
\DeclareTextCompositeCommand{\accpsili }{#1}{\Omega }{\accpsili\textOmega}
\DeclareTextCompositeCommand{\accpsilivaria }{#1}{\Omega }{\accpsilivaria\textOmega}
\DeclareTextCompositeCommand{\accpsilioxia }{#1}{\Omega }{\accpsilioxia\textOmega}
\DeclareTextCompositeCommand{\accpsiliperispomeni}{#1}{\Omega }{\accpsiliperispomeni\textOmega}
\DeclareTextCompositeCommand{\acctonos }{#1}{\Omega }{\acctonos\textOmega}
\DeclareTextCompositeCommand{\accvaria }{#1}{\Omega }{\accvaria\textOmega}
}
% Drop "capital" accents
% ''''''''''''''''''''''
%
% Definitions in babel-greek_ let ``\MakeUppercase`` convert standard accents
% ``\'``, ``\` ``, ``\~``, and ``\"`` to "capital" versions.
%
% In LGR, the "capital" accents are generally dropped. In PU and TU, they
% must be kept on Latin letters but dropped from Greek letters::
\newcommand*{\alphabeta@drop@capital@accents}[1]{
\DeclareTextCompositeCommand{\accACUTE}{#1}{\Alpha }{\alphabeta@alpha@hiatus}
\DeclareTextCompositeCommand{\accACUTE}{#1}{\Epsilon}{\alphabeta@epsilon@hiatus}
\DeclareTextCompositeCommand{\accACUTE}{#1}{\Eta }{\textEta }
\DeclareTextCompositeCommand{\accACUTE}{#1}{\Iota }{\textIota }
\DeclareTextCompositeCommand{\accACUTE}{#1}{\Upsilon}{\textUpsilon}
\DeclareTextCompositeCommand{\accACUTE}{#1}{\Omega }{\textOmega }
%
\DeclareTextCompositeCommand{\accGRAVE}{#1}{\Alpha }{\textAlpha }
\DeclareTextCompositeCommand{\accGRAVE}{#1}{\Epsilon}{\textEpsilon}
\DeclareTextCompositeCommand{\accGRAVE}{#1}{\Eta }{\textEta }
\DeclareTextCompositeCommand{\accGRAVE}{#1}{\Iota }{\textIota }
\DeclareTextCompositeCommand{\accGRAVE}{#1}{\Upsilon}{\textUpsilon}
\DeclareTextCompositeCommand{\accGRAVE}{#1}{\Omega }{\textOmega }
%
\DeclareTextCompositeCommand{\accTILDE}{#1}{\Alpha }{\textAlpha }
\DeclareTextCompositeCommand{\accTILDE}{#1}{\Eta }{\textEta }
\DeclareTextCompositeCommand{\accTILDE}{#1}{\Iota }{\textIota }
\DeclareTextCompositeCommand{\accTILDE}{#1}{\Upsilon}{\textUpsilon}
\DeclareTextCompositeCommand{\accTILDE}{#1}{\Omega }{\textOmega }
}
% Hiatus feature
% ''''''''''''''
%
% Look ahead and place a diaeresis on �� or ��.
% Leads to errors in PU. ::
\newcommand*{\alphabeta@hiatus@composites}[1]{
\DeclareTextCommand{\alphabeta@alpha@hiatus}{#1}{%
\csname LGR@ifnextchar\endcsname {\Iota}{\Alpha\"}{%
\csname LGR@ifnextchar\endcsname {\Upsilon}{\Alpha\"}{\Alpha}%
}%
}
\DeclareTextCommand{\alphabeta@epsilon@hiatus}{#1}{%
\csname LGR@ifnextchar\endcsname {\Iota}{\Epsilon\"}{%
\csname LGR@ifnextchar\endcsname {\Upsilon}{\Epsilon\"}{\Epsilon}%
}%
}
\DeclareTextCompositeCommand{\LGR@hiatus}{#1}{\Alpha}{\alphabeta@alpha@hiatus}
\DeclareTextCompositeCommand{\LGR@hiatus}{#1}{\Epsilon}{\alphabeta@epsilon@hiatus}
}
% Composites for TU
% '''''''''''''''''
%
% With font encoding TU, pre-composed characters are selected by the
% the Harfbuzz renderer (default for XeTeX, select with fontspec for LuaTeX).
% Exception: the (standard) combining tilde. ::
\@ifl@aded{def}{tuenc-greek}{
\DeclareUnicodeComposite{\~}{\alpha }{"1FB6} % ���
\DeclareUnicodeComposite{\~}{\eta }{"1FC6} % ���
\DeclareUnicodeComposite{\~}{\iota }{"1FD6} % ���
\DeclareUnicodeComposite{\~}{\upsilon}{"1FE6} % ���
\DeclareUnicodeComposite{\~}{\omega }{"1FF6} % ���
\alphabeta@drop@capital@accents{\UnicodeEncodingName}
\alphabeta@hiatus@composites{\UnicodeEncodingName}
}{}
% Composites for LGR
% ''''''''''''''''''
% ::
\@ifl@aded{def}{lgrenc}{
\alphabeta@select@precomposed{LGR}
\alphabeta@hiatus@composites{LGR}
}{}
% Composites for PU
% '''''''''''''''''
%
% Load composite defs::
\@ifl@aded{def}{puenc}{
\alphabeta@select@precomposed{PU}
\alphabeta@drop@capital@accents{PU}
% The hiatus feature leads to errors in PU::
\DeclareTextCompositeCommand{\LGR@hiatus}{PU}{\Alpha}{\textAlpha}
\DeclareTextCompositeCommand{\LGR@hiatus}{PU}{\Epsilon}{\textEpsilon}
% fix ``\'\alpha`` and ``\'\epsilon`` (\'{\alpha} works):
\DeclareTextCompositeCommand{\accACUTE}{PU}{\Alpha }{\textAlpha}
\DeclareTextCompositeCommand{\accACUTE}{PU}{\Epsilon}{\textEpsilon}
}{}
% -------------------------------------------
%
% Drop auxiliary definitions to free memory::
\renewcommand*{\alphabeta@select@precomposed }{\relax}
\renewcommand*{\alphabeta@drop@capital@accents}{\relax}
\renewcommand*{\alphabeta@hiatus@composites }{\relax}
% Case changing
% -------------
%
% We need to extend the case-mapping ``\@uclclist`` for characters that are
% defined with ``\DeclareTextCommandDefault``.
%
% 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's way of writing ``@uclclist += ���``.
%
% Since 2022, ``\MakeUppercase`` expects the default for ambiguous mappings
% in first position, before, the default was in last position.
% ::
\providecommand*\alphabeta@update@uclclist{%
\expandafter\def\expandafter\@uclclist\expandafter{%
\@uclclist
\alpha \Alpha
\epsilon \Epsilon
\epsilonsymbol \Epsilon
\varepsilon \Epsilon
\eta \Eta
\iota \Iota
\omicron \Omicron
\rho \Rho
\varrho \Rho
\rhosymbol \Rho
\upsilon \Upsilon
\omega \Omega
% repeat default for pre-2022 \MakeUppercase
\epsilon \Epsilon
\rho \Rho
}%
\let\alphabeta@update@uclclist\relax
}
% Expand the @uclclist using the just defined macro::
\alphabeta@update@uclclist
% Re-definition for Greek Unicode input in math mode
% --------------------------------------------------
%
% Map Greek characters that are also defined in math mode to the letter-name
% macros::
\ifdefined\DeclareUnicodeCharacter
\DeclareUnicodeCharacter{0393}{\Gamma} % ��
\DeclareUnicodeCharacter{0394}{\Delta} % ��
\DeclareUnicodeCharacter{0398}{\Theta} % ��
\DeclareUnicodeCharacter{039B}{\Lambda} % ��
\DeclareUnicodeCharacter{039E}{\Xi} % ��
\DeclareUnicodeCharacter{03A0}{\Pi} % ��
\DeclareUnicodeCharacter{03A3}{\Sigma} % ��
\DeclareUnicodeCharacter{03A5}{\Upsilon} % ��
\DeclareUnicodeCharacter{03A6}{\Phi} % ��
\DeclareUnicodeCharacter{03A8}{\Psi} % ��
\DeclareUnicodeCharacter{03A9}{\Omega} % ��
\DeclareUnicodeCharacter{03B1}{\alpha} % ��
\DeclareUnicodeCharacter{03B2}{\beta} % ��
\DeclareUnicodeCharacter{03B3}{\gamma} % ��
\DeclareUnicodeCharacter{03B4}{\delta} % ��
\DeclareUnicodeCharacter{03B5}{\varepsilon} % �� textepsilon/varepsilon
\DeclareUnicodeCharacter{03B6}{\zeta} % ��
\DeclareUnicodeCharacter{03B7}{\eta} % ��
\DeclareUnicodeCharacter{03B8}{\theta} % ��
\DeclareUnicodeCharacter{03B9}{\iota} % ��
\DeclareUnicodeCharacter{03BA}{\kappa} % ��
\DeclareUnicodeCharacter{03BB}{\lambda} % ��
\DeclareUnicodeCharacter{03BC}{\mu} % ��
\DeclareUnicodeCharacter{03BD}{\nu} % ��
\DeclareUnicodeCharacter{03BE}{\xi} % ��
\DeclareUnicodeCharacter{03C0}{\pi} % ��
\DeclareUnicodeCharacter{03C1}{\rho} % ��
\DeclareUnicodeCharacter{03C2}{\finalsigma} % ��
\DeclareUnicodeCharacter{03C3}{\sigma} % ��
\DeclareUnicodeCharacter{03C4}{\tau} % ��
\DeclareUnicodeCharacter{03C5}{\upsilon} % ��
\DeclareUnicodeCharacter{03C6}{\varphi} % �� textphi/varphi
\DeclareUnicodeCharacter{03C7}{\chi} % ��
\DeclareUnicodeCharacter{03C8}{\psi} % ��
\DeclareUnicodeCharacter{03C9}{\omega} % ��
\DeclareUnicodeCharacter{03D1}{\thetasymbol} % ��
\DeclareUnicodeCharacter{03D5}{\phisymbol} % �� $\phi$
\DeclareUnicodeCharacter{03D6}{\pisymbol} % ��
\DeclareUnicodeCharacter{03DD}{\digamma} % ��
\DeclareUnicodeCharacter{03F1}{\rhosymbol} % ��
\DeclareUnicodeCharacter{03F5}{\epsilonsymbol} % �� $\epsilon$
\fi
% ::
\RestoreAtCatcode
} % close the \AtBeginDocument macro
% Changelog
% =========
%
% .. class:: borderless
%
% ====== =========== ========================================================
% 0.1 2012-06-26 initial version
% 0.2 2013-05-03 new accent macro names with ``lgrxenc.def`` 0.7
% 0.3 2013-05-28 use ``lgrenc.def`` from greek-fontenc,
% .. enable Unicode input in math mode.
% 0.4 2013-09-11 move to greek-fontenc_, support XeTeX/LuaTeX.
% 0.13 2015-09-04 Support for `variant symbols`.
% 0.13.2 2016-02-05 Support for standard Unicode text font encoding "TU"
% (new in fontspec v2.5a).
% 0.14 2020/02/28 rename ``alphabeta-euenc.def`` to
% ``alphabeta-tuenc.def``.
% 1.0 2020/09/25 New package version. No changes in this file.
% 2.0 2020/10/13 Provide ``\Koppa``.
% 2.2.1 2023-03-08 Documentation update.
% 2.5 2023-09-12 Fixes for ``\MakeUppercase`` / ``\MakeLowercase``.
% .. Text mode alias ``\varTheta`` ��� ``\Theta``.
% .. Overwrite legacy `babel-greek` alias ``\qoppa`` (��)
% with ``\textqoppa`` (��).
% .. Inline ``alphabeta-tuenc.def`` and ``alphabeta-lgr.def``
% (dropping redundant composite definitions).
% .. Composite definitions to select pre-composed characters
% in PU (PDF strings).
% 2.6 2023-11-16 Don't use TextCommands for generic macros
% (fixes warnings in math mode and errors with bm_).
% ====== =========== ========================================================
%
%
% .. References
% ----------
% .. _LaTeX Project Public License: http://www.latex-project.org/lppl.txt
% .. _CB Fonts: https://ctan.org/pkg/cbgreek-complete
% .. _Babel: https://ctan.org/pkg/babel
% .. _babel-greek: https://ctan.org/pkg/babel-greek
% .. _bm: https://ctan.org/pkg/bm
% .. _e-TeX: http://www.tex.ac.uk/cgi-bin/texfaq2html?label=etex
% .. _etoolbox: https://ctan.org/pkg/etoolbox
% .. _greek-fontenc: https://ctan.org/pkg/greek-fontenc
% .. _greek-inputenc: https://ctan.org/pkg/greek-inputenc
% .. _fixltx2e: https://ctan.org/pkg/fixltx2e
% .. _Polyglossia: https://ctan.org/pkg/polyglossia