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Diffstat (limited to 'Master/texmf-dist/doc/latex-dev/base/fntguide.tex')
-rw-r--r-- | Master/texmf-dist/doc/latex-dev/base/fntguide.tex | 91 |
1 files changed, 84 insertions, 7 deletions
diff --git a/Master/texmf-dist/doc/latex-dev/base/fntguide.tex b/Master/texmf-dist/doc/latex-dev/base/fntguide.tex index f3231a8183d..59c6499962d 100644 --- a/Master/texmf-dist/doc/latex-dev/base/fntguide.tex +++ b/Master/texmf-dist/doc/latex-dev/base/fntguide.tex @@ -38,7 +38,7 @@ \author{\copyright~Copyright 1995--2019, \LaTeX3 Project Team.\\ All rights reserved.} -\date{July 2019} +\date{October 2019} \begin{document} @@ -170,7 +170,7 @@ Addresses and other details can be found at: This section describes the commands available to class and package writers for specifying and selecting fonts. -\subsection{Text font attributes} +\subsection{Text font attributes} \label{sec:textfontattributes} Every text font in \LaTeX{} has five \emph{attributes}: \begin{description} @@ -1214,6 +1214,13 @@ Tries to load a font from a different font shape declaration given by \item[ssub] Silent variant of `sub', only loggings. +\item[alias] +\NEWfeature{2019/10/15} +Same as `ssub' but with a different logging message. Intended for +cases where the substitution is only done to change the name, e.g., +going from \texttt{regular} series to the official name \texttt{m}. In +that case given a warning that some shape is not found is not correct. + \item[subf] Like the empty function but issues a warning that it has to substitute the external font \m{fontarg} because the desired font shape was not @@ -1603,6 +1610,9 @@ Example: \DeclareFontSubstitution{T1}{cmr}{m}{n} \end{verbatim} + + + \subsection{Case changing} \label{sec:case} @@ -1810,15 +1820,25 @@ with |L|, experimental encodings intended for wide distribution will start with |E|, whilst |U| is for Unknown or Unclassified encodings. \item -Font family names should contain up to five lower case letters. -Where possible, these should conform to the \emph{Filenames for fonts} -font naming scheme. +\NEWdescription{2019/10/15} +Font family names should contain only upper and lower case letters and +hyphen characters. Where possible, these should conform to the +\emph{Filenames for fonts} font naming scheme of the scheme +implemented by \texttt{autoinst} with suffixes such as \texttt{-LF}, +\texttt{-OsF}, etc.\ to indicate different figure styles. \item -Font series names should contain up to four lower case letters. +\NEWdescription{2019/10/15} +Font series names should contain up to four lower case letters. If at +all possible standard names as suggested in +Section~\ref{sec:textfontattributes} should be used. Font specific +names such as \texttt{regular} or \texttt{black}, etc.\ should be at +least aliased to a corresponding standard name. \item -Font shapes should contain up to two letters lower case. +\NEWdescription{2019/10/15} +Font shapes should contain up to four letters lower case. Use the +names suggested in Section~\ref{sec:textfontattributes}. \item Names for symbol fonts are built from lower and upper case letters @@ -1844,6 +1864,63 @@ fonts with existing fonts. Note that commands defined in this way must be robust, in case they get put into a section title or other moving argument. + + +\subsection{The order of declaration} + + +\NEWdescription{2019/10/15} +\NFSS{} forces you to give all declarations in a specific order so +that it can check whether you have specified all necessary +information. If you declare objects in the wrong order, it will +complain. Here are the dependencies that you have to obey: +\begin{itemize} +\item +|\DeclareFontFamily| checks that the encoding scheme was previously +declared with |\DeclareFontEncoding|. + +\item +|\DeclareFontShape| checks that the font +family was declared to be available in the requested +encoding (|\DeclareFontFamily|). + +\item +|\DeclareSymbolFont| checks that the encoding scheme is valid. + +\item +|\SetSymbolFont| additionally ensures that the requested math +version was declared (|\DeclareMathVersion|) and that the requested +symbol font was declared (|\DeclareSymbolFont|). + + +\item +|\DeclareSymbolFontAlphabet| checks that the command name for the +alphabet identifier can be used and that the symbol font was declared. + +\item +|\DeclareMathAlphabet| checks that the chosen command name can be +used and that the encoding scheme was declared. + +\item +|\SetMathAlphabet| checks that the alphabet identifier was +previously declared with |\DeclareMathAlphabet| or +|\DeclareSymbolFontAlphabet| and that the math version and the +encoding scheme are known. + +\item +|\DeclareMathSymbol| makes sure that the command name can be used +(i.e., is undefined or was previously declared to be a math symbol) +and that the symbol font was previously declared. + +\item +When the |\begin{document}| command is reached, \NFSS{} makes +some additional checks---for example, verifying that substitution +defaults for every encoding scheme point to known font shape group +declarations. +\end{itemize} + + + \section{If you need to know more \ldots} \NEWdescription{1996/06/01} |