--- /dev/null
+local t = luatexja.jfont.jfm_feature
+myjfm = t
+local k = (type(t and t.kern)=='string') and tonumber(t.kern) or 0.0
+local d = (type(t and t.down)=='string') and tonumber(t.down) or 0.0
+local t2= {
+ dir = 'yoko',
+ zw = 1.0, zh = 1.0,
+ [0] = {
+ align = 'left', left = 0.0, down = 0.0,
+ width = 1.0, height = 0.88, depth = 0.12, italic=0.0,
+ kern = { [1] = k }
+ },
+ [1] = {
+ chars = { '漢', '字', },
+ align = 'left', left = 0.0, down = d,
+ width = 0.5, height = 0.88, depth = 0.12, italic=0.0,
+ kern = { [0] = 0.5, [2] = 0.5, [1000] = 0.5 }
+ },
+ [2] = {
+ chars = { 'イ' },
+ align = 'left', left = 0.0, down = 0.0,
+ width = 1.0, height = 0.88, depth = 0.12, italic=0.0,
+ kern = { [1] = k }
+ },
+ [1000] = {
+ chars = { 'boxbdd' },
+ },
+}
+if t and t.hira then
+ for i=0x3040,0x309F do
+ table.insert(t2[1].chars, i)
+ end
+end
+luatexja.jfont.define_jfm (t2)
An optional comma-separated list of JFM options.
Enclosing braces (\verb+{}+) are optional, but this does not escape any characters.
The contents of this list can be accessed by a table \texttt{luatexja.jfont.jfm\_feature}
- from a JFM, at its loading.
+ from a JFM, at its loading. See \autoref{fig:jfmfeat} for an example.
\item[<identifier>]
An optional string.
\end{description}
However, because they use the same JFMs and their size are same,
\LuaTeX-ja inserts penalties, glues and kerns as if these two character are typeset in a same font.
Namely, the glue between these characters is halfwidth, as in ``）\nobreak【''.
-
However, this does not applies with \cs{F}~and~\cs{H} in \autoref{fig:jfmvar},
-because their <identifier> are different. ...
+because their <identifier> are different.
%</en>
%<*ja>
\begin{description}
省略可能なコンマ区切りリスト．全体を囲む\verb+{}+は省略可能であるが，
囲ったからといって<JFM features>の中で使用可能な文字が増えるわけではない．
<JFM features>で指定された内容は，テーブル\texttt{luatexja.jfont.jfm\_feature}として
- JFM読み込み時に（JFMから）アクセス可能である．
+ JFM読み込み時に（JFMから）アクセス可能である．\autoref{fig:jfmfeat}に使用例を載せた．
\item[<identifier>]
省略可能な文字列．
\end{description}
\pTeX と似た状況で組版されることになる．
%</ja>
+\def\T#1{\texttt{#1}}
+\def\printjfmfeat#1{%
+ \relax\texttt{\string#1}:
+ \directlua{%
+ if myjfm then
+ for i,v in pairs(myjfm) do
+ tex.sprint('[\string\\T{' .. i .. '}]${}={}$')
+ if type(v)=='string' then
+ tex.sprint('``\string\\T{' .. tostring(v) .. "}'', ")
+ else
+ tex.sprint(tostring(v) ..', ')
+ end
+ end
+ else tex.sprint('(nil)')
+ end
+ }\par
+}
+\begin{figure}
+\begin{LTXexample}[pos=t]
+\small\ltjsetparameter{differentjfm=both}\tabcolsep=.5\zw
+% \printjfmfeat is defined in the source of this document
+\jfont\A=HaranoAjiMincho-Regular:jfm=testf at 9pt \printjfmfeat\A
+\jfont\B=HaranoAjiMincho-Bold:jfm=testf/kern=0.5,-ps,+kana at 9pt \printjfmfeat\B
+\jfont\C=HaranoAjiGothic-Regular:jfm=testf/kern=0.5,down=0.2 at 9pt \printjfmfeat\C
+\jfont\D=HaranoAjiGothic-Bold:jfm=testf/down=0.2,kern=0.5 at 9pt \printjfmfeat\D
+\def\TEST#1{\string#1&{#1あ漢}{\A イ字}&{#1あ漢}{\B イ字}&{#1あ漢}{\C イ字}&{#1あ漢}{\D イ字}}
+\vspace{-4\baselineskip}\hfill\ttfamily
+\begin{tabular}{lllll}
+ &\string\A&\string\B&\string\C&\string\D\\\TEST\A\\\TEST\B\\\TEST\C\\\TEST\D\\
+\end{tabular}
+\ltjsetparameter{differentjfm=paverage}
+\end{LTXexample}
+\caption{Example of <JFM features>}
+\label{fig:jfmfeat}
+\end{figure}
%<en>\paragraph{Default horizontal JFMs}
%<ja>\paragraph{標準の横組用JFM}
%</ja>
%<*ja>
-\newpage
\paragraph{\texttt{extend}と\texttt{slant}}
OpenType機能と見かけ上同じような形式で指定できるものに，
\begin{description}
Note that \LuaTeX-ja doesn't adjust JFMs by these \texttt{extend} and \texttt{slant}
settings; one have to write new JFMs on purpose.
For example, the following example uses the standard JFM \texttt{jfm-ujis.lua}, hence
-letter-spacing and the width of italic correction are not correct:
+the letterspacing and the width of italic corrections are not correct:
%</en>
\begin{LTXexample}[width=0.3\textwidth]
\jfont\E=HaranoAjiMincho-Regular:extend=1.5;jfm=ujis;-kern
\end{LTXexample}
%<*ja>
-\paragraph{\texttt{ltjksp}指定}
+\paragraph{\texttt{ltjksp}「機能」}
\label{pg:ltjksp}
\LuaTeX-ja標準では，
JFM中における\texttt{kanjiskip\_natural}, \texttt{kanjiskip\_stretch},\
最後に指定したものが有効となる．
%</ja>
%<*en>
-\paragraph{\texttt{ltjksp}}
+\paragraph{\texttt{ltjksp} ``feature''}
\label{pg:ltjksp}
\texttt{kanjiskip\_natural}, \texttt{kanjiskip\_stretch},\
\texttt{kanjiskip\_shrink} keys (Page~\pageref{pg:ksp_nat}) makes tha
\G\leavevmode%
\vrule\hbox to 15\zw{あ「い」う，えお}\vrule
\end{LTXexample}
-\caption{\texttt{ltjksp}}
+\caption{\texttt{ltjksp} `feature''}
\label{fig:ltjksp}
\end{figure}
-%<*ja>
-\paragraph{JFM feature（\LuaTeX-ja~20200919.0以降）}
-\ref{ssec:jfm-str}節で述べるように，JFMファイルはLuaスクリプトである．
-そのため，JFMを読み込む際にグローバル変数の値を参照して挙動を変えることができる．
-たとえば阿部紀行氏によるjlreqで使われている\texttt{jfm-jlreq.lua}では，
-\begin{quote}
- JFMを読み込む際に変数\texttt{jlreq.danraku}の値を参照し，
- この値が\verb+"zenkakunibu"+や\verb+"nibu"+のときは段落行頭の開き括弧の下げ量を設定する
-\end{quote}
-などといったことが行われている．
-
-バージョン20200919.0以降では，JFM指定で...
-%</ja>
-%<*en>
-\paragraph{JFM feature (introduced in \LuaTeX-ja~20200919.0)}
-%</en>
-
-
%<en>\subsection{\cs{tfont}}
%<ja>\subsection{\cs{tfont} 命令}
\label{ssec:tfont}
A font defined by~\cs{tfont} differs the following points from that by~\cs{jfont}:
\begin{itemize}
\item OpenType Feature~\texttt{vrt2}%
- \footnote{If the font does not define \texttt{vrt2} feature,
+ \footnote{If the font does not define the \texttt{vrt2} feature,
\texttt{vert} is used instead.} is automatically activated,
- unless \texttt{vert}~and//or~\texttt{vrt2} are explicitly activated
+ unless \texttt{vert}~and//or~\texttt{vrt2} features are explicitly activated
or deactivated (as the second line in the example below).
\begin{lstlisting}
\tfont\S=HaranoAjiMincho-Regular:jfm=ujisv % vrt2 is automatically activated
\cs{tfont}で定義された縦組用和文フォントは，
以下の点が\cs{jfont}による横組用和文フォントとは異なる：
\begin{itemize}
- \item 明示的に\texttt{vert}, \texttt{vrt2}（のいずれか）の
+ \item 明示的にOpenType機能\texttt{vert}, \texttt{vrt2}（のいずれか）の
有効・無効を指定した場合を除き，自動的にOpenType機能\texttt{vrt2}の有効化が
指定されたものとみなされる
\footnote{もしフォントが\texttt{vrt2}を定義していなかった場合，代わりに
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