diff options
| -rw-r--r-- | doc/luaotfload-main.tex | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/doc/luaotfload-main.tex b/doc/luaotfload-main.tex index c418991..92a4c01 100644 --- a/doc/luaotfload-main.tex +++ b/doc/luaotfload-main.tex @@ -188,9 +188,30 @@ for a more formal description see figure \ref{font-syntax}. <specification> ::= <prefixed spec>, [ <subfont no> ], \{ <modifier> \} \alt <anon lookup>, \{ <modifier> \} ; - <prefixed spec> ::= `file:', <file lookup> + <prefixed spec> ::= `combo:', <combo list> + \alt `file:', <file lookup> \alt `name:', <name lookup> ; + <combo list> ::= <combo def 1>, \{ `;', <combo def> \} ; + + <combo def 1> ::= <combo id>, `->', <combo id> ; + + <combo def> ::= <combo id>, `->', <combo id chars> ; + + <combo id> ::= (`(', \{ {\sc digit} \}, `)' | \{ {\sc digit} \} ) ; + + <combo id chars> ::= (`(', \{ {\sc digit} \}, `,', <combo chars>, `)' + \alt \{ {\sc digit} \} ) ; + + <combo chars> ::= `fallback' + \alt \{ <combo range>, \{ `*', <combo range> \} \} ; + + <combo range> ::= <combo num>, [ `-', <combo num> ] ; + + <combo num> ::= `0x', \{ {\sc hexdigit} \} + \alt `U+', \{ {\sc digit} \} + \alt \{ {\sc digit} \} ; + <file lookup> ::= \{ <name character> \} ; <name lookup> ::= \{ <name character> \} ; @@ -227,12 +248,11 @@ requires a \emphasis{prefix}: \endnarrower % where \meta{prefix} is either \inlinecode{file:} or \inlinecode {name:}.\footnote{% - The development version also knows two further prefixes, - \inlinecode {kpse:} and \inlinecode {my:}. + \identifier{Luaotfload} also knows two further prefixes, \inlinecode {kpse:} + and \inlinecode {my:}. % A \inlinecode {kpse} lookup is restricted to files that can be found by - \identifier{kpathsea} and - will not attempt to locate system fonts. + \identifier{kpathsea} and will not attempt to locate system fonts. % This behavior can be of value when an extra degree of encapsulation is needed, for instance when supplying a customized tex distribution. @@ -373,7 +393,7 @@ have no meaning in \LUATEX. \beginsubsubsection{Loading by File Name} -For example, conventional \abbrev{type1} font can be loaded with a +For example, conventional \TeX\ font can be loaded with a \inlinecode {file:} request like so: \beginlisting @@ -784,6 +804,8 @@ advance as well as a special \emphasis{request syntax}. Furthermore, this allows to define \emphasis{fallback fonts} to supplement fonts that may lack certain required glyphs. +Combinations are created by defining a font using the \luaident{combo:} prefix. + \beginsubsection {Fallbacks} For example, the \identifier{Latin Modern} family of fonts does, as indicated |