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| -rw-r--r-- | doc/lispref/ChangeLog | 4 | ||||
| -rw-r--r-- | doc/lispref/display.texi | 20 |
2 files changed, 24 insertions, 0 deletions
diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog index f155c9575fa..26314eadc8e 100644 --- a/doc/lispref/ChangeLog +++ b/doc/lispref/ChangeLog @@ -1,3 +1,7 @@ +2010-02-27 Chong Yidong <cyd@stupidchicken.com> + + * display.texi (Low-Level Font): Document :otf font-spec property. + 2010-02-01 Stefan Monnier <monnier@iro.umontreal.ca> * display.texi (Line Height): Avoid obsolete special default variables diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi index 91a71c54a6d..68631dcdefc 100644 --- a/doc/lispref/display.texi +++ b/doc/lispref/display.texi @@ -3068,6 +3068,26 @@ The charset registry and encoding of the font, such as @item :script The script that the font must support (a symbol). + +@item :otf +The font must be an OpenType font that supports these OpenType +features, provided Emacs is compiled with support for @samp{libotf} (a +library for performing complex text layout in certain scripts). The +value must be a list of the form + +@smallexample +@code{(@var{script-tag} @var{langsys-tag} @var{gsub} @var{gpos})} +@end smallexample + +where @var{script-tag} is the OpenType script tag symbol; +@var{langsys-tag} is the OpenType language system tag symbol, or +@code{nil} to use the default language system; @code{gsub} is a list +of OpenType GSUB feature tag symbols, or @code{nil} if none is +required; and @code{gpos} is a list of OpenType GPOS feature tag +symbols, or @code{nil} if none is required. If @code{gsub} or +@code{gpos} is a list, a @code{nil} element in that list means that +the font must not match any of the remaining tag symbols. The +@code{gpos} element may be omitted. @end table @end defun |