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| author | Robert Pluim <rpluim@gmail.com> | 2020-01-20 17:59:38 +0100 |
|---|---|---|
| committer | Robert Pluim <rpluim@gmail.com> | 2020-01-20 18:01:57 +0100 |
| commit | 06166aa7192d3fc01e5aa242936daf5e88adb904 (patch) | |
| tree | 5db0a7c8b96dcbad065c945d83050372bcbe536e /doc/lispref/frames.texi | |
| parent | 2eb834ead401fa83270cad585a4310e2e05b8baa (diff) | |
| download | emacs-06166aa7192d3fc01e5aa242936daf5e88adb904.tar.gz emacs-06166aa7192d3fc01e5aa242936daf5e88adb904.tar.bz2 emacs-06166aa7192d3fc01e5aa242936daf5e88adb904.zip | |
Improve explanation of available font backends under X
* frames.texi (Font and Color Parameters): Clarify that you can't
have HarfBuzz and non-HarfBuzz at the same time for xft and cairo
font backends.
Diffstat (limited to 'doc/lispref/frames.texi')
| -rw-r--r-- | doc/lispref/frames.texi | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi index 05038c6f52b..0c42ebfd67a 100644 --- a/doc/lispref/frames.texi +++ b/doc/lispref/frames.texi @@ -2294,14 +2294,17 @@ variable do not take effect immediately, only when you specify the @item font-backend A list of symbols, specifying the @dfn{font backends} to use for drawing characters on the frame, in order of priority. In Emacs built -without Cairo drawing on X, there are currently three available font -backends: @code{x} (the X core font driver), @code{xft} (the Xft font -driver), and @code{xfthb} (the Xft font driver with HarfBuzz text -shaping). If built with the Cairo drawing, there are also three -available font backends on X: @code{x}, @code{ftcr} (the FreeType font -driver on Cairo), and @code{ftcrhb} (the FreeType font driver on Cairo -with HarfBuzz text shaping). On MS-Windows, there are currently three -available font backends: @code{gdi} (the core MS-Windows font driver), +without Cairo drawing on X, there are currently three potentially +available font backends: @code{x} (the X core font driver), @code{xft} +(the Xft font driver), and @code{xfthb} (the Xft font driver with +HarfBuzz text shaping). If built with Cairo drawing, there are also +three potentially available font backends on X: @code{x}, @code{ftcr} +(the FreeType font driver on Cairo), and @code{ftcrhb} (the FreeType +font driver on Cairo with HarfBuzz text shaping). Note that the +@code{ftcr} and @code{ftcrhb} drivers are mutually exclusive (and +similarly for @code{xft} and @code{xfthb}), with the choice being made +at build time. On MS-Windows, there are currently three available +font backends: @code{gdi} (the core MS-Windows font driver), @code{uniscribe} (font driver for OTF and TTF fonts with text shaping by the Uniscribe engine), and @code{harfbuzz} (font driver for OTF and TTF fonts with HarfBuzz text shaping) (@pxref{Windows Fonts,,, emacs, |