Add Cairo font backend info

* etc/NEWS: Add info about which font backends are available under Cairo.

diff --git a/etc/NEWS b/etc/NEWS
index e2a1eed9bbf3c9eb2ee86b8bb02a3f7c91f616ca..110ce7f4953ee1d29017c00ba6b72fa255d561b1 100644 (file)
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -34,9 +34,9 @@ your font settings.
 Note also that 'FontBackend' settings in .Xdefaults or .Xresources, or
 'font-backend' frame parameter settings in your init files, may need
 to be adjusted, as 'xft' is no longer a valid backend when using
-Cairo.  Use either 'ftcr' or 'ftcrhb' instead for FreeType and
-FreeType + HarfBuzz respectively.  'x' is still a valid backend.
-
+Cairo.  Use 'ftcrhb' if your Emacs was built with HarfBuzz support,
+and 'ftcr' otherwise.  You can this determine by checking
+'system-configuration-features'.  'x' is still a valid backend.
 
 ---
 ** The ftx font backend driver has been removed.