Allow selection of font for symbols as in Emacs 24.x

* src/fontset.c (syms_of_fontset) <use-default-font-for-symbols>:
New boolean variable.
(face_for_char): Use it to fall back to pre-Emacs 25.1 behavior
when selecting fonts for displaying symbol and punctuation
characters.  (Bug#24644)

* etc/NEWS: Mention the new variable.

1 files changed, 13 insertions, 2 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 274226b9fd9..8c27289d5e0 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -24,8 +24,19 @@ This is a bug-fix release with (almost) no new features.
 `find-function-after-hook'.
 
 +++
-*** New basic face 'fixed-pitch-serif', for a fixed-width font with serifs.
-The Info-quoted and tex-verbatim faces now default to inheriting from it.
+** New basic face 'fixed-pitch-serif', for a fixed-width font with serifs.
+The Info-quoted and tex-verbatim faces now default to inheriting from
+it.
+
+---
+** New variable 'use-default-font-for-symbols' for backward compatibility.
+This variable allows to get back pre-Emacs 25 behavior whereby the
+font for displaying symbol and punctuation characters was always
+selected according to your fontset setup.  Emacs 25 by default tries
+to use the default face's font for such characters, disregarding the
+fontsets if the default font supports these characters.  Set this
+variable to nil to disable the new behavior and get back the old
+behavior.
 
 
 * Installation Changes in Emacs 25.1