54909: Untokenize before quoting unquoted literal values

% print -r - ${(q+):-foo = bar}|xxd
00000000: 2766 6f6f 208d 2062 6172 270a            'foo . bar'.
% print -r - ${(q+):-foo * bar}|xxd
00000000: 2766 6f6f 2087 2062 6172 270a            'foo . bar'.
% print -r - ${(qqqq):-foo = bar}
$'foo \215 bar'

1 files changed, 5 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 54595d50b..0cd0c2404 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2026-07-08  Mikael Magnusson  <mikachu@gmail.com>
+
+	* 54909: Src/subst.c: Untokenize before quoting unquoted literal
+	values
+
 2026-07-06  dana  <dana@dana.is>
 
 	* 54894 (tweaked): Completion/compdump: improve performance