Command substitution does not work with 'C-h k'.:
0. emacs -Q
1. C-x r l
2. C-h k m
I now see a buffer with this text:
Mark bookmark on this line to be displayed by \<bookmark-bmenu-mode-map>\[bookmark-bmenu-select].
I expect to see:
Mark bookmark on this line to be displayed by v.
This works as expected in Emacs 27.2. I suspect this is a recent regression.
In GNU Emacs 29.0.50 (build 1, x86_64-apple-darwin17.7.0, NS appkit-1561.61 Version 10.13.6 (Build 17G14042))
of 2022-06-20 built on SK-MacBook-Pro
Repository revision: 162576b634c7a586bd93a904a97aa16790282984
Repository branch: master
Windowing system distributor 'Apple', version 10.3.1561
System Description: Mac OS X 10.13.6
Configured using:
'configure --with-native-compilation'
Configured features:
ACL GIF GLIB GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY KQUEUE NS PDUMPER PNG RSVG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS WEBP XIM ZLIB
Important settings:
value of $LC_CTYPE: UTF-8
locale-coding-system: utf-8-unix