This bug occurs in 27.2 but not in 26.3
In a clean emacs "emacs -q --no-site-file":
1. Enable dynamic completion "(dynamic-completion-mode)"
2. Open a c++ source file
3. Text should be:
foo() {
std::cerr <
int i = static_cast<unsigned>(z);
}
4. Position the cursor directly after the "<" and type "< " (two characters "<" " "
5. I get this error message: "Scan error: containing expression ends prematurely, 22, 22"
In GNU Emacs 27.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.20)
of 2021-06-02 built on catb
Windowing system distributor 'AT&T Laboratories Cambridge', version 11.0.3332
System Description: Ubuntu 20.04.2 LTS
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading completions from file /home/ruttenberg/.emacs.d/completions . . .
Loading completions from file /home/ruttenberg/.emacs.d/completions . . . Done.
You can run the command ‘dynamic-completion-mode’ with M-x dy-m RET
Loading completions from file /home/ruttenberg/.emacs.d/completions . . . Done.
Error in pre-command-hook (completion-before-command): (scan-error "Containing expression ends prematurely" 16 16)
symbol-before-point: Scan error: "Containing expression ends prematurely", 17, 17
Configured using:
'configure --prefix=/opt/emacs-27.2'
Configured features:
XPM JPEG TIFF GIF PNG SOUND DBUS GSETTINGS GLIB NOTIFY INOTIFY
LIBSELINUX GNUTLS FREETYPE HARFBUZZ XFT ZLIB TOOLKIT_SCROLL_BARS GTK3
X11 XDBE XIM MODULES THREADS PDUMPER GMP
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: C++//l
Minor modes in effect:
dynamic-completion-mode: t
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
abbrev-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message rmc puny dired dired-loaddefs
format-spec rfc822 mml mml-sec password-cache epa derived epg epg-config
gnus-util rmail rmail-loaddefs text-property-search time-date subr-x seq
byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils cc-mode cc-fonts
easymenu cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars
cc-defs cl-loaddefs cl-lib cus-start cus-load completion tooltip eldoc
electric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win
x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese composite charscript charprop case-table epa-hook
jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads dbusbind inotify dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty
make-network-process emacs)
Memory information:
((conses 16 76735 9686)
(symbols 48 9655 1)
(strings 32 23478 2066)
(string-bytes 1 843632)
(vectors 16 13035)
(vector-slots 8 166467 11092)
(floats 8 22 45)
(intervals 56 208 3)
(buffers 1000 14))