bug#71389: 29.3; Eglot stopped returning completions for dart-mode

[Eli Zaretskii <eliz@gnu.org>]

> Date: Thu, 6 Jun 2024 00:38:16 -0500
> From: Randy Burrell <randyburrell@randyburrell.info>
> 
> In GNU Emacs 29.3 (build 1, aarch64-apple-darwin21.6.0, NS 
> appkit-2113.60 Version 12.6.6 (Build 21G646)) of 2024-03-24 built on 
> armbob.lan 
> Windowing system distributor 'Apple', version 10.3.2487 
> System Description: macOS 14.5 
> 
> Configured using: 
> 'configure --with-ns '--enable-locallisppath=/Library/Application 
> Support/Emacs/${version}/site-lisp:/Library/Application 
> Support/Emacs/site-lisp' --with-modules 'CFLAGS=-DFD_SETSIZE=10000 
> -DDARWIN_UNLIMITED_SELECT' --with-x-toolkit=no' 
> 
> Configured features: 
> ACL GLIB GMP GNUTLS JPEG JSON LIBXML2 MODULES NOTIFY KQUEUE NS PDUMPER 
> PNG RSVG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER ZLIB 
> 
> Important settings: 
>  value of $LC_COLLATE: en_US.UTF-8 
>  value of $LC_MESSAGES: en_US.UTF-8 
>  value of $LC_MONETARY: en_US.UTF-8 
>  value of $LC_NUMERIC: en_US.UTF-8 
>  value of $LC_TIME: en_US.UTF-8 
>  value of $LANG: en_US.UTF-8 
>  locale-coding-system: utf-8-unix 
> 
> Major mode: Fundamental 
> 
> Minor modes in effect: 
>  tooltip-mode: t 
>  global-eldoc-mode: t 
>  show-paren-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 
>  blink-cursor-mode: t 
>  buffer-read-only: t 
>  line-number-mode: t 
>  indent-tabs-mode: t 
>  transient-mark-mode: t 
>  auto-composition-mode: t 
>  auto-encryption-mode: t 
>  auto-compression-mode: t 
> 
> Load-path shadows: 
> /Users/randyburrell/.emacs.d/elpa/jsonrpc-1.0.25/jsonrpc hides
> /Applications/Emacs.app/Contents/Resources/lisp/jsonrpc 
> /Users/randyburrell/.emacs.d/elpa/eglot-1.17/eglot hides
> /Applications/Emacs.app/Contents/Resources/lisp/progmodes/eglot 
> /Users/randyburrell/.emacs.d/elpa/eldoc-1.15.0/eldoc hides
> /Applications/Emacs.app/Contents/Resources/lisp/emacs-lisp/eldoc 
> 
> Features: 
> (shadow sort mail-extr emacsbug message yank-media puny dired 
> dired-loaddefs rfc822 mml mml-sec epa derived epg rfc6068 epg-config 
> gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev 
> gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util 
> mail-prsvr mail-utils time-date cl-extra eglot external-completion 
> jsonrpc xref flymake-proc flymake thingatpt project diff ert pp ewoc 
> debug backtrace help-mode find-func filenotify warnings icons compile 
> text-property-search comint ansi-osc ansi-color ring pcase imenu vc-git 
> diff-mode easy-mmode vc-dispatcher dart-mode finder-inf 
> consult-eglot-autoloads consult-autoloads corfu-terminal-autoloads 
> corfu-autoloads compat-autoloads dart-mode-autoloads eglot-autoloads 
> eldoc-autoloads flutter-autoloads jsonrpc-autoloads info 
> orderless-autoloads popon-autoloads package browse-url url url-proxy 
> url-privacy url-expand url-methods url-history url-cookie 
> generate-lisp-file url-domsuf url-util mailcap url-handlers url-parse 
> auth-source cl-seq eieio eieio-core cl-macs password-cache json subr-x 
> map byte-opt gv bytecomp byte-compile url-vars cl-loaddefs cl-lib rmc 
> iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook 
> vc-hooks lisp-float-type elisp-mode mwheel term/ns-win ns-win 
> ucs-normalize mule-util term/common-win tool-bar dnd fontset image 
> regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode 
> prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu 
> timer select scroll-bar mouse jit-lock font-lock syntax font-core 
> term/tty-colors frame minibuffer nadvice seq simple cl-generic 
> indonesian philippine 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 emoji-zwj charscript charprop case-table epa-hook 
> jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs 
> theme-loaddefs faces cus-face macroexp files window text-properties 
> overlay sha1 md5 base64 format env code-pages mule custom widget keymap 
> hashtable-print-readable backquote threads kqueue cocoa ns multi-tty 
> make-network-process emacs) 
> 
> Memory information: 
> ((conses 16 297409 9536) 
> (symbols 48 17763 0) 
> (strings 32 102305 2785) 
> (string-bytes 1 2559906) 
> (vectors 16 30106) 
> (vector-slots 8 438788 19952) 
> (floats 8 201 80) 
> (intervals 56 842 0) 
> (buffers 984 15)) 
> 
> I find that completions no longer work for dart-mode while using 
> eglot. I have been trying consistently for the past 2 weeks to have 
> completions activated in dart-mode again. 
> 
> I have included a video here https://share.cleanshot.com/4HfXLRXj. 
> 
> There is also a discussions surrounding this problem here
> https://github.com/joaotavora/eglot/discussions/1405#discussioncomment-9685375. 

João, any comments or suggestions?