On Windows, load the attached file: M-x load-file debug-process.el It signals an error, with the message "Creating pipe: Too many open files". On Debian the error does not happen. In Emacs 28, and in emacs master in December 2021, the error does not happen.
debug-process.el
Description: application/emacs-lisp
In GNU Emacs 29.0.50 (build 2, x86_64-w64-mingw32) of 2022-07-16 built on TAKVER4 Repository revision: 35d0a2e0a767838c24d5853be798313aed7a42df Repository branch: master Windowing system distributor 'Microsoft Corp.', version 6.3.9600 System Description: Microsoft Windows 8.1 Pro (v6.3.0.9600.20478) Configured using: 'configure PKG_CONFIG_PATH=/mingw64/lib/pkgconfig:/mingw64/share/pkgconfig' Configured features: ACL DBUS GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP XPM ZLIB Important settings: value of $LC_CTYPE: en_US.UTF-8 value of $LANG: ENU locale-coding-system: cp1252 Major mode: Summary Minor modes in effect: debbugs-browse-mode: t bug-reference-mode: t display-time-mode: t delete-selection-mode: t icomplete-mode: t tooltip-mode: t global-eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t buffer-read-only: t line-number-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow emacsbug mailalias smerge-mode diff canlock bbdb-message gnus-kill mule-util sort smiley gnus-cite flow-fill mm-archive mail-extr textsec uni-scripts idna-mapping ucs-normalize uni-confusable textsec-check gnus-async gnus-bcklg qp gnus-ml vc-mtn vc-git diff-mode vc vc-dispatcher debbugs-browse bug-reference utf-7 imap rfc2104 nndraft nnmh gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg nnml gnus-cache bbdb-gnus network-stream nsm nntp gnus-art mm-uu mml2015 mm-view mml-smime smime gnutls dig gnus-sum shr pixel-fill kinsoku url-file url-dired svg dom gnus-group gnus-undo gnus-start gnus-dbus dbus xml gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo parse-time iso8601 gnus-spec gnus-int gnus-range gnus-win gnus wid-edit nnheader range message yank-media puny rfc822 mml mml-sec epa epg rfc6068 epg-config gnus-util time-date mm-decode mm-bodies mm-encode mail-parse rfc2231 gmm-utils mailheader bbdb-mua bbdb-com pcase crm mailabbrev bbdb derived bbdb-site timezone smtpmail sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils time delsel cus-load stephe-theme noutline outline easy-mmode path-iterator cl-extra help-mode whitespace dired-x dired-aux dired dired-loaddefs compile text-property-search comint ansi-color uniquify-files icomplete xref project ring info 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 cconv url-vars cl-loaddefs cl-lib rmc iso-transl tooltip eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win w32-vars 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 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 w32notify dbusbind w32 lcms2 multi-tty make-network-process emacs) Memory information: ((conses 16 366274 36249) (symbols 48 19973 3) (strings 32 79351 4442) (string-bytes 1 2356349) (vectors 16 59637) (vector-slots 8 1148125 74030) (floats 8 284 234) (intervals 56 2094 329) (buffers 992 28)) -- -- Stephe
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