* bug#50246: 28.0.50; persist.el will incorrectly serialize a symbol's value... sometimes
@ 2021-08-29 4:01 Felipe Lema
2021-08-29 19:39 ` Lars Ingebrigtsen
0 siblings, 1 reply; 2+ messages in thread
From: Felipe Lema @ 2021-08-29 4:01 UTC (permalink / raw)
To: 50246
[-- Attachment #1: Type: text/plain, Size: 25669 bytes --]
Hello, there
I've been using persist.el for quite a while (through frecentf.el from MELPA) and it seems that sometimes persist will truncate hash tables (as described in `print-length` 's documentation, using ellipsis).
This ends up in Emacs erroring out at startup due to the serialization being un-hash-table-ish (due to the (quote ...) ).
Unfortunately, I haven't been able to reproduce this problem consistently.
However, I do have a fix for this problem and I've attached it as a patch. It's basically ensuring that printing / serializing a symbol uses the safest configuration possible (no limit for elements, no problems with special characters such as '\0', etc).
The `let` bindings were developed by experience and I'm already using this "safe serialization" config in another package I maintain ( session-async.el ).
Thanks y'all for maintaining Emacs. It's a very useful tool and I use it every day at work.
Felipe
In GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, cairo version 1.15.10)
of 2021-08-28 built on felipe-ThinkPad-X200
Repository revision: 692da8c6a82f8de376a2eec9304773b3e85205f3
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Trisquel GNU/Linux Etiona (9.0)
Configured using:
'configure --without-native-compilation --with-x-toolkit=no
--without-xpm --without-gnutls'
Configured features:
CAIRO DBUS FREETYPE GIF GLIB GSETTINGS HARFBUZZ JPEG LCMS2 LIBXML2
MODULES NOTIFY INOTIFY OLDXMENU PDUMPER PNG SECCOMP SOUND THREADS TIFF
X11 XDBE XIM ZLIB
Important settings:
value of $LC_ALL:
value of $LC_MESSAGES: en_DK.UTF-8
value of $LC_MONETARY: en_DK.UTF-8
value of $LC_NUMERIC: en_DK.UTF-8
value of $LC_TIME: en_DK.UTF-8
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locale-coding-system: utf-8-unix
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size-indication-mode: t
column-number-mode: t
line-number-mode: t
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/home/felipe/.emacs.d/.local/straight/build-28.0.50/org/ob-comint hides /usr/local/share/emacs/28.0.50/lisp/org/ob-comint
/home/felipe/.emacs.d/.local/straight/build-28.0.50/org/ol-eww hides /usr/local/share/emacs/28.0.50/lisp/org/ol-eww
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Features:
(shadow sort disp-table whitespace flycheck-popup-tip
evil-collection-popup popup vi-tilde-fringe display-line-numbers gcmh
hl-line winner paren smartparens-config smartparens-text smartparens
ws-butler undo-fu-session undo-fu flycheck-package package-lint
evil-collection-finder finder finder-inf lisp-mnt
evil-collection-flycheck flycheck mail-extr emacsbug sendmail mule-util
vertico-repeat cursor-sensor evil-collection-which-key which-key
better-jumper company-capf company vertico orderless marginalia
evil-goggles pulse color evil-easymotion avy evil-escape evil-snipe
org-capture org-agenda org-refile evil-collection-magit-todos
magit-todos pcre2el rxt re-builder hl-todo async evil-collection-grep
grep evil-collection-compile compile orgit smartparens-org org-yt
org-element avl-tree generator org ob ob-tangle ob-ref ob-lob ob-table
ob-exp org-macro org-footnote org-src ob-comint org-pcomplete org-list
org-faces org-entities noutline outline org-version ob-emacs-lisp
ob-core ob-eval org-table ol org-keys oc org-cite org-compat org-macs
org-loaddefs find-func evil-collection-calendar cal-menu calendar
cal-loaddefs github-review ghub-graphql treepy gsexp ghub url-http
url-gw nsm url-auth gnutls deferred a evil-collection-magit
magit-autoloads magit-submodule magit-obsolete magit-popup magit-blame
magit-stash magit-reflog magit-bisect magit-push magit-pull magit-fetch
magit-clone magit-remote magit-commit magit-sequence magit-notes
magit-worktree magit-tag magit-merge magit-branch magit-reset
magit-files magit-refs magit-status magit magit-repos magit-apply
magit-wip magit-log which-func evil-collection-imenu imenu magit-diff
smerge-mode diff evil-collection-diff-mode diff-mode magit-core
magit-autorevert magit-margin magit-transient magit-process magit-mode
core-packages package browse-url url url-proxy url-privacy url-expand
url-methods url-history url-cookie url-domsuf url-util mailcap
url-handlers url-parse url-vars git-commit transient format-spec
evil-collection-log-edit log-edit message rmc puny evil-collection-dired
dired dired-loaddefs rfc822 mml mml-sec evil-collection-epa epa epg
epg-config gnus-util rmail rmail-loaddefs auth-source password-cache
json map text-property-search time-date mm-decode mm-bodies mm-encode
mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums mail-prsvr
mailabbrev mail-utils gmm-utils mailheader pcvs-util add-log magit-git
magit-section magit-utils crm eieio eieio-core eieio-loaddefs
with-editor doom-snippets doom-snippets-lib yasnippet
evil-collection-elisp-mode evil-collection-custom cus-edit cus-start
cus-load evil-collection-comint evil-collection annalist elisp-mode
savehist recentf tree-widget wid-edit server autorevert filenotify
dtrt-indent doom-themes-ext-org solaire-mode face-remap doom-one-theme
doom-themes doom-themes-base doom-modeline doom-modeline-segments
doom-modeline-env doom-modeline-core shrink-path rx f s all-the-icons
all-the-icons-faces data-material data-weathericons data-octicons
data-fileicons data-faicons data-alltheicons dash persp-mode let-alist
evil evil-integration evil-maps evil-commands reveal flyspell ispell
evil-jumps evil-command-window evil-types evil-search shell pcomplete
comint ansi-color evil-macros evil-repeat evil-states evil-core advice
evil-common windmove calc calc-loaddefs calc-macs thingatpt rect
evil-digraphs evil-vars ring derived edmacro kmacro core-editor
core-projects core-ui easy-mmode core-keybinds pp general cl-extra
help-mode seq byte-opt cl-seq use-package-core bytecomp byte-compile
cconv core-modules core core-lib pcase cl-macs gv cl-loaddefs cl-lib
subr-x iso-transl 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 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 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 button loaddefs faces cus-face macroexp files
window text-properties overlay sha1 md5 base64 format env code-pages
mule custom widget hashtable-print-readable backquote threads dbusbind
inotify lcms2 dynamic-setting system-font-setting font-render-setting
cairo x multi-tty make-network-process emacs)
Memory information:
((conses 16 587619 800008)
(symbols 48 57496 132)
(strings 32 143994 58963)
(string-bytes 1 4531494)
(vectors 16 62829)
(vector-slots 8 946917 532203)
(floats 8 953 1827)
(intervals 56 882 467)
(buffers 992 11))
[-- Attachment #2: persist-fix.patch --]
[-- Type: text/x-patch, Size: 753 bytes --]
diff --git a/persist.el b/persist.el
index 091e428..0bd3845 100644
--- a/persist.el
+++ b/persist.el
@@ -139,8 +139,15 @@ variables persist automatically when Emacs exits."
(persist--file-location symbol))))
(unless (file-exists-p dir-loc)
(mkdir dir-loc)))
+
(with-temp-buffer
- (print (symbol-value symbol) (current-buffer))
+ (let (print-level
+ print-length
+ print-quoted
+ (print-escape-control-characters t)
+ (print-escape-nonascii t)
+ (print-circle t))
+ (print (symbol-value symbol) (current-buffer)))
(write-region (point-min) (point-max)
(persist--file-location symbol)
nil 'quiet))))
^ permalink raw reply related [flat|nested] 2+ messages in thread
* bug#50246: 28.0.50; persist.el will incorrectly serialize a symbol's value... sometimes
2021-08-29 4:01 bug#50246: 28.0.50; persist.el will incorrectly serialize a symbol's value... sometimes Felipe Lema
@ 2021-08-29 19:39 ` Lars Ingebrigtsen
0 siblings, 0 replies; 2+ messages in thread
From: Lars Ingebrigtsen @ 2021-08-29 19:39 UTC (permalink / raw)
To: Felipe Lema; +Cc: 50246, Phillip Lord
Felipe Lema <felipelema@mortemale.org> writes:
> The `let` bindings were developed by experience and I'm already using
> this "safe serialization" config in another package I maintain (
> session-async.el ).
Thanks; looks good to me, so I've now applied it to the persist package
(but haven't bumped the version number in case Phillip has other changes
planned).
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2021-08-29 19:39 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-29 4:01 bug#50246: 28.0.50; persist.el will incorrectly serialize a symbol's value... sometimes Felipe Lema
2021-08-29 19:39 ` Lars Ingebrigtsen
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