bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Hilary J Holz]

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Sorry for the long subject line, but I'm unsure if this is one bug
or two. I've written an extensive post describing various test cases
and outcomes on my blog
(http://hholz.com/blog/2012/diagnosing-an-emacs-bug/).
I've listed the minimal case to reproduce the bug(s?) in this
bug report.

Starting with an empty .emacs file

1. M-x customize-apropos<RET>shell-switcher
2. set shell-switcher-new-shell-function to shell-switcher-make-shell
   set shell-switcher-mode to on
   click on Apply and Save

   the above steps create a .emacs containing exactly

   (custom-set-variables
    ;; custom-set-variables was added by Custom.
    ;; If you edit it by hand, you could mess it up, so be careful.
    ;; Your init file should contain only one such instance.
    ;; If there is more than one, they won't work right.
    '(shell-switcher-mode t)
    '(shell-switcher-new-shell-function (quote shell-switcher-make-shell))
    )

   (custom-set-faces
    ;; custom-set-faces was added by Custom.
    ;; If you edit it by hand, you could mess it up, so be careful.
    ;; Your init file should contain only one such instance.
    ;; If there is more than one, they won't work right.
    )

3. quit emacs. launch emacs (/Applications/Emacs.app/Contents/MacOS/Emacs)
4. M-x shell-switcher-new-shell (launches buffer in eshell)
5. M-x customize-apropos<RET>shell-switcher (flags both settings
   CHANGED outside Customize)
6. C-x C-f ~/.emacs (contents of .emacs is unchanged)


In GNU Emacs 24.1.50.2 (i386-apple-darwin11.4.0, NS apple-appkit-1138.47)
of 2012-05-15 on jessica-2.local
Windowing system distributor `Apple', version 10.3.1138
Configured using:
`configure '--prefix=/usr/local/Cellar/emacs/HEAD' '--without-dbus'
'--enable-locallisppath=/usr/local/share/emacs/site-lisp'
'--infodir=/usr/local/Cellar/emacs/HEAD/share/info/emacs' '--with-ns'
'--disable-ns-self-contained' 'CC=/usr/bin/clang' 'CFLAGS=-Os -w -pipe
-march=native -Qunused-arguments''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  tooltip-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

Recent input:
<help-echo> <help-echo> <escape> x s h e l l - s w 
i t c h e r - n e w - s h e l l <return> <escape> x 
c u s t o m i z e - a p r <tab> <return> s h e l l 
- s w i t c h e r <return> C-x C-f . e m a c s <return> 
<escape> x r e p o r t - e m a c s - b u g <return
>

Recent messages:
Loading em-hist...done
Loading em-ls...done
Loading em-prompt...done
Loading em-script...done
Loading em-term...done
Loading em-unix...done
Creating customization items...
Creating customization items ...done
Resetting customization items...done
Creating customization setup...done

Load-path shadows:
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/Users/hholz/.emacs.d/elpa/org-20120921/org-xoxo hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-xoxo
/Users/hholz/.emacs.d/elpa/org-20120921/org-wl hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-wl
/Users/hholz/.emacs.d/elpa/org-20120921/org-w3m hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-w3m
/Users/hholz/.emacs.d/elpa/org-20120921/org-vm hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-vm
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/Users/hholz/.emacs.d/elpa/org-20120921/org-taskjuggler hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-taskjuggler
/Users/hholz/.emacs.d/elpa/org-20120921/org-table hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-table
/Users/hholz/.emacs.d/elpa/org-20120921/org-src hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-src
/Users/hholz/.emacs.d/elpa/org-20120921/org-special-blocks hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-special-blocks
/Users/hholz/.emacs.d/elpa/org-20120921/org-rmail hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-rmail
/Users/hholz/.emacs.d/elpa/org-20120921/org-remember hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-remember
/Users/hholz/.emacs.d/elpa/org-20120921/org-publish hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-publish
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/Users/hholz/.emacs.d/elpa/org-20120921/org-plot hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-plot
/Users/hholz/.emacs.d/elpa/org-20120921/org-pcomplete hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-pcomplete
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/Users/hholz/.emacs.d/elpa/org-20120921/org-mks hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-mks
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/Users/hholz/.emacs.d/elpa/org-20120921/org-mew hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-mew
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/Users/hholz/.emacs.d/elpa/org-20120921/org-lparse hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-lparse
/Users/hholz/.emacs.d/elpa/org-20120921/org-list hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-list
/Users/hholz/.emacs.d/elpa/org-20120921/org-latex hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-latex
/Users/hholz/.emacs.d/elpa/org-20120921/org-jsinfo hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-jsinfo
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/Users/hholz/.emacs.d/elpa/org-20120921/org-install hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-install
/Users/hholz/.emacs.d/elpa/org-20120921/org-inlinetask hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-inlinetask
/Users/hholz/.emacs.d/elpa/org-20120921/org-info hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-info
/Users/hholz/.emacs.d/elpa/org-20120921/org-indent hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-indent
/Users/hholz/.emacs.d/elpa/org-20120921/org-id hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-id
/Users/hholz/.emacs.d/elpa/org-20120921/org-icalendar hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-icalendar
/Users/hholz/.emacs.d/elpa/org-20120921/org-html hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-html
/Users/hholz/.emacs.d/elpa/org-20120921/org-habit hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-habit
/Users/hholz/.emacs.d/elpa/org-20120921/org-gnus hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-gnus
/Users/hholz/.emacs.d/elpa/org-20120921/org-freemind hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-freemind
/Users/hholz/.emacs.d/elpa/org-20120921/org-footnote hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-footnote
/Users/hholz/.emacs.d/elpa/org-20120921/org-feed hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-feed
/Users/hholz/.emacs.d/elpa/org-20120921/org-faces hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-faces
/Users/hholz/.emacs.d/elpa/org-20120921/org-exp hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-exp
/Users/hholz/.emacs.d/elpa/org-20120921/org-exp-blocks hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-exp-blocks
/Users/hholz/.emacs.d/elpa/org-20120921/org-eshell hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-eshell
/Users/hholz/.emacs.d/elpa/org-20120921/org-entities hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-entities
/Users/hholz/.emacs.d/elpa/org-20120921/org-docview hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-docview
/Users/hholz/.emacs.d/elpa/org-20120921/org-docbook hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-docbook
/Users/hholz/.emacs.d/elpa/org-20120921/org-datetree hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-datetree
/Users/hholz/.emacs.d/elpa/org-20120921/org-ctags hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-ctags
/Users/hholz/.emacs.d/elpa/org-20120921/org-crypt hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-crypt
/Users/hholz/.emacs.d/elpa/org-20120921/org-compat hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-compat
/Users/hholz/.emacs.d/elpa/org-20120921/org-colview hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-colview
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/Users/hholz/.emacs.d/elpa/org-20120921/org-capture hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-capture
/Users/hholz/.emacs.d/elpa/org-20120921/org-bibtex hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-bibtex
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/Users/hholz/.emacs.d/elpa/org-20120921/org-bbdb hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-bbdb
/Users/hholz/.emacs.d/elpa/org-20120921/org-attach hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-attach
/Users/hholz/.emacs.d/elpa/org-20120921/org-ascii hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-ascii
/Users/hholz/.emacs.d/elpa/org-20120921/org-archive hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-archive
/Users/hholz/.emacs.d/elpa/org-20120921/org-agenda hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/org-agenda
/Users/hholz/.emacs.d/elpa/org-20120921/ob hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob
/Users/hholz/.emacs.d/elpa/org-20120921/ob-tangle hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-tangle
/Users/hholz/.emacs.d/elpa/org-20120921/ob-table hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-table
/Users/hholz/.emacs.d/elpa/org-20120921/ob-sqlite hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-sqlite
/Users/hholz/.emacs.d/elpa/org-20120921/ob-sql hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-sql
/Users/hholz/.emacs.d/elpa/org-20120921/ob-shen hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-shen
/Users/hholz/.emacs.d/elpa/org-20120921/ob-sh hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-sh
/Users/hholz/.emacs.d/elpa/org-20120921/ob-screen hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-screen
/Users/hholz/.emacs.d/elpa/org-20120921/ob-scheme hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-scheme
/Users/hholz/.emacs.d/elpa/org-20120921/ob-sass hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-sass
/Users/hholz/.emacs.d/elpa/org-20120921/ob-ruby hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-ruby
/Users/hholz/.emacs.d/elpa/org-20120921/ob-ref hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-ref
/Users/hholz/.emacs.d/elpa/org-20120921/ob-R hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-R
/Users/hholz/.emacs.d/elpa/org-20120921/ob-python hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-python
/Users/hholz/.emacs.d/elpa/org-20120921/ob-plantuml hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-plantuml
/Users/hholz/.emacs.d/elpa/org-20120921/ob-picolisp hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-picolisp
/Users/hholz/.emacs.d/elpa/org-20120921/ob-perl hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-perl
/Users/hholz/.emacs.d/elpa/org-20120921/ob-org hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-org
/Users/hholz/.emacs.d/elpa/org-20120921/ob-octave hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-octave
/Users/hholz/.emacs.d/elpa/org-20120921/ob-ocaml hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-ocaml
/Users/hholz/.emacs.d/elpa/org-20120921/ob-mscgen hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-mscgen
/Users/hholz/.emacs.d/elpa/org-20120921/ob-maxima hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-maxima
/Users/hholz/.emacs.d/elpa/org-20120921/ob-matlab hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-matlab
/Users/hholz/.emacs.d/elpa/org-20120921/ob-lob hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-lob
/Users/hholz/.emacs.d/elpa/org-20120921/ob-lisp hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-lisp
/Users/hholz/.emacs.d/elpa/org-20120921/ob-lilypond hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-lilypond
/Users/hholz/.emacs.d/elpa/org-20120921/ob-ledger hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-ledger
/Users/hholz/.emacs.d/elpa/org-20120921/ob-latex hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-latex
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/Users/hholz/.emacs.d/elpa/org-20120921/ob-clojure hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-clojure
/Users/hholz/.emacs.d/elpa/org-20120921/ob-calc hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-calc
/Users/hholz/.emacs.d/elpa/org-20120921/ob-C hides /usr/local/Cellar/emacs/HEAD/share/emacs/24.1.50/lisp/org/ob-C
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mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
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esh-ext esh-proc esh-arg eldoc esh-groups eshell esh-module esh-mode
esh-util shell-switcher rswitcher auctex-autoloads tex-site
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feature-mode-autoloads findr-autoloads flymake-autoloads
flymake-coffee-autoloads flymake-css-autoloads flymake-haml-autoloads
flymake-jslint-autoloads flymake-php-autoloads flymake-ruby-autoloads
flymake-sass-autoloads flymake-shell-autoloads furl-autoloads
gist-autoloads gh-autoloads eieio warnings advice help-fns
advice-preload byte-opt bytecomp byte-compile cconv macroexp inversion
cl haml-mode-autoloads htmlize-autoloads httpcode-autoloads
ido-ubiquitous-autoloads ido-yes-or-no-autoloads inf-ruby-autoloads
inflections-autoloads load-theme-buffer-local-autoloads logito-autoloads
lorem-ipsum-autoloads magithub-autoloads finder-inf
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nav-autoloads org-magit-autoloads org-autoloads info easymenu
magit-autoloads pcache-autoloads eieio-autoloads popup-autoloads
rainbow-mode-autoloads rspec-mode-autoloads rvm-autoloads
scss-mode-autoloads shell-switcher-autoloads edmacro kmacro
slim-mode-autoloads smart-tab-autoloads smex-autoloads
yaml-mode-autoloads yasnippet-autoloads zenburn-theme-autoloads package
time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel ns-win
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev
minibuffer loaddefs button faces cus-face files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process ns multi-tty
emacs)


----
Hilary J Holz
full stack web developer
hilary@hholz.com
http://hholz.com/
http://linkedin.com/in/hilaryholz


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bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Glenn Morris]

Hilary J Holz wrote:

> 1. M-x customize-apropos<RET>shell-switcher

There is no "shell-switcher" in Emacs.
Most probably, this is a bug in whatever package provides that feature,
and should be reported to whoever maintains it.

> In GNU Emacs 24.1.50.2 (i386-apple-darwin11.4.0, NS apple-appkit-1138.47)
> of 2012-05-15 on jessica-2.local

This is a rather old version of the Emacs trunk.

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Glenn Morris]

I downloaded the latest https://github.com/DamienCassou/shell-switcher
and it works fine for me with both Emacs 24.2 and the current trunk.

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Hilary J Holz]

Cool. That's useful info. 

How do I tell the init process to source from github rather than one of the repos? A pointer to the relevant section of the manual (or the relevant manual) would be deeply appreciated. Downloading manually isn't scalable :( 

On Oct 5, 2012, at 2:54 PM, Glenn Morris wrote:

> 
> I downloaded the latest https://github.com/DamienCassou/shell-switcher
> and it works fine for me with both Emacs 24.2 and the current trunk.
> 

----
Hilary J Holz
full stack web developer
hilary@hholz.com
http://hholz.com/
http://linkedin.com/in/hilaryholz

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Glenn Morris]

I'm closing this because I do not think there is an Emacs bug here.
Please feel free to send more info if you think there is.
We would need a recipe starting from an empty .emacs file that
shows how to reproduce the problem.

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Hilary J Holz]

On Oct 5, 2012, at 2:46 PM, Glenn Morris wrote:

> Hilary J Holz wrote:
> 
>> 1. M-x customize-apropos<RET>shell-switcher
> 
> There is no "shell-switcher" in Emacs.
> Most probably, this is a bug in whatever package provides that feature,
> and should be reported to whoever maintains it.
> 

I would have done that if the problem had been local to the package. However, there remains the issue with CHANGED outside Customize. 

My decision to report it to emacs was very much shaped by http://stackoverflow.com/questions/10042639/what-does-saved-and-set-mismatch-and-in-particular-the-mismatch-part-me. In that q/a, the same flag was identified as being problematic, part of a two bug interaction that is rather reminiscent of this one.

In any case, I have long since found a workaround. The extra work diagnosing and reporting it was purely a community contribution. I can only hope someone finds it useful.

>> In GNU Emacs 24.1.50.2 (i386-apple-darwin11.4.0, NS apple-appkit-1138.47)
>> of 2012-05-15 on jessica-2.local
> 
> This is a rather old version of the Emacs trunk.
> 


ROFL! Take it up with the homebrew folks, it's their build.

Hilz

----
Hilary J Holz
full stack web developer
hilary@hholz.com
http://hholz.com/
http://linkedin.com/in/hilaryholz

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Glenn Morris]

Hilary J Holz wrote:

> I would have done that if the problem had been local to the package.
> However, there remains the issue with CHANGED outside Customize.

The problem is local to the package if it only occurs with variables
from that package. Can you demonstrate this problem with any standard
Emacs custom option?

It's trivial to make such a bug occur. Eg:

(defvar shell-switcher-new-shell-function 57)

(defcustom shell-switcher-new-shell-function 'shell-switcher-make-eshell
  "..."
  :group 'shell-switcher)

Evaluating that will give a "CHANGED outside Customize." message.

OK, that's an artificial example, but similar things can easily happen
for example with packages split into multiple source files that
accidentally define variables more than once. It's a bug in the package,
not in Custom.

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Hilary J Holz]

Ooo… Thanks, your example is very helpful.

Is there a way to have the init process source shell-switcher from github rather
than a repo? Downloading it manually isn't scalable :(

On Oct 5, 2012, at 3:16 PM, Glenn Morris wrote:

> Hilary J Holz wrote:
> 
>> I would have done that if the problem had been local to the package.
>> However, there remains the issue with CHANGED outside Customize.
> 
> The problem is local to the package if it only occurs with variables
> from that package. Can you demonstrate this problem with any standard
> Emacs custom option?
> 
> It's trivial to make such a bug occur. Eg:
> 
> (defvar shell-switcher-new-shell-function 57)
> 
> (defcustom shell-switcher-new-shell-function 'shell-switcher-make-eshell
>  "..."
>  :group 'shell-switcher)
> 
> Evaluating that will give a "CHANGED outside Customize." message.
> 
> OK, that's an artificial example, but similar things can easily happen
> for example with packages split into multiple source files that
> accidentally define variables more than once. It's a bug in the package,
> not in Custom.
> 

----
Hilary J Holz
full stack web developer
hilary@hholz.com
http://hholz.com/
http://linkedin.com/in/hilaryholz

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Stefan Monnier]

> 4. M-x shell-switcher-new-shell (launches buffer in eshell)
> 5. M-x customize-apropos<RET>shell-switcher (flags both settings
>    CHANGED outside Customize)
> 6. C-x C-f ~/.emacs (contents of .emacs is unchanged)

Shell-switcher is not part of Emacs, so "empty .emacs" doesn't sound
quite right.  I suspect the problem is somewhere in the local
modifications you have.

Of course, it can still be due to a bug in Emacs's Customize code, but
we'd need some recipe starting from a really empty local customization
(which would hence explicitly load shell-switcher.el).


        Stefan

bug#12582: 24.1.50; customize settings not persisting across sessions + CHANGED outside Customize flag issue

[Hilary J Holz]

That was one of my realizations in this process; that I've hit the point at which I need to get up to speed on BDD for emacs.

That way I could spawn a pristine copy to start with, not to mention have emacs to keep notes with while working on the problem.

Any favorite references for getting up to speed in the area? I'm fluent in BDD in other platforms.

Hilz

On Oct 5, 2012, at 3:17 PM, Stefan Monnier wrote:

>> 4. M-x shell-switcher-new-shell (launches buffer in eshell)
>> 5. M-x customize-apropos<RET>shell-switcher (flags both settings
>>   CHANGED outside Customize)
>> 6. C-x C-f ~/.emacs (contents of .emacs is unchanged)
> 
> Shell-switcher is not part of Emacs, so "empty .emacs" doesn't sound
> quite right.  I suspect the problem is somewhere in the local
> modifications you have.
> 
> Of course, it can still be due to a bug in Emacs's Customize code, but
> we'd need some recipe starting from a really empty local customization
> (which would hence explicitly load shell-switcher.el).
> 
> 
>        Stefan
> 

----
Hilary J Holz
full stack web developer
hilary@hholz.com
http://hholz.com/
http://linkedin.com/in/hilaryholz