bug#12437: 24.2; Edits to buffer does not get written to the file (Issue Does not happen in 23.x version)

[Vishwajith Singh]

I found another user complaining about the same issue here -
http://forums.gentoo.org/viewtopic-p-7139116.html

But I am unable to figure out whether any hooks are getting executed
when I do a save-buffer


On Thu, Sep 13, 2012 at 3:51 PM, Vishwajith Singh <vnsblore@gmail.com> wrote:
> Is is possible that emacs 24.2 is not honoring the umask setting...?
>
>
>
> On Thu, Sep 13, 2012 at 3:17 PM, Vishwajith Singh <vnsblore@gmail.com> wrote:
>> Issue: 24.2; Edits to buffer does not get written to the file whereas
>> the same file can be edited in emacs-23.3 without issues.
>>
>> Here's what happens -
>>
>> emacs 24.2
>> ==========
>> 1) Open a file with permissions "-rwxrwxrwx".
>>         The modeline shows "---" indicating that the file is writable.
>> 2) Edit the file
>>         The modeline show "**-"
>> 3) Save the file...
>>         The modebuffer shows "Saving file..."
>>         The modeline still shows "**-"
>> 3)  Now try quitting the buffer.
>>        The modeline shows "Changes made to the file, quit anyway..."
>>    Strange message since the changes were saved in step 2.
>>    If you quit, the changes  are lost.
>>
>> emacs 23.x
>> ==========
>> 1) OPen the same file in older emacs 23.X version and go thourgh the
>> same steps. No issues and the changes are savsed and the buffer can be
>> quit...
>>
>> Why is this happening in 24.2?
>>
>>
>> ==================================================================
>> In GNU Emacs 24.2.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars)
>>  of 2012-09-11 on lca-700s
>> Windowing system distributor `Hummingbird - Open Text', version 11.0.13800
>> Configured using:
>>  `configure '--prefix=/usr/local/emacs-24.2''
>>
>> 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: C
>>   value of $XMODIFIERS: nil
>>   locale-coding-system: nil
>>   default enable-multibyte-characters: t
>>
>> Major mode: Shell
>>
>> Minor modes in effect:
>>   dirtrack-mode: t
>>   show-paren-mode: t
>>   shell-dirtrack-mode: t
>>   recentf-mode: t
>>   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
>>   column-number-mode: t
>>   line-number-mode: t
>>   transient-mark-mode: t
>>
>> Recent input:
>> <left> <left> <left> <left> <left> <left> <left> <left>
>> <left> <left> <left> <left> <left> <left> <left> <left>
>> <backspace> 9 C-s C-s C-s C-s C-x C-s M-k C-g C-x C-s
>> M-k y l s SPC - l SPC <return> c d SPC - <return> l
>> s SPC - l SPC <return> c d SPC - <return> C-x <escape>
>> <escape> <return> <return> C-x C-s M-k y l s SPC -
>> l SPC h s <tab> s <tab> <return> l s SPC - a l <return>
>> C-x C-f h s _ a s <tab> <return> C-s C-s C-s <left>
>> <left> <left> <left> <left> <left> <left> <left> <left>
>> <left> <left> <left> <left> <left> <left> <left> <left>
>> <left> <left> <left> <left> <left> <left> <left> <left>
>> <left> <backspace> 9 C-x C-s M-k y <help-echo> <help-echo>
>> <down-mouse-1> <mouse-1> <down-mouse-1> <mouse-1> <down-mouse-5>
>> <mouse-5> <double-down-mouse-5> <double-mouse-5> <triple-down-mouse-5>
>> <triple-mouse-5> <triple-down-mouse-5> <triple-mouse-5>
>> <triple-down-mouse-5> <triple-mouse-5> <down-mouse-5>
>> <mouse-5> <down-mouse-1> <mouse-1> w h i c h SPC e
>> m a c s <return> n e d i t SPC h s <tab> a a <backspace>
>> <tab> <return> <down-mouse-1> <mouse-1> C-s C-s C-x
>> C-f M-p <return> C-s C-s C-s C-s C-x C-s <return> <backspace>
>> <return> C-x C-s M-k <backspace> <down-mouse-1> <mouse-1>
>> <down-mouse-1> <mouse-movement> <mouse-1> M-k y <f11>
>> <f12> e <backspace> a SPC | SPC g r e p SPC e m a c
>> s <return> <down-mouse-1> <mouse-movement> <mouse-1>
>> $ E M A S <backspace> C S _ O L D <return> <down-mouse-1>
>> <mouse-1> M-x r e p o <tab> r t <tab> - <tab> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <tab> <tab> <tab>
>> <tab> <tab> <tab> <tab> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <backspace> <backspace> <backspace> <backspace> <backspace>
>> <tab> <tab> <return>
>>
>> Recent messages:
>> Buffer hs_async_scheduler.v modified; kill anyway? (y or n)  y
>> scroll-up: End of buffer
>> Mark saved where search started [2 times]
>> (No changes need to be saved)
>> Saving file 
>> /proj/sycmr0/wa/vsingh/tmp/vault/ip_design/usb3_host_core/August_6_2012/mrvl_host_vpp/asic_release/src/xhci/transaction_scheduler/hs_async_scheduler.v...
>> Buffer hs_async_scheduler.v modified; kill anyway? (y or n)  n
>> Buffer hs_async_scheduler.v modified; kill anyway? (y or n)  y
>> Mark set
>> /proj/sycmr0/wa/vsingh/tmp/vault/ip_design/usb3_host_core/August_6_2012/mrvl_host_vpp/asic_release/src/xhci/transaction_scheduler
>> Making completion list... [2 times]
>>
>> Load-path shadows:
>> None found.
>>
>> Features:
>> (shadow mail-extr emacsbug message rfc822 mml mml-sec mm-decode
>> mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
>> sendmail rfc2047 rfc2045 ietf-drums mail-utils executable tabify
>> verilog-mode skeleton compile diff ffap misearch multi-isearch make-mode
>> help-mode view pcmpl-unix autoinsert sunrise-commander tramp
>> tramp-compat auth-source eieio assoc gnus-util mm-util mail-prsvr
>> password-cache format-spec tramp-loaddefs esh-var esh-io esh-cmd esh-ext
>> esh-proc esh-arg eldoc esh-groups eshell esh-util esh-module esh-mode
>> dired-aux desktop term ehelp electric sort hl-line find-dired disp-table
>> enriched dired-x dired derived jka-compr protbuf dirtrack vc-hg linum
>> paren cus-start cus-load ediff-trees ediff-merg ediff-diff ediff-wind
>> ediff-help ediff-util ediff-mult ediff-init ediff breadcrumb byte-opt
>> warnings bytecomp byte-compile cconv macroexp shell-command shell
>> pcomplete comint regexp-opt ansi-color ring column-marker color-theme cl
>> recentf tree-widget wid-edit easymenu tabbar easy-mmode hide-lines
>> hide-region advice help-fns advice-preload setnu ibs edmacro kmacro
>> time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
>> tool-bar dnd fontset image fringe 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 dynamic-setting font-render-setting x-toolkit x
>> multi-tty emacs)