bug#18530: 24.3; Emacs unable to handle very large lines

[Amit Barve]

Hi,

I am a daily user of emacs. I am a big fan and supporter of emacs.
First of all I would like thank all developers of emacs for such a
wonderful editor!

I would like to report a bug in emacs.

Here goes the description of the bug:
Whenever I open a text file which has a very big line(a continuous line)
without a newline inside it (let's say first 1000000 space
separated numbers) then emacs is just unable to handle it.
Emacs is unable to show line count of buffer, instead it shows 'L??'
and general commands like 'move to end of file', 'move to start of line'
take a lot of time (something like a complete minute) to work.I tried by removing
everything from my '.emacs' file but that didn't help!

I really want to use emacs and I can't even think of using some
other editor!

I am on 64 bit ubuntu and using emacs 24.3.1

Is there any way so that I can make emacs to handle such big files?

P.S: As I don't have a proper mail server configured on my system
I am just copying the content from 'M-x report-emacs-bug' here!

Thank you,
Amit Barve


In GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7)
 of 2014-03-07 on lamiak, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11501000
System Description:    Ubuntu 14.04.1 LTS

Configured using:
 `configure '--build' 'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var/lib' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 '--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp'
 '--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes'
 '--with-x-toolkit=gtk3' '--with-toolkit-scroll-bars'
 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector
 --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall'
 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro'
 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
  value of $LANG: en_IN
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: iso-latin-1-unix
  default enable-multibyte-characters: t

Major mode: C/l

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
  abbrev-mode: t

Recent input:
C-x 1 M-x e <backspace> r e p <tab> o <tab> r t <tab>
<return>

Recent messages:
Loading 00debian-vars...done
Loading /etc/emacs/site-start.d/50dictionaries-common.el (source)...
Loading /var/cache/dictionaries-common/emacsen-ispell-dicts.el (source)...
Error while loading 50dictionaries-common: Symbol's value as variable is void: debian-aspell-only-dictionary-alist
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading cc-langs...done
Loading vc-git...done
Making completion list... [2 times]

Load-path shadows:
/usr/share/emacs/24.3/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup

Features:
(shadow sort gnus-util mail-extr emacsbug message cl-macs gv format-spec
rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils help-mode vc-git cc-langs cl cl-lib
cc-mode cc-fonts easymenu cc-guess cc-menus cc-cmds cc-styles cc-align
cc-engine cc-vars cc-defs time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd 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 macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
make-network-process dbusbind dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)