Fix search for GNU Emacs 23 (no assert).

indexing.

.gitignore

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+*.elc
+*~

README.org

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-* View Large File
+* View Large Files
 
-An Emacs mode that allows viewing files in chunks.  This is a fork
-that builds on the GNU ELPA vlf.el.
+An Emacs mode that allows viewing, editing and searching in large
+files in chunks.  Batch size can be adjusted on the fly and bounds the
+memory that is to be used for operations on the file.
+
+This is development version of the GNU ELPA [[http://elpa.gnu.org/packages/vlf][vlf.el]] package.  Here's
+what it does in a nutshell:
+
+- regular expression search on whole file (in constant memory
+  determined by current batch size)
+- chunk editing (if size has changed, saving is done in constant
+  memory determined by current batch size)
+- occur like indexing
+- options to jump to beginning, end or arbitrary file chunk
+- ability to jump/insert given number of batches at once
+- newly added content is acknowledged if file has changed size
+  meanwhile
+- automatic scrolling of batches
+- VLF is added as an option when opening large files
+
+GNU Emacs 23 and 24 are supported.
+
+* Overview and tips
+
+M-x vlf PATH-TO-FILE
+
+** Unicode
+
+Emacs' Unicode support is leveraged so you'll not see bare bytes but
+characters decoded as if file is normally opened.  This holds for
+editing, search and indexing.
+
+** 32-bit GNU Emacs
+
+Regular Emacs integers are used, so if you use 32-bit Emacs without
+bignum support and have really huge file (with size beyond the maximum
+integer value), VLF will probably not quite work.
+
+** Memory control
+
+*vlf-batch-size* bounds the memory used for all operations.
+
+** Special mode
+
+VLF is derived from special-mode and keeps all its properties.  For
+example you can directly press digits to enter prefix arguments.
+
+** Change major mode
+
+You can change major mode to whatever you like (for example
+hexl-mode).  Saving will insert contents as intended.  You can return
+to *vlf-mode* too.
+
+* Detail usage
+
+** Control batch size
+
+*+* and *-* control current batch size by factors of 2.
+
+You can also set by hand local variable *vlf-batch-size* and then
+refresh with *g*.
+
+** Move around
+
+*M-PgUp* and *M-PgDn* move chunk by chunk.  With positive prefix
+argument they move prefix number of batches.  With negative - append
+prefix number of batches.
+
+*[* and *]* take you to the beginning and end of file respectively.
+
+*j* jumps to given chunk.  To see where you are in file and how many chunks
+there are (using the current batch size), look at the bracketed part
+of the buffer name, batch size is also there - at the end.
+
+** Search whole file
+
+*s* and *r* search forward and backward respectively over the whole
+file.  This is done chunk by chunk so if you have really huge file -
+you'd better set somewhat bigger batch size beforehand.
+
+** Occur over whole file
+
+*o* builds index for given regular expression just like occur-mode.
+It does this chunk by chunk over the whole file.  Note that even if
+you prematurely stop it with *C-g*, it will still show index of what's
+found so far.
+
+** Jump to line
+
+*l* jumps to given line in file.  This is done by searching from the
+beginning, so again the bigger current batch size, the quicker.  With
+negative argument, lines are counted from the end of file.
+
+** Edit
+
+*e* enters VLF in edit mode.  If editing doesn't change size of
+the chunk, only this chunk is saved.  Otherwise the remaining part of
+the file is adjusted chunk by chunk, so again you'd better have bigger
+current batch size.  If chunk has been expanded the memory used is
+
+#+BEGIN_EXAMPLE
+(batch size + difference to the original chunk size) x 2
+#+END_EXAMPLE

vlfi.el

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+;;; vlfi.el --- Obsolete - install vlf instead!
+
+;; Copyright (C) 2006, 2012, 2013  Free Software Foundation, Inc.
+
+;; Version: 0.9.1.1
+;; Keywords: large files, utilities
+;; Maintainer: Andrey Kotlarski <m00naticus@gmail.com>
+;; Authors: 2006 Mathias Dahl <mathias.dahl@gmail.com>
+;;          2012 Sam Steingold <sds@gnu.org>
+;;          2013 Andrey Kotlarski <m00naticus@gmail.com>
+;; URL: https://github.com/m00natic/vlfi
+
+;; This file is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; This file is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; This package used to provide the M-x vlfi command, which visited
+;; part of a large file without loading the entire file.
+;; However, it has been merged back to the vlf package,
+;; so use that instead.
+
+;;; Code:
+
+;;;###autoload
+(error
+ "vlfi package has been merged with vlf: please install that instead")
+
+;;; vlfi.el ends here