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  This script tries to automatically detect and set file encoding when
  opening a file in Vim. It does this in several possible ways (according
  to the configuration) in this order (when a method fails, it tries
  the following one):
    (1) detection of BOM (byte-order-mark) at the beginning of the file,
        only for some multibyte encodings
    (2) HTML way of encoding detection (via <meta> tag), only for HTML based
        file types
    (3) XML way of encoding detection (via <?xml ... ?> declaration), only
        for XML based file types
    (4) CSS way of encoding detection (via @chardet 'at-rule'), only for
        CSS files
    (5) checks whether the encoding is specified in a comment (like
        '# Encoding: latin2'), for all file types
    (6) tries to detect the encoding via specified external program
        (the default one is enca), for all file types

  If the autodetection fails, it's up to Vim (and your configuration)
  to set the encoding.

  Configuration options for this plugin (you can set them in your $HOME/.vimrc):
   - g:autofenc_enable (0 or 1, default 1)
       Enables/disables this plugin.
   - g:autofenc_max_file_size (number >= 0, default 10485760)
       If the size of a file is higher than this value (in bytes), then
       the autodetection will not be performed.
   - g:autofenc_disable_for_files_matching (regular expression, see below)
       If the file (with complete path) matches this regular expression,
       then the autodetection will not be performed. It is by default set
       to disable autodetection for non-local files (e.g. accessed via ftp,
       scp etc., because the script can't handle some kind of autodetection
       for these files). The regular expression is matched case-sensitively.
   - g:autofenc_disable_for_file_types (list of strings, default [])
       If the file type matches some of the filetypes specified in this list,
       then the autodetection will not be performed. Comparison is done
   - g:autofenc_autodetect_bom (0 or 1, default 1)
       Enables/disables detection of encoding by BOM.
   - g:autofenc_autodetect_html (0 or 1, default 1)
       Enables/disables detection of encoding for HTML based documents.
   - g:autofenc_autodetect_xml (0 or 1, default 1)
       Enables/disables detection of encoding for XML based documents.
   - g:autofenc_autodetect_css (0 or 1, default 1)
       Enables/disables detection of encoding for CSS documents.
   - g:autofenc_autodetect_comment (0 or 1, default 1)
       Enables/disables detection of encoding in comments.
   - g:autofenc_autodetect_comment_num_of_lines (number >= 0, default 5)
       How many lines from the beginning and from the end of the file should
       be searched for the possible encoding declaration
   - g:autofenc_autodetect_ext_prog (0 or 1, default 1)
       Enables/disables detection of encoding via external program
       (see additional settings below).
   - g:autofenc_ext_prog_path (string, default 'enca')
       Path to the external program. It can be either relative or absolute.
       The external program can take any number of arguments, but
       the last one must be a path to the file for which the encoding
       is to be detected (it will be supplied by this plugin).
       Output of the program must be the name of encoding in which the file
       is saved (string on a single line).
   - g:autofenc_ext_prog_args (string, default '-i -L czech')
       Additional program arguments (can be none, i.e. '').
   - g:autofenc_ext_prog_unknown_fenc (string, default '???')
       If the output of the external program is this string, then it means
       that the file encoding was not detected successfully. The string must
       be case-sensitive.

  - filetype plugin must be enabled (a line like 'filetype plugin on' must
    be in your $HOME/.vimrc [*nix] or %UserProfile%\_vimrc [MS Windows])

Installation Details:
  Put this file into your $HOME/.vim/plugin directory [*nix]
  or %UserProfile%\vimfiles\plugin folder [MS Windows].

 This script is by all means NOT perfect, but it works for me and suits my
 needs very well, so it might be also useful for you. Your feedback,
 opinion, suggestions, bug reports, patches, simply anything you have
 to say is welcomed!

 There are two similar plugins to this one, so if you don't like this one,
 you can test these:
   - FencView.vim (
       Mainly supports detection of encodings for asian languages.
   - MultiEnc.vim (
       Obsolete, merged with the previous one.
 Let me know if there are others and I'll add them here.

  1.1.1 (2009-10-03)
    - Fixed the comment encoding detection function (the encoding was not
      detected if there were some alphanumeric characters before
      the "encoding" string, like in "# vim:fileencoding=<encoding-name>").

  1.1 (2009-08-16)
    - Added three configuration possibilites to disable autodetection for
      specific files (based on file size, file type and file path).
      See script description for more info.

  1.0.2 (2009-08-11)
    - Fixed the XML encoding detection function.
    - Minor code and documentation fixes.

  1.0.1 (2009-08-02)
    - Encoding autodetection is now performed only if the opened file
      exists (is stored somewhere). So, for example, the autodetection
      is now not performed when a new file is opened.
    - Correctly works with .viminfo, where the last cursor position
      in the file is stored when exiting the file. In the previous version
      of this script, this information was sometimes ignored and the cursor
      was initially on the very last line in a file. If the user does not
      use this .viminfo feature (or he does not use .viminfo at all),
      then the cursor will be initially placed on the very first line.
    - (Hopefully) fixed the implementation of the function which sets
      the detected encoding.

  1.0 (2009-07-26)
    - Initial release version of this script.

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