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Bug in mule.el/sgml-xml-auto-coding-function


From: Jirka Kosek
Subject: Bug in mule.el/sgml-xml-auto-coding-function
Date: Thu, 28 Apr 2005 13:48:15 +0200
User-agent: Mozilla Thunderbird 0.9 (Windows/20041103)

Hi,

function sgml-xml-auto-coding-function tries to detect encoding of XML file. XML specification allows encoding name to be surrounded by quotes or apostrophes. Current code expect only quotes so it won't detect encoding if specified as:

<?xml version="1.0" encoding='windows-1250'?>

The following function has corrected RE in order to deal with both delimiters.

(defun sgml-xml-auto-coding-function (size)
  "Determine whether the buffer is XML, and if so, its encoding.
This function is intended to be added to `auto-coding-functions'."
  (setq size (+ (point) size))
  (when (re-search-forward "\\`[[:space:]\n]*<\\?xml" size t)
    (let ((end (save-excursion
                 ;; This is a hack.
                 (re-search-forward "[\"']\\s-*\\?>" size t))))
      (when end
        (if (re-search-forward "encoding=[\"']\\(.+?\\)[\"']" end t)
            (let* ((match (match-string 1))
                   (sym (intern (downcase match))))
              (if (coding-system-p sym)
                  sym
                (message "Warning: unknown coding system \"%s\"" match)
                nil))
          'utf-8)))))


TIA,

                                Jirka

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