xml - 在emacs XML模式下，如何格式化XML模式文件？

我想自动格式化一个xml模式定义文件。所有正常的漂亮打印材料：结束元素后换行，缩进。我已经看到了this answer和this elisp，这给了我基本的知识。不过，除了这些之外，我还希望在尖括号内的属性之间换行。
像这样。之前：

<s:schema elementFormDefault="qualified" targetNamespace="urn:Cheeso.2009.05.Finance/TransferObject/TransactionDetail/" xmlns:tns="urn:Cheeso.2009.05.Finance/TransferObject/TransactionDetail/"  xmlns:detail="urn:Cheeso.2009.05.Finance/TransferObject/TransactionDetail/"  xmlns:to="urn:Cheeso.2009.05.Finance/TransferObject/"  xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:address="urn:Cheeso.2009.05.Finance/TransferObject/Address/" xmlns:caller="urn:Cheeso.2009.05.Finance/TransferObject/Caller/" xmlns:gwy="urn:Cheeso.2009.05.Finance/TransferObject/Gateway/" xmlns:tender="urn:Cheeso.2009.05.Finance/TransferObject/Tender/"  >
 ...
</s:schema>

后：

<s:schema
    elementFormDefault = "qualified"
    targetNamespace    = "urn:Cheeso.2009.05.Finance/TransferObject/TransactionDetail/"
    xmlns:tns          = "urn:Cheeso.2009.05.Finance/TransferObject/TransactionDetail/"
    xmlns:detail       = "urn:Cheeso.2009.05.Finance/TransferObject/TransactionDetail/"
    xmlns:to           = "urn:Cheeso.2009.05.Finance/TransferObject/"
    xmlns:s            = "http://www.w3.org/2001/XMLSchema"
    xmlns:address      = "urn:Cheeso.2009.05.Finance/TransferObject/Address/"
    xmlns:caller       = "urn:Cheeso.2009.05.Finance/TransferObject/Caller/"
    xmlns:gwy          = "urn:Cheeso.2009.05.Finance/TransferObject/Gateway/"
    xmlns:tender       = "urn:Cheeso.2009.05.Finance/TransferObject/Tender/"  >
 ...
</s:schema>

有人能给我推荐一个能把=？

最佳答案

尝试以下方法：

(defun prettyprint-xml ()
  (interactive)
  (goto-char (point-min))
  (while (search-forward "=" (point-max) t)
    (search-forward "\"")
    (search-forward "\"")
    (forward-char)
    (newline-and-indent))
  (align-regexp (point-min) (point-max) "\#"))

它可能不完全符合你的要求（我只是把它编码了），但它看起来应该适合你展示的案例。