在DOS/Unix/Mac字符格式下，使用兼容Perl语言的正则表达式来删除空白行 。
可以在工具栏里依次点击“高级”＝》“配置”＝》“正则表达式”或者在“查找/替换”对话框里直接勾选“正则表达式”来使用正则功能。
查找："^/r?/n?$ " (不含引号，斜体部分。)
替换：“”
希望能给大家节约时间。
+++++++++++++++ 华丽的分割线 ++++++++++++++++++++++++++++++++++++
To delete blank lines in DOS/Unix/Mac formatted-files, use the following Perl-compatible regular expression. You can enable Perl-compatible regular expressions under Advanced -> Configuration -> Search -> Regular Expression Engine or directly in the replace dialog after clicking on the Advanced button in the lower pane of the dialog.
Replace: "^/r?/n?$" (without the quotes) With "" (without the quotes - i.e. nothing).
Earlier versions of UltraEdit:
To delete blank lines with DOS line terminators you can use an UltraEdit-style regular expression replace as follows:
Replace: "^p$" (without the quotes) With "" (without the quotes - i.e. nothing).
Run this replace until every blank line is deleted.
原文链接地址：http://www.ultraedit.com/support/faq.html
