1. Remove all numbers and letters 1, the shortcut key "Ctrl + h" brings up the dialog box Alternatively, 2, the contents of the box to find fill "[0-9.A-Za-z]" 3, check the "wildcard" 4, replace, do not fill empty box. 5, click "Replace All" button.
2, Notepad ++ editor, which includes many editing options, edit -> line operation -> Remove blank lines (including blank character).
3, Notepad ++ find and replace support regular replacement.
Remove trailing spaces and blank lines: Press CTRL + F Select Regular Expressions - Find objectives: \ s + $ Replace empty. \ S mean match any whitespace characters, including tabs, spaces, page breaks; equivalent to [\ f \ n \ r \ t \ v].
Removal of line space: Press CTRL + H to select a regular expression - Find objectives: ^ \ s + Replace empty.
