Delete all lines starting with or in Notepad

Question

Using Notepad    how do I remove all lines starting with   or

User · Answer

As others have noted  in Notepad   6 0 and later  it is possible to use the  Replace  feature to delete all lines that begin with     or       Tao provides a regular expression that serves as a starting point  but it does not account for white-space that may exist before the     or     character on a given line  For example  lines that begin with     or     but are  tabbed-in  will not be deleted when using Tao s regular expression           r n   Tao s regular expression does not account for the caveat mentioned in BoltClock s answer  either  variances in newline characters across systems   An improvement is to use    s           r n  r  n    which accounts for leading white-space and the newline character variances  Also  the trailing   handles cases in which the last line of the file begins with   or    but does not end with a newline   For the curious  it is possible to discern which type of newline character is used in a given document  and more than one type may be used   View -  Show Symbol -  Show End of Line

User · Answer

Find             Replace with nothing  The   indicates the start of a line  the      is a character class to match either   or    and    matches anything else in the line   In versions of Notepad   before 6 0  you won t be able to actually remove the lines due to a limitation in its regex engine  the replacement results in blank lines for each line matched  In other words  this      foo   bar statement    Will turn into      statement    However  the replacement will work in Notepad   6 0 if you add  r   n or  r n to the end of the pattern  depending on which line ending your file is using  resulting in    statement

User · Answer

Maybe you should try               matches the beggining    the end

User · Answer

Its possible  but not directly   In short  go to the search  use your regex  check  mark line  and click  Find all   It results in bookmarks for all those lines   In the search menu there is a point  delete bookmarked lines  voila   I found the answer here  the correct answer is the second one  not the accepted    How to delete specific lines on Notepad

User · Answer

In Notepad    you can use the Mark tab in the Find dialogue to Bookmark all lines matching your query which can be regex or normal  wildcard    Then use Search   Bookmark   Remove Bookmarked Lines

[regex] Delete all lines starting with # or ; in Notepad++

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