Regexp with carrriages in notepad++ on windows

Question

I have several .txt files I must modify:

every

\(
\blabla

must become

\begin{equation*}
\blabla

notepad++ does find \\( when I use \\(\r. But when I input \\(\r\blabla it does not find anything. I am a noob at regexp.

Answer 1

To match newlines, you need a \n in some places, and \r in others. I'm not sure about which to use when either, but if the one doesn't work, try the other. In your case, use this:

\\(\n\\blabla

Answer 2

You can also use "Extended Search" option in "Search Mode" section. This will detect \r correctly. Enter search string as \(\r.

Answer 3

Strictly speaking, you should use something like (?:\r\n|[\r\n]) to match any of the three most common line endings, \n (Unix), \r\n (DOS/Windows) or \r alone (pre-OSX Mac). In this case I think it's safe to assume the line endings are all \r\n or all \n, which you can match with \r?\n.

But you have a better option: \v, the vertical whitespace shorthand. It will match a carriage return or linefeed, but not spaces or tabs. This works for me in NPP v6.5.5:

\\(\v+\\blabla

I'm assuming you want \\b to match a backslash followed by b, not a word boundary.

Answer 4

If you want to match any line break, use \R. And, as Alan Moore said, to match a backslash \ followed by a b, use \\b:

\\(\R\\blabla

\R matches \r or \n or \r\n