how to join multiple lines in notepad++ with comma as a separator

问题

I need to join multiple lines in notepad++ into one single line with comma as a separator

one
two
three
four
five

the output that I need is as below

one,two,three,four,five

Ctrl+A and Ctrl+j will join but will add space

回答1:

CTRL+ H -> check "regular expression" -> search \s\r\n (or \s+ )-> replace all with ,.

Similar question on SuperUser.

回答2:

• Ctrl+H
• Find what: \R(?=\S)
• Replace with: ,
• Replace all

Explanation:

\R     : any kind of linebreak
(?=\S) : Positive lookahead, make sure we have a non space character after, to avoid inserting a comma at the end of the string

Result for given example:

one,two,three,four,five

来源：https://stackoverflow.com/questions/42465806/how-to-join-multiple-lines-in-notepad-with-comma-as-a-separator