Match Patterns Across Lines in Notepad++
Notepad++ is a popular text editor that supports regular expressions, making it an excellent tool for searching and replacing patterns across multiple lines. This article will guide you through the key concepts and techniques for matching patterns across lines using Notepad++.
Finding File Pairs with Variables
Consider a scenario where you have multiple files that contain specific pairs of variables, such as:
THING_1 Number_Of_Thing=7THING_2 Number_Of_Thing=7To find these pairs in Notepad++, you can:
- Open the Find dialog box (Ctrl + F).
- Check the Regular expression option.
- Enter the following search string:
THING_[0-9]+[ \t]Number_Of_Thing=[0-9]+
Here's a breakdown of the regular expression:
THING_[0-9]+: Matches the string "THING\_" followed by one or more digits.[ \t]: Matches a space or a tab character.Number_Of_Thing=[0-9]+: Matches the string "Number\_Of\_Thing=" followed by one or more digits.
Matching Across Multiple Lines
In Notepad++, you can match patterns across multiple lines using the Extended ( , \r, \u, \U) search mode. However, if you require more complex pattern matching across lines, regular expressions are more suitable.
Consider the following example:
Some text THING_1Number_Of_Thing=7More textTo match this pattern across multiple lines, you can use the . (dot) character in regular expressions. The dot matches any character except newline characters. By default, regular expressions in Notepad++ treat newlines as any other character, making it possible to match across multiple lines.
Enter the following search string:
Some text(.|
)*?THING_1\r
Number_Of_Thing=[0-9]+\r
More text
Here's a breakdown of the regular expression:
Some text: Matches the string "Some text".(.| )*?: Matches any character (including newlines) between "Some text" and "THING\_1" (lazy matching).THING_1\r: Matches the string "THING\_1" followed by a newline character.Number_Of_Thing=[0-9]+: Matches the string "Number\_Of\_Thing=" followed by one or more digits.\r More text: Matches a newline character followed by the string "More text".
- Notepad++ supports regular expressions, providing a powerful method for searching and replacing patterns across lines.
- Using regular expressions combined with the ability to match any character, you can quickly find and manipulate data with specific variables across lines.
- Matching patterns across
- Notepad++ supports regular expressions, providing a powerful method for searching and replacing patterns across lines.
- Using regular expressions combined with the ability to match any character, you can quickly find and manipulate data with specific variables across lines.
- Matching patterns across lines in Notepad++ can be complex. However, with practice and understanding of regular expressions, users can efficiently manipulate text containing specific patterns.