How to delete characters from the beginning of a line to a specific character in Notepad++
Enabling regular expression mode
To use regular expressions in Notepad++, you need to enable this mode in the Find and Replace dialog. Do the following:
- Open the file by selecting File > Open and choose the desired file.
- Press Ctrl+H to open the Find and Replace dialog.
- At the bottom of the dialog, set the switch to Regular expression mode.
Writing the regular expression
To delete characters from the beginning of a line to a specific character, you need to write the correct regular expression. For example, if you want to delete all characters from the beginning of a line to a colon (:), the regular expression will look like this:
^.*?:
Explanation of the regular expression:
^— beginning of the line..*?— any character (except a newline) repeated 0 or more times, but as few as possible (lazy quantifier).:— colon character.
Now that the regular expression is written, you can apply it to delete characters:
- In the Find field, enter the regular expression:
^.*?: - Leave the Replace with field empty, as we want to delete the found characters.
- Click the Replace All button to replace all occurrences in the file.
Usage examples
- To delete text from the beginning of a line to the @ character, use the regular expression:
^.*?@ - To delete text from the beginning of a line to the # character, use the regular expression:
^.*?#
Using the described steps, you can delete characters from the beginning of a line to a specific character.