notepad++ deleting all text except what matches regex

notepad++, regex

Solution

EDIT: You should be able to use the following here.

Find: ^(?!d\w+).*\r?\n?
Replace:

Regular Expression:

^              the beginning of the string
(?!            look ahead to see if there is not:
  d              'd'
  \w+            word characters (a-z, A-Z, 0-9, _) (1 or more times)
)              end of look-ahead
.*             any character except \n (0 or more times)
\r?            '\r' (carriage return) (optional)
\n?            '\n' (newline) (optional)

Problem

I have a text file with information about a recording, including track numbers and names, and I want to delete all the other text except the track number and track names. For example the text file looks like this: ``` text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text d1t01 - trackname d1t02 - trackname d1t03 - trackname d1t04 - trackname d1t05 - trackname d1t06 - trackname d1t07 - trackname d1t08 - trackname d1t09 - trackname d1t10 - trackname d1t11 - trackname text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text ``` I want to be left with just this: ``` d1t01 - trackname d1t02 - trackname d1t03 - trackname d1t04 - trackname d1t05 - trackname d1t06 - trackname d1t07 - trackname d1t08 - trackname d1t09 - trackname d1t10 - trackname d1t11 - trackname ``` I figured out how to match the beginning of the line with this regex: ``` d[0-9]+t[0-9]+[0-9]+ - ``` But I can't figure out how to delete the rest of the "text" and only leave those lines. I also need it to delete the "returns" and not be left with any blank lines in the text file. Thank you!

Original source