TextPad: How to Remove All Lines Except the Ones Containing a Pattern

Similar to NotePad,^[1] you can remove all lines except the ones containing a pattern in TextPad.^[2,3] There is an easy way to achieve this. Basically, you need to perform 3 steps:

1. Bookmark all lines containing a pattern
2. Inverse bookmark
3. Delete all bookmarked lines

 

Bookmark All Lines Containing a Pattern

For this demonstration, we want to remove all lines except the ones containing the following pattern:

• "concurrent-mark-end"

To bookmark all lines containing a pattern:

1. Go to Menu "Search" and select "Find..."  
2. Specify the pattern in "Find what:" and select "Regular expression"
3. Hit Button "Mark All"

Inverse Bookmark

To inverse bookmark, do:

• Go to Menu "Search" and select "Inverse Bookmarks"

 You should see some lines are marked and some not.

Delete All Bookmarked Lines

To delete all bookmarked lines, do:

1.  Go to Menu "Edit" and select "Delete > Bookmarked Lines"

and you should see the final results below:

References

1. How to delete all line except lines containing a word I need?
2. TextPad Quick Reference Card - John Bokma
3. TextPad Downloads