Had to write this today to find and replace phone numbers in a file (luckily all the same format), but TextPad makes you use a little different syntax for their regular expressions.

Find:
[[:digit:]]\{3\}-[[:digit:]]\{3\}-[[:digit:]]\{4\}

Replace:
,&

Now it finds any phone number with the format ###-###-#### and places a comma in front of it. I needed the comma for a CSV file.

Thought it may be useful for someone working in TextPad and trying to do regex searches in it.