Paul Calnan
Published August 14, 2012

TextExpander is one of the first apps I install on a new computer. It's great for abbreviating repeatedly-typed strings. It also is capable of doing simple date arithmetic. Here are some examples I use regularly.

Abbreviation Expansion Example
;yesterday %@-1D%Y-%m-%d 2012-08-12
;today %Y-%m-%d 2012-08-13
;tomorrow %@+1D%Y-%m-%d 2012-08-14

There's more information about this on the TextExpander blog.