Support for "flashing" in Apple Terminal has been added in commit 989c6e0bcb3e5f8be9bd5235a8f1c43c57a12ec4. As noted in
ROO-1192 cursor positioning in Apple's Terminal program doesn't follow "standard" escape character conventions for cursor save and restore, "^[s" and "
^[u" respectively. Based on information found here on page 145 Roo has been modified to use these Apple specific escape characters.
An adjustment has also been added to terminal title manipulation, for the Apple Terminal a BEL character is now prepended instead of a '\'.