I was trying to install TextWranger as my differential tool withinside Dreamweaver, but had a hard time figureing it out. In TexWrangler, go to FILE > Install Command Line Tools.
In Dreamweaver, goto Preferences > File Compare, then browse for the twdiff command line, which is located in /usr/local/bin/twdiff.
Then, within Dreamweaver, select 2 files in the FILES panel, then "Compare Local Files." It’s a wonderful thing!
