Before I get flamed out of existence - I use a Mac, and I use TextMate, and I use Emacs. With that disclaimer out of the way -<p>This guy bought a whole different platform just so that he could run a different text editor? This feels like putting the wrong cart in front of the wrong horse.
I think in this case the Ruby community is a trend follower instead of trend setter.. I guess Emacs (or vim) is being used by open source folks for two decades.
What emacs extensions do other people use for Rails?<p>I use two-mode-mode to swap between HTML (psgml) mode and Ruby mode for the templates, as well as rhtml-minor-mode, which is mainly aimed at helping psgml-mode find the parent layout. rhtml-minor-mode could use some hacking - I wrote it in a hurry.
As an aside, ruby-mode was recently merged into the emacs core, so that should help adoption. I know I have seen a lot of complaints on #emacs about "why doesn't ruby code have syntax highlighting!?". Now it does :)<p>People should also try out my new eproject minor mode, which will make emacs aware of the relationships between files in the same project:<p><a href="http://git.jrock.us/?p=eproject.git;a=blob_plain;f=eproject.el;hb=HEAD" rel="nofollow">http://git.jrock.us/?p=eproject.git;a=blob_plain;f=eproject....</a><p>I think textmate has a feature like this that people like.