What You Can Learn From ido.el (Emacs vs. TextMate) [video]
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So far, I've found that autotest.el + file-cache + ffap + some advice for ffap (see my emacswiki page) does 80-90% of what I need on a daily basis.
Wouldn't it have been possible to preserve both the classic editability of the path string and have fuzzy matching?
to answer the question above: it is VERY intrusive. I've finally set it up to only ever take 1 line only, but even then it is a huge departure from the norm. The key incompatibility is a huge issue. The fact that all my muscle memory (17 years) is dead using it.
I have this peculiar belief that C-x C-f RET should _always_ open the parent dir of the current buffer's file. ido threw that out the window. Now that will load the alphabetically first file in the dir. Lame.
There are others, but I don't remember them currently.
I like Icicles much better. It offers lots of features like ido, but I actually need to press a key before they happen.
99% of the time it somehow seems to have read my mind, so I can tab my way to happiness.