Comments on: Emacs Directory Aliases

By: Jared

Jared — Tue, 16 Nov 2010 22:03:32 +0000

Good to know! And although I might be crazy enough to redifine identity, I’m not crazy enough to redefine car

Cheers

By: Chris

Chris — Tue, 16 Nov 2010 21:32:41 +0000

#’ is mostly a carryover from Common Lisp that doesn’t really do anything in Elisp. It’s the same as using (function), which, in Elisp, is only used to tell the compiler to follow through to that symbol and compile it too. In practice, not only is this almost always unnecessary because the symbol would have already been compiled anyway (defined in a file that was already being compiled), but I’ve found that the compiler doesn’t *actually* quite behave this way.

And also since it’s uglier and requires an extra character, I never bother using it in Elisp at all.

In this specific case, car is a built-in, so using #’ couldn’t do anything unless you’re a crazy person who has somehow redefined car in lisp.

By: Jared

Jared — Thu, 11 Nov 2010 20:02:18 +0000

Hi Chris, That's another thing I noted from the perlsofwisdom blog I linked to in my clever emacs lisp post (although isn't it more usual to use #' in this instance rather than just ' ?). I really need to tidy some of my code up at some stage. Cheers

By: Chris

Chris — Thu, 11 Nov 2010 13:08:21 +0000

Wrapping a simple function in another simple function?

(mapcar (lambda (e) (car e)) *dired-dirs*)

No need for that.

(mapcar ‘car *dired-dirs*)

By: Jared

Jared — Thu, 26 Feb 2009 22:17:28 +0000

You’re welcome Kevin

By: kevinmiter

kevinmiter — Thu, 26 Feb 2009 02:46:57 +0000

Hi Jared,
I misunderstood what Reynaldo said. With your explain, I know it. Now it works well.^_^

By: Jared

Jared — Tue, 24 Feb 2009 07:47:25 +0000

Hi Kevin,

I also have C-SPC bound to set-mark. Have you enabled ido mode with (ido-mode t) or something similar?

When following Reynaldo’s tip, the list has already been narrowed after typing .c. Pressing C-SPC after this re-enters ido mode with the new filtered list that you can now apply other filters to or select between elements using the arrow keys.

By: kevinmiter

kevinmiter — Tue, 24 Feb 2009 02:45:43 +0000

@Reynaldo As you said, I try it : C-x C-f .c C-SPC , but nothing happens. I think this is because I bound C-SPC to set-mark. Can you tell me C-SPC means what function? Thanks.

By: Jared

Jared — Wed, 18 Feb 2009 20:36:00 +0000

Hi folks,

@Sacha – you’re welcome! (it was a good post). The autofinding in ido seems to be a bit hit and miss to me. After waiting for half a second for the search in any directory it mostly finds what I wanted, but occasionally it doesn’t.

@mazirian – I’ve heard very good things about anything mode and it is definitely on my list of things to check out.

@Reynaldo – fantastic, I didn’t know about that and it is exactly what I was talking about. Thanks very much for your input.

By: Reynaldo

Reynaldo — Wed, 18 Feb 2009 17:13:22 +0000

I don’t know If you meant this, but you can filter matches with ido mode.

Say you are looking for .c files, you can C-x C-f .c C-SPC

If it’s not what you meant, just ignore me