[slime-devel] SLIME-SPACE not always working?
Hi! I /think/ this used to work differently some time ago, but I'm not sure. For a simple example create a file "foo.lisp" which has nothing but the line (zerop 42) in it. Now position point behind the "p" and press the space bar. I see no arglist in the mini-buffer. If I instead press backspace, then "p" and the space bar, I see the arglist. Is this expected behaviour? [Linux, FSF Emacs 21.3, CMUCL 18e, SLIME from CVS.] Thanks, Edi.
On Wed, 07 Jul 2004 00:21:38 +0200, Edi Weitz <edi@agharta.de> wrote:
Now position point behind the "p" and press the space bar. I see no arglist in the mini-buffer. If I instead press backspace, then "p" and the space bar, I see the arglist. Is this expected behaviour?
I forgot to say: After deleting and re-inserting the "p" I /can/ position point behind the "p" and press the space bar to see the arglist.
Howdy, Edi Weitz <edi@agharta.de> writes:
I /think/ this used to work differently some time ago, but I'm not sure. For a simple example create a file "foo.lisp" which has nothing but the line
(zerop 42)
in it. Now position point behind the "p" and press the space bar. I see no arglist in the mini-buffer.
After pressing space the contents will be "(zero p 42)", right? So I don't think it should show an arglist, unless there is a function called zero.
If I instead press backspace, then "p" and the space bar, I see the arglist. Is this expected behaviour?
Do you mean you delete the p with backspace, then put it back, then press space? Then it should show the arglist. The intended semantics is that when you press the space bar it shows you the arglist for the surrounding function call. How does that relate to your observations and expectations? :-) I oversimplify a little. If the nearest operator doesn't have an arglist then it will try other surrounding ones, but this should make no difference for the example. -Luke
On Wed, 07 Jul 2004 12:29:42 +0200, Luke Gorrie <luke@bluetail.com> wrote:
Edi Weitz <edi@agharta.de> writes:
I /think/ this used to work differently some time ago, but I'm not sure. For a simple example create a file "foo.lisp" which has nothing but the line
(zerop 42)
in it. Now position point behind the "p" and press the space bar. I see no arglist in the mini-buffer.
After pressing space the contents will be "(zero p 42)", right? So I don't think it should show an arglist, unless there is a function called zero.
No, I said 'point /behind/ the "p"', so after pressing space the contents will be "(zerop 42)" and as far as I know this is equivalent to "(zerop 42)" in CL unless you've modified the readtable. I might be dumb sometimes but I'm not /that/ dumb... :)
If I instead press backspace, then "p" and the space bar, I see the arglist. Is this expected behaviour?
Do you mean you delete the p with backspace, then put it back, then press space? Then it should show the arglist.
Yes, this is of course expected behaviour. My question was if it is expected behaviour that the arglist doesn't show up in the first case.
The intended semantics is that when you press the space bar it shows you the arglist for the surrounding function call. How does that relate to your observations and expectations? :-)
My expectations are that it should work like this. My observations are that it doesn't.
I oversimplify a little. If the nearest operator doesn't have an arglist then it will try other surrounding ones,
Yes, I know.
but this should make no difference for the example.
Right. I'll repeat my observations in more detail: 1. Open up a fresh Emacs and type M-x slime. 2. Visit the file /tmp/foo.lisp which contains exactly the ten characters "(zerop 42)", without the quotes, obviously. 3. Now type C-u 5 C-f so you're behind the "p". 4. Press the space bar. The buffer now looks like "(zerop 42)" - two spaces. 5. I see no arglist in the mini-buffer. 6. Press backspace twice. The buffer now looks like (zero 42) 7. Now press p and the space bar. The buffer again (see step 4) looks like "(zerop 42)" with two spaces. 8. But this time I see the arglist in the mini-buffer. 9. Note that in /both/ cases (step 5 and step 8) the buffer contents are identical, the point is at the same position and the last key pressed was the space bar. In step 8 you see the arglist, in step 5 you don't. Let me know if you need more details... :) My guess is that the arglist is not shown if the space is the first character that modifies the buffer, i.e. if it's the character that makes the buffer go out of sync with its couterpart in the file system and which triggers the asterisks in the modeline. (Evidence: Press space again after step 5 - arglist shows up now.) Maybe the arglist function interfers with the corresponding hook. (I'm not an Emacs wizard.) Cheers, Edi.
Edi Weitz <edi@agharta.de> writes:
I'll repeat my observations in more detail:
1. Open up a fresh Emacs and type M-x slime.
2. Visit the file /tmp/foo.lisp which contains exactly the ten characters "(zerop 42)", without the quotes, obviously.
3. Now type C-u 5 C-f so you're behind the "p".
4. Press the space bar. The buffer now looks like "(zerop 42)" - two spaces.
Surely this needs to be `C-u 6 C-f SPC'. Doing that I see the problem, fixed in CVS now. Nice detective work! I recently added a `first-change-hook' that sends a notification to Lisp - the CMUCL backend uses this to cache the source file before it gets munged on disk. But sending that notification means Emacs has a pending RPC so it considers itself "busy" and skips the arglist lookup! Fixed just by doing arglist lookup before inserting the space and triggering the hook. -Luke
On Wed, 07 Jul 2004 14:08:26 +0200, Luke Gorrie <luke@bluetail.com> wrote:
Surely this needs to be `C-u 6 C-f SPC'.
Argh!!!
Doing that I see the problem, fixed in CVS now. Nice detective work!
Works now. Cool! Thanks, Edi.
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Edi Weitz -
Luke Gorrie