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AW: AW: vc-state always calls heuristic function

From: klaus.berndl
Subject: AW: AW: vc-state always calls heuristic function
Date: Fri, 26 Nov 2004 12:46:45 +0100

Thanks for your answer!


-----Urspr√ľngliche Nachricht-----
Von: Kim F. Storm [mailto:address@hidden]
Gesendet: Fr 26.11.2004 12:44
An: Berndl, Klaus
Cc: address@hidden; address@hidden
Betreff: Re: AW: vc-state always calls heuristic function

Current state is that RMS rejected Stefan's implementation of while-no-input.

No further progress was made, as Stefan didn't want to pursue the
issue further and I didn't quite understand how RMS wanted to
implement it using a signal.

Too bad!!   It would be a very nice feature to have!

<address@hidden> writes:

> sorry for sending this again - but until now i got
> no answer to my question about the current state of
> while-no-inmput - see below - maybe you have forgotten to
> answer... ;-)
> Klaus
> -----Urspr√ľngliche Nachricht-----
> Von: address@hidden im Auftrag von address@hidden
> Gesendet: Mi 24.11.2004 15:44
> An: address@hidden
> Cc: address@hidden
> Betreff: RE: vc-state always calls heuristic function

> Stefan Monnier wrote:
>>> and between each pass of the loop it is interruptable..well, but of
>>> course there remains the problem - how to interrupt if one pass
>>> takes long
>>> time...
>> Google for `while-no-input'.
> Done - after reading the whole thread i can say: I agree at 100% with you and Kim.
> Such a macro would be very important especially for a program like Emacs which
> has still not thread-feature like Java, C++ et. al. IMHO this is one of the
> most important any annoying lacks of emacs-lisp and for programmers...
> And i agree with Kim that especially people working with remote-paths and
> packages which makes this completely transparent (like tramp, ange-ftp and efs)
> would profite a lot from such a macro like while-no-input -
> The current discussion how to enable tools like ECB to display some state-value
> for files (as the VC-state-values) where the computation could be expensive
> is IMHO a good example to demonstrate the need of such feature - so we have no
> threads avaliable in emacs-lisp to perform such expensive tasks in the background
> without blocking the user of Emacs but we could at least offer the users of
> such tools a way how to easily (hitting C-g is not acceptable) interrupt also
> "atomic" calls as call of call-process etc...
> Well, Stefan - this thread was discussed in 2002 - what is current state of
> this while-no-input???
>>> Hmm, now i'm confused... ECB needs a function how to get the
>>> VC-state. Well, the user can customize which function ECB should
>>> use.  But if he should
>>> not use `vc-recompute-state' how he should get fresh-but-slow state??
>> Oh, you're right I got confused: vc-cvs-heuristic-state doesn't pay
>> attention to vc-cvs-stay-local.  Hmmm....
>> I guess VC could/should provide a function like vc-recompute-state or
>> vc-check-for-updates.  Currently this operation is only provided as
>> part of vc-next-action, but it might be nice to decouple the two.
> Yes, see my discussion with Andre about this...
> Klaus
>>         Stefan
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Kim F. Storm <address@hidden> http://www.cua.dk

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