11:29 p.m.
On Thursday 27 September 2007, you wrote:
Ville Skyttä <scop(a)xemacs.org> writes:
> But in the absence of process-file or similar that we could use the tramp
> handlers for, let's leave tramp as is (patched) and go all the way then
> in vc - the attached patch is not that pretty but I think it should fix
> this issue. Could you test it?
Sorry to enter your discussion.
You're very much welcome, I'm glad you did!
But I believe it is not a good idea to
have tramp-related code in vc*.el. In order to hide such dependencies,
tramp-vc.el was introduced.
I see and agree. And I did mention that my patch wasn't pretty ;)
And indeed,
`tramp-send-command-and-check' has a different parameter list in Tramp
2.1. And since Tramp 2.1 is also intended for XEmacs, your patch would
fail there already.
Thanks for the info.
> (defun vc-user-login-name (file)
> "Return the name under which the user accesses the given FILE."
> (or (and (eq (string-match tramp-file-name-regexp file) 0)
Hmm. In GNU Emacs (please forgive me) the function `file-remote-p'
supports file name handlers for magic file names. Such a call is much
more robust wrt Tramp internals.
The code above comes as-is from GNU Emacs at the point I last synced it which
was somewhere before it went GPLv3 - I haven't looked at later versions there
because I think we're not ready to receive GPLv3 code in XEmacs yet.
(or (functionp 'process-file)
(defalias 'process-file 'tramp-handle-process-file))
The other altrnative would be to call `tramp-handle-process-file' directly.
This was the first approach I tried. However, it doesn't work for me,
evaluating (vc-user-login-name "/[some.host]foo/bar") I get this:
Debugger entered--Lisp error: (wrong-type-argument number-char-or-marker-p
nil)
vc-user-login-name("/[some.host]foo/bar")
eval((vc-user-login-name "/[some.host]foo/bar"))
eval-interactive((vc-user-login-name "/[some.host]foo/bar"))
eval-last-sexp(t)
#<compiled-function nil "...(13)" [standard-output terpri eval-last-sexp t] 2
1250159 nil>()
call-interactively(eval-print-last-sexp)
I'm not familiar with tramp and not quite sure how tramp-handle-process-file
is supposed to work - it appears to return what shell-command returns (nil
for my test cases? dunno - not documented) and that value is fed to zerop in
vc-user-login-name. I gather shell-command is wrapped by tramp's handler in
GNU Emacs so it could be different, but in XEmacs we get the usual unwrapped
shell-command which doesn't seem fit for this purpose.
Implementing process-file and the handler infrastructure would look like a
welcome addition, but it's much more work than I personally have time for at
the moment and probably would only work for bleeding edge XEmacs. And that's
a no go because the packages tree needs to work with earlier stable XEmacs
branches too for which largish feature work such as this is not generally
welcome.
I also briefly tried the old defadvice way by reverting the patch I posted to
tramp.el earlier, but couldn't get that to work either (I'm not sure about
the details but it could have been that I missed something I should have
changed in vc-hooks.el too).
If you have other ideas how to get around this, I'd be glad to hear about
them.
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2:14 p.m.
New subject: new vc rcs file checkin problem with tramp
Ville Skyttä <scop(a)xemacs.org> writes:
> (or (functionp 'process-file)
> (defalias 'process-file 'tramp-handle-process-file))
>
> The other altrnative would be to call `tramp-handle-process-file' directly.
This was the first approach I tried. However, it doesn't work for me,
evaluating (vc-user-login-name "/[some.host]foo/bar") I get this:
Debugger entered--Lisp error: (wrong-type-argument number-char-or-marker-p
nil)
Hmm, you're right. The implementation of `process-file' in Tramp 2.0
is stupid, indeed. It does not return the proper exit code.
I hope we can solve the GPL licensing issues sometime. Then we could
go forward with Tramp 2.1 in XEmacs, which has been declared as stable
Tramp version meanwhile.
Best regards, Michael.
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9:05 p.m.
New subject: new vc rcs file checkin problem with tramp
On Monday 01 October 2007, Michael Albinus wrote:
Ville Skyttä <scop(a)xemacs.org> writes:
>> (or (functionp 'process-file)
>> (defalias 'process-file 'tramp-handle-process-file))
>>
>> The other altrnative would be to call `tramp-handle-process-file'
>> directly.
>
> This was the first approach I tried. However, it doesn't work for me,
> evaluating (vc-user-login-name "/[some.host]foo/bar") I get this:
>
> Debugger entered--Lisp error: (wrong-type-argument
> number-char-or-marker-p nil)
Hmm, you're right. The implementation of `process-file' in Tramp 2.0
is stupid, indeed. It does not return the proper exit code.
Ouch:(
I hope we can solve the GPL licensing issues sometime. Then we could
go forward with Tramp 2.1 in XEmacs, which has been declared as stable
Tramp version meanwhile.
Hopefully so. However this is something I'm afraid we'll need to take care of
without waiting for that to happen, so if you (or someone else) has other
suggestions to try, I'd be glad to hear about them (and even more glad to see
patches ;))
If nothing comes up, I'm inclined to apply the ugly patch I posted and
accompany it with a warning that it won't work for tramp >= 2.1 and perhaps
additionally wrap it so that if it fails, it does so with an understandable
explanation what happened.
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11:42 a.m.
New subject: new vc rcs file checkin problem with tramp
Ville Skyttä <scop(a)xemacs.org> writes:
Hopefully so. However this is something I'm afraid we'll
need to take care of
without waiting for that to happen, so if you (or someone else) has other
suggestions to try, I'd be glad to hear about them (and even more glad to see
patches ;))
It is even worse. In Tramp 2.0, tramp-handle-process-file calls
internally shell-command. The latter function does not support the
file-name-handler mechanism in XEmacs, so there is no chance that
process-file works properly with Tramp 2.0 and XEmacs.
If nothing comes up, I'm inclined to apply the ugly patch I
posted and
accompany it with a warning that it won't work for tramp >= 2.1 and perhaps
additionally wrap it so that if it fails, it does so with an understandable
explanation what happened.
That seems to be the last resort.
Best regards, Michael.
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5:48 p.m.
New subject: new vc rcs file checkin problem with tramp
On Sunday 07 October 2007, Michael Albinus wrote:
Ville Skyttä <scop(a)xemacs.org> writes:
> If nothing comes up, I'm inclined to apply the ugly patch I posted and
> accompany it with a warning that it won't work for tramp >= 2.1 and
> perhaps additionally wrap it so that if it fails, it does so with an
> understandable explanation what happened.
That seems to be the last resort.
In absence of better ideas, I've done this in CVS.
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9:25 a.m.
New subject: new vc rcs file checkin problem with tramp
Ar an t-ochtú lá is fiche de mí Deireadh Fómhair, scríobh Ville Skyttä:
On Sunday 07 October 2007, Michael Albinus wrote:
> Ville Skyttä <scop(a)xemacs.org> writes:
>
> > If nothing comes up, I'm inclined to apply the ugly patch I posted and
> > accompany it with a warning that it won't work for tramp >= 2.1 and
> > perhaps additionally wrap it so that if it fails, it does so with an
> > understandable explanation what happened.
>
> That seems to be the last resort.
In absence of better ideas, I've done this in CVS.
This seems to have broken the package smoketest, on all builds:
http://labb.contactor.se/~matsl/smoketest/logs/
I suspect, but I haven’t checked, that adding tramp to the REQUIRES in the
package Makefile will fix that.
--
On the quay of the little Black Sea port, where the rescued pair came once
more into contact with civilization, Dobrinton was bitten by a dog which was
assumed to be mad, though it may only have been indiscriminating. (Saki)
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