bug#8369: vc-annotate fails

bug#8369: vc-annotate fails

[Uwe Brauer]

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Hello 

I have a file under rcs control (about 50 checkins) 
and vc-annotate worked fine, however today vc-annotate returned an error which I 
attach. I am puzzled,

Uwe Brauer 


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Debugger entered--Lisp error: (wrong-type-argument char-or-string-p nil)
  vc-rcs-annotate-command("/home/oub/tex/Francais-B1.2/lettre.tex" #<buffer *Annotate lettre.tex (rev 3.1)*> "3.1")
  apply(vc-rcs-annotate-command ("/home/oub/tex/Francais-B1.2/lettre.tex" #<buffer *Annotate lettre.tex (rev 3.1)*> "3.1"))
  vc-call-backend(RCS annotate-command "/home/oub/tex/Francais-B1.2/lettre.tex" #<buffer *Annotate lettre.tex (rev 3.1)*> "3.1")
  vc-annotate("/home/oub/tex/Francais-B1.2/lettre.tex" "3.1" fullscale)
  call-interactively(vc-annotate)
  execute-extended-command(nil)
  call-interactively(execute-extended-command)

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In GNU Emacs 22.1.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2010-03-26 on rothera, modified by Ubuntu
Windowing system distributor `The X.Org Foundation', version 11.0.10400090
configured using `configure  '--build=i486-linux-gnu' '--host=i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs22:/etc/emacs:/usr/local/share/emacs/22.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/22.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/22.1/leim' '--with-x=yes' '--with-x-toolkit=athena' '--with-toolkit-scroll-bars' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Debugger

Minor modes in effect:
  shell-dirtrack-mode: t
  global-pabbrev-mode: t
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
y C-x C-f <backspace> <return> s <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> f M-x v c SPC a n <tab> <return> M-x 
d e b <tab> o <backspace> u <tab> SPC o n <tab> <M-backspace> 
<tab> <return> C-g C-h a d e b u g <return> C-x o <next> 
C-s e r r o r C-x o M-x t o g <tab> d e <tab> e <tab> 
<return> C-x 1 M-x v c SPC a n <tab> <return> C-x C-w 
d e b u g - <M-backspace> v c - a n n - e r r <return> 
C-x C-f t e <tab> <backspace> <backspace> <backspace> 
<return> g + t e s t <return> f C-x C-f t e s t r c 
<backspace> c s <return> t h i s SPC C-x C-s C-x v 
v y e s <return> SPC C-x v v SPC SPC <return> <return> 
n e w SPC C-x C-s C-x v v C-c C-c C-x v v SPC SPC <return> 
<return> <return> a g a i n SPC C-x C-s C-x v v C-c 
C-c C-x k <return> g <down> f C-x v v C-h v C-g C-c 
C-g C-x v l <next> <prior> C-x o C-x 1 C-x C-f <backspace> 
<return> g <up> <up> <up> <down> f g <down> <down> 
f M-x r e p o r <tab> <return>

Recent messages:
Press C-c C-c when you are done editing.
Enter a change comment.  Type C-c C-c when done
Checking in /home/oub/tex/Francais-B1.2/test/testrcs...done
pabbrev scavenging...
Note: file is write protected
Checking out /home/oub/tex/Francais-B1.2/test/testrcs...done
Quit
Loading log-view...done
Directory has changed on disk; type g to update Dired [2 times]
Loading emacsbug...done

bug#8369: vc-annotate fails

[Glenn Morris]

Uwe Brauer wrote:

> Debugger entered--Lisp error: (wrong-type-argument char-or-string-p nil)
>   vc-rcs-annotate-command("/home/oub/tex/Francais-B1.2/lettre.tex" #<buffer *Annotate lettre.tex (rev 3.1)*> "3.1")
>   apply(vc-rcs-annotate-command ("/home/oub/tex/Francais-B1.2/lettre.tex" #<buffer *Annotate lettre.tex (rev 3.1)*> "3.1"))
>   vc-call-backend(RCS annotate-command "/home/oub/tex/Francais-B1.2/lettre.tex" #<buffer *Annotate lettre.tex (rev 3.1)*> "3.1")
>   vc-annotate("/home/oub/tex/Francais-B1.2/lettre.tex" "3.1" fullscale)
>   call-interactively(vc-annotate)
>   execute-extended-command(nil)
>   call-interactively(execute-extended-command)

The backtrace doesn't really tell us anything, so unless this is
repeatable, I don't think much can be done.

> In GNU Emacs 22.1.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
>  of 2010-03-26 on rothera, modified by Ubuntu

Emacs 22.1 is old and is no longer supported. The latest release is 23.3.

Re: bug#8369: vc-annotate fails

[Uwe Brauer]

>> Regarding bug#8369: vc-annotate fails; Glenn Morris <rgm@gnu.org> adds:

   > Uwe Brauer wrote:

   > The backtrace doesn't really tell us anything, so
   > unless this is repeatable, I don't think much can be
   > done.

That was my imperssion too.
   >> In GNU Emacs 22.1.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
   >> of 2010-03-26 on rothera, modified by Ubuntu

   > Emacs 22.1 is old and is no longer supported. The
   > latest release is 23.3. 

Right, I tried it out also with GNU emacs 23.1 (that is the
latest version in Kubuntu 10.1) with  Xemacs 21.4.22 and
21.5.29 and it failed in all of them.

I then tried vc-annotate  with different rev version and
indeed then I found a critical number such that it worked for
all version below this number.

I removed the version from the branch via rcs -orev and then
vc-annotate worked again!

BTW there is no emacs command for rcs -o?

So I am not sure what to conclude, maybe I should contact
directly the author of that function.


Uwe Brauer 

bug#8369: vc-annotate fails

[Glenn Morris]

[Please try not to use the newsgroup gateway for posting if you can.
It bypasses the bug tracker.]

Uwe Brauer wrote:

> Right, I tried it out also with GNU emacs 23.1 (that is the
> latest version in Kubuntu 10.1) with  Xemacs 21.4.22 and
> 21.5.29 and it failed in all of them.
>
> I then tried vc-annotate  with different rev version and
> indeed then I found a critical number such that it worked for
> all version below this number.
>
> I removed the version from the branch via rcs -orev and then
> vc-annotate worked again!
>
> BTW there is no emacs command for rcs -o?
>
> So I am not sure what to conclude, maybe I should contact
> directly the author of that function.


I suggest something like:

Make sure you have the .el files installed, if they come in a separate
package on your distribution. Then do:

emacs-23.1 -Q -l cl -l vc-rcs.el

C-h f vc-rcs-annotate-command

Click on `vc-rcs.el' link to go to definition.

M-x edebug-defun

Then repeat the thing that causes the error, stepping through the
vc-rcs-annotate-command with the space key.

bug#8369: vc-annotate fails

[Glenn Morris]

If you ever figure out what was different about that revision, then
please reply to this and we can reopen this report if needed.
Or you can send me the whole RCS (so long as there are no privacy
concerns) and I will take a look. But without more information, there's
nothing we can do, so I am closing this for now.

Glenn Morris wrote:

>> indeed then I found a critical number such that it worked for
>> all version below this number.
>>
>> I removed the version from the branch via rcs -orev and then
>> vc-annotate worked again!
[...]
> Make sure you have the .el files installed, if they come in a separate
> package on your distribution. Then do:
>
> emacs-23.1 -Q -l cl -l vc-rcs.el
>
> C-h f vc-rcs-annotate-command
>
> Click on `vc-rcs.el' link to go to definition.
>
> M-x edebug-defun
>
> Then repeat the thing that causes the error, stepping through the
> vc-rcs-annotate-command with the space key.