[slime-devel] invalid protocol message / illegal sharp macro character

[Tamas Papp]

On Thu, 25 Aug 2011 16:33:54 +0200, Helmut Eller wrote:

> * Tamas Papp [2011-08-25 14:14] writes:
> 
>> When compiling a code snippet with C-c C-c, I get the following error
>> in SLIME:
>>
>> Invalid protocol message:
>> SB-INT:SIMPLE-READER-ERROR at 191 (line 3, column 41) on
>> #<SB-IMPL::STRING-INPUT-STREAM
>>
>>                                                            {10049826B1}
>:
>>   illegal sharp macro character: #\
>>
>> "(:emacs-rex (swank:compile-string-for-emacs \"(defun show-pdf
>> (pathname)
>>   (external-program:start \\\"xpdf\\\" (list (namestring pathname)
>>   \\\"-z page\\\")))
>> \" #(\"external.lisp\" 0 13 (buffer-name #2 buffer #<buffer
>> external.lisp> font-lock-face buffer-menu-buffer mouse-face highlight
>> help-echo \"mouse-2: select this buffer\")) (quote ((:position 1951)
>> (:line 43 1))) \"/home/tamas/src/lisp/cl-pgf/external.lisp\" (quote
>> nil)) \":cl-pgf\" t 88) "
> 
> It looks like something added text properties to the string returned by
> buffer-name.  Do you use a package like iswitch-buffer that,
> unintentionally, adds text properties to buffer names?

I am not using iswitch-buffer, but I don't really know much about text 
properties to allow me to figure out what is adding them, it looks like 
something triggered by SLIME.

If I start emacs-snapshot, open a .lisp file and eval (buffer-name), I 
get something like "foo.lisp".

Then, if I start SLIME (ie an inferior lisp), and eval (buffer-name) in 
the lisp buffer, I get something like

#("foo.lisp" 0 8 (buffer-name #0 buffer #<buffer foo.lisp> font-lock-face 
buffer-menu-buffer mouse-face highlight help-echo "mouse-2: select this 
buffer"))

Apparently SLIME is changing something.  Suggestions on how I could find 
what it is would be appreciated, I can reproduce this with a minimal 
SLIME setup, but only with the latest emacs snapshot.  The relevant part 
of *Messages* is 

"foo.lisp"
Polling "/tmp/slime.13780".. (Abort with `M-x slime-abort-connection'.) 
[6 times]
Connecting to Swank on port 52256.. [2 times]
Connected. Lemonodor-fame is but a hack away!
Quit
#("foo.lisp" 0 8 (buffer-name #0 buffer #<buffer foo.lisp> font-lock-face 
buffer-menu-buffer mouse-face highlight help-echo "mouse-2: select this 
buffer))

*slime-events* is at http://paste.lisp.org/+2NVM .

Thanks,

Tamas