TeXmacs on Guile 2.2.4

[Massimiliano Gubinelli]

Hi all,

 I’m porting GNU TeXmacs (www.texmacs.org) to Guile 2.2.4 (and hopefully to 
Guile 3.0). The current status is the following. TeXmacs runs on Guile 2.2.4 
with autocompilation turned off: the applications opens and can read and render 
some files. More work is necessary to switch on compilation. However I’ve a 
problem with reading some TeXmacs files from the disk. Some of them works OK, 
but others give errors while reading: the file is first read into a C string by 
TeXmacs and then converted into a SCM object for further manipulation by Guile. 
At that point I receive this error message

Backtrace:
           7 (apply-smob/1 #<catch-closure 117caea80>)
           6 (apply-smob/1 #<catch-closure 13de3dfc0>)
           5 (apply-smob/1 #<catch-closure 13de3df40>)
           4 (protected-call #<procedure 13de34380 at kernel/gui/men…>)
           3 (apply-smob/1 #<catch-closure 13de3dee0>)
           2 (apply-smob/1 #<catch-closure 13de3de80>)
In texmacs/texmacs/tm-files.scm:
   413:15  1 (load-buffer-load # ())
In unknown file:
           0 (buffer-load #)

ERROR: In procedure buffer-load:
Throw to key `decoding-error' with args `("scm_from_stringn" "input locale 
conversion error" 92 #vu8(60 84 101 88 109 97 99 115 124 49 46 57 57 46 57 62 
10 10 60 115 116 121 108 101 124 60 116 117 112 108 101 124 97 114 116 105 99 
108 101 124 98 114 105 116 105 115 104 124 99 111 109 112 97 99 116 45 108 105 
115 116 62 62 10 10 60 92 98 111 100 121 62 10 32 32 60 92 104 105 100 101 45 
112 114 101 97 109 98 108 101 62 10 32 32 32 32 92 59 10 10 32 32 32 32 60 97 
115 115 105 103 110 124 98 105 98 108 105 111 103 114 97 112 104 121 45 116 101 
120 116 124 60 109 97 99 114 111 124 60 108 111 99 97 108 105 122 101 124 66 
105 98 108 105 111 103 114 97 112 104 [...cut here...]


Things works well with Guile 1.8, so I do not understand very well what is 
going on here. Somebody  has some clue as to what could cause this problem?

Thanks!

Masssimiliano Gubinelli

PS: I have the same problem on 2.9.2 (always with autocompilation off).