[ESS] ESS Fontify Problem?

[Spencer Graves]

	  How can one break out of an apparently infinite "Fontifying" loop? 
Somone suggested doing "C-c C-c C-g to break the loop (might need to do 
it a couple of times). Once you get the prompt back, try M-x 
font-mode-lock to turn off fontifying and then M-x font-mode-lock to 
turn it back on."  This has worked sometimes but not others.

	  I'm trying to use 'debug' with a function with an argument that 
references a data.frame with 2245 rows and 315 columns.  When 'debug' 
traps that function, it wants to print the entire 2245 x 315 data.frame 
before it prints the function.  Reducing options('max.print') has helped 
with this "fontifying" problem in other contexts.  Here, I got the same 
result with options(max.print=0) as with larger numbers.

	  Attached are a couple of "print screen" images illustrating the 
problem.  I think I'm using "ESS version 5.2.11" with "C:\Program
Files\XEmacs\XEmacs-21.4.19\i586-pc-win32\xemacs.exe", but I don't even 
know how to accurately identify which version I'm using of either ESS or 
XEmacs.

       Do you have any suggestions?
       Thanks,
       Spencer Graves

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R version 2.6.1 (2007-11-26)
i386-pc-mingw32

locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] stepAICc_1.2-8
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