ESS 5.1.19 & Emacs 21.1.3

[Stephen Eglen]

 > Thanks for your reply. "C-c C-x" now works, "?ls" at the command line
 > still produce an error. Because this error is not "wrong type of
 > argument" I think it isn't caused by concat.
 > 

yes, I get the same error on Emacs 21.1 -- when doing ?ls in the R buffer
I get the following:

Debugger entered--Lisp error: 
  ...
  error("ESS process not ready. Finish your command before trying again.")
  ess-error("ESS process not ready. Finish your command before trying again.")
  ess-command("help(\"ls\", htmlhelp=FALSE)\n" #<buffer *help[R](ls)*>)
  ess-display-help-on-object("ls")
  inferior-R-input-sender(#<process R> "?ls")
  comint-send-input()
  inferior-ess-send-input()
  call-interactively(inferior-ess-send-input)

The patch for concat() i sent recetly doesn't seem to relate to this 
problem.

Stephen
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