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Re: address@hidden: ansi-term \e[J causes spurious newline [revised repo

From: Dan Nicolaescu
Subject: Re: address@hidden: ansi-term \e[J causes spurious newline [revised report]]
Date: Wed, 21 Mar 2007 20:22:07 -0700

Miles Bader <address@hidden> writes:

  > Dan Nicolaescu <address@hidden> writes:
  > > \e[J is the terminfo "ed" string, the terminfo manual says:
  > >
  > >        Ed is only defined from the first column of a line.  (Thus, it
  > >        can be simulated by a request to delete a large number of
  > >        lines, if a true ed is not available.) 
  > ...
  > >   > On the other hand, using "echo" in ansi-term does produce a different
  > >   > result from doing it in xterm.  Isn't that divergent behavior?
  > >
  > > It different behavior for undefined behavior, so it's fine. 
  > Is it the escape sequence "\e[J" actually undefined on a real terminal
  > in that case, or is merely the more abstract "ed" terminfo capability
  > which is undefined in that case?

I am not sure what the question is... :-(
In any case I am not aware of any documentation for the different
escape sequences other than terminfo (or the terminal emulator
actual code, if that counts as documentation).

  > [AFAIK, "term.el" tries to emulate a terminal, not merely the subset of
  > the terminal as viewed through terminfo.]

I don't think so, term.el does not try to emulate a terminal, it
implements a terminal called "eterm-color" now that happens to have
terminfo strings very similar to xterm, but it never claimed to be an
emulator for any specific terminal. And IMO it shouldn't. 

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