From owner-bug-octave at bevo dot che dot wisc dot edu  Wed Jan 22 21:19:52 1997
Subject: How to run octave through remsh?
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Francesco Potorti` <F dot Potorti at cnuce dot cnr dot it>
Cc: Octave bugs list <bug-octave at bevo dot che dot wisc dot edu>
Date: Wed, 22 Jan 1997 21:18:44 -0600

On  2-Jan-1997, Francesco Potorti` <F dot Potorti at cnuce dot cnr dot it> wrote:

: I used to run octave 1 in a rlogin window inside emacs.  I invoked it
: with `remsh sable bin/octave'.  For misterious reasons it didn't give
: me a prompt, but for the rest everything was okay.  If I tried the -i
: option, it echoed my keystrokes twice, so I preferred to have no
: prompt.
: 
: Octave 2.0 behaves differently.  It will write in batches.  For
: example, this is the trace of an emacs rlogin session:
: Octave, version 2.0 (alpha-dec-osf3.0).
: Copyright (C) 1996 John W. Eaton.
: This is free software with ABSOLUTELY NO WARRANTY.
: For details, type `warranty'.
: 
: 1
: 2
: 3
: l
: error: `l' undefined near line 4 column 1
: error: evaluating expression near line 4, column 1
: ans = 1
: ans = 2
: ans = 3
: 
: 
: While this is the trace when octave is called with the -i option:
: 
: Octave, version 2.0 (alpha-dec-osf3.0).
: Copyright (C) 1996 John W. Eaton.
: This is free software with ABSOLUTELY NO WARRANTY.
: For details, type `warranty'.
: 
: 1
: 2
: 3
: l
: error: `l' undefined near line 4 column 1
: error: evaluating expression near line 4, column 1
: octave:1> octave:1> octave:1> 
: octave:1> 1
: ans = 1
: octave:2> octave:2> 2
: ans = 2
: octave:3> octave:3> 3
: ans = 3
: octave:4> octave:4> l
: 
: Is there any way to use octave 2.0 in the way I am used to?

Please try the following patch.  I think it will allow you to get the
behavior you want if you use the -i option when running Octave.

Thanks,

jwe


Wed Jan 22 20:54:12 1997  John W. Eaton  <jwe at bevo dot che dot wisc dot edu>

	* input.cc (gnu_readline): If not using readline, flush
	rl_outstream after printing prompt.
	(octave_gets): Also call flush_octave_stdout() if
	forced_interactive, not just if interactive.
	(do_input_echo): If forced_interactive, only echo prompt and
	command line if also reading a script file.


Index: input.cc
===================================================================
RCS file: /home/jwe/src/master/octave/src/input.cc,v
retrieving revision 1.90
diff -c -r1.90 input.cc
*** input.cc	1996/11/05 21:46:06	1.90
--- input.cc	1997/01/23 03:09:43
***************
*** 387,393 ****
  {
    int do_echo = reading_script_file ?
      (Vecho_executing_commands & ECHO_SCRIPTS)
!       : (Vecho_executing_commands & ECHO_CMD_LINE);
  
    if (do_echo)
      {
--- 387,393 ----
  {
    int do_echo = reading_script_file ?
      (Vecho_executing_commands & ECHO_SCRIPTS)
!       : (Vecho_executing_commands & ECHO_CMD_LINE) && ! forced_interactive;
  
    if (do_echo)
      {
***************
*** 430,436 ****
    else
      {
        if (s && *s && (interactive || forced_interactive))
! 	fprintf (rl_outstream, s);
  
        FILE *curr_stream = rl_instream;
        if (reading_fcn_file || reading_script_file)
--- 430,439 ----
    else
      {
        if (s && *s && (interactive || forced_interactive))
! 	{
! 	  fprintf (rl_outstream, s);
! 	  fflush (rl_outstream);
! 	}
  
        FILE *curr_stream = rl_instream;
        if (reading_fcn_file || reading_script_file)
***************
*** 493,503 ****
  
        string prompt = decode_prompt_string (ps);
  
!       if (interactive)
! 	{
! 	  pipe_handler_error_count = 0;
! 	  flush_octave_stdout ();
! 	}
  
        octave_diary << prompt;
  
--- 496,504 ----
  
        string prompt = decode_prompt_string (ps);
  
!       pipe_handler_error_count = 0;
! 
!       flush_octave_stdout ();
  
        octave_diary << prompt;