[Octave-bug-tracker] [bug #37401] Multi-line command recall is weird in GUI editor; non-GUI is OK.

[Arun Giridhar]

URL:
  <http://savannah.gnu.org/bugs/?37401>

                 Summary: Multi-line command recall is weird in GUI editor;
non-GUI is OK.
                 Project: GNU Octave
            Submitted by: arungiridhar
            Submitted on: Wed 19 Sep 2012 05:12:37 PM EDT
                Category: GUI
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

Data: Ubuntu 12.04 32bit, running on Intel Core i5.

Steps to reproduce:

1. Start "octave --no-gui" and type a long multi-line command such as this
one:

clear all; clc; tic; n = 8; arr = textread("/usr/share/dict/words", "%s");
toc, arr = char(arr); whos, toc, arr = arr(arr(:,n)~=' ' & arr(:,n+1)=='
',1:n); whos, toc

You should get some output about the number of words and 8-letter words.

2. Now type "cl" at the prompt and press up arrow. It should recall the long
command just typed, and it will be formatted as before. Hitting return will
execute it normally.

3. Quit Octave and restart it with the GUI. Type "cl" and press up arrow. I
see very weird formatting on screen, where the cursor has gone to the previous
line and only the tail end of the command is visible. Hitting return executes
the command properly however.

This is reproducible for me with any long multi-line command, so if you have
something in your Octave history please try it out.

For further information, searching the history with Ctrl-R works in the
non-GUI mode but not in GUI; I suppose that the GNU readline library was
consciously suppressed in the GUI?




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