bugGNU Octave - Bugs: bug #49703, arrow keys, backspace and tab are...


bug #49703: arrow keys, backspace and tab are not available

Submitted by:  None
Submitted on:  Sat 26 Nov 2016 01:22:28 PM UTC  
Category:  GUI Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Performance
Status:  None Assigned to:  None
Originator Name:  zjb Originator Email:  -email is unavailable-
Open/Closed:  Open Release:  4.2.0
Operating System:  Microsoft Windows

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( Jump to the original submission)

Tue 05 Mar 2019 06:07:38 AM UTC, comment #16: 

“Disable global shortcuts when Command Window has focus” is indeed checked.

Andrew Janke <apjanke>
Mon 14 Jan 2019 06:03:42 PM UTC, comment #15: 

Have you checked the preference "Disable global shortcuts when Command Window has focus"?

Moreover, the underlying terminal implementations for the console widgets are completely different on Windows and Mac/Linux.

Torsten Lilge <ttl>
Project Member
Mon 14 Jan 2019 10:00:46 AM UTC, comment #14: 

Interestingly, the "Ctrl-X to display control sequences" seems to work on Windows. (Tested on Windows 10 VM using Octave 4.4.1.) Though it reports the same sequence for any modified arrow press. Maybe the macOS build is intercepting Ctrl-whatever keypresses before they make it to the QTerminal widget.

Andrew Janke <apjanke>
Sat 12 Jan 2019 06:12:43 AM UTC, comment #13: 

I'm having a little luck modifying my ~/.inputrc file to configure how the Command Window behaves: I've been able to set some completion options in it. Maybe I could use that to define how Ctrl-arrow and the like behave.

Is there a way in the Command Window (that's a QTerminal, right?) to echo back the literal control sequence it is receiving, like you can in some terminals (like iTerm and Terminal.app) by hitting Ctrl-X and then pressing a key combination?

Andrew Janke <apjanke>
Fri 11 Jan 2019 11:23:16 PM UTC, comment #12: 

This only happens in the command window. In the editor, arrow keys with modifiers behave exactly as I would expect/like.

Andrew Janke <apjanke>
Fri 11 Jan 2019 08:22:04 PM UTC, comment #11: 

@Andrew: Does this only happen in the command window, or also in the editor? Actually, the command window only provides few key navigation facilities.

Torsten Lilge <ttl>
Project Member
Fri 11 Jan 2019 12:32:17 PM UTC, comment #10: 

Also, shift-arrow does nothing. I would expect that to expand the selection, and to move by words when done as ctrl-shift-arrow or alt-shift-arrow.

Andrew Janke <apjanke>
Fri 11 Jan 2019 12:31:17 PM UTC, comment #9: 

I'm having a similar issue on Mac.

The arrow keys work on their own. But modified arrow keys (Ctrl-arrow, Alt-arrow, Cmd-arrow) still only move one character at a time. On a Mac, I would expect Ctrl-arrow and/or Alt-arrow to move one word at a time, and Cmd-arrow to move to the start or end of the line.

Also, clicking in the current line in the command window doesn't move the cursor, like I would expect. I can click and drag to select text, but not click to move the cursor.

Is there a way to enable these arrow controls on Mac?

macOS 10.13.6, Octave 4.4.1, installed via Octave.app (4.4.1-beta3).

My environment:

>> system('env')
GS_OPTIONS=-sICCProfilesDir=/Applications/Octave-4.4.1.app/Contents/Resources/usr/opt/ghostscript_9.25_0/share/ghostscript//iccprofiles/ -sGenericResourceDir=/Applications/Octave-4.4.1.app/Contents/Resources/usr/opt/ghostscript_9.25_0/share/ghostscript//Resource/ -sFontResourceDir=/Applications/Octave-4.4.1.app/Contents/Resources/usr/opt/ghostscript_9.25_0/share/ghostscript//Resource/Font

Andrew Janke <apjanke>
Thu 15 Dec 2016 01:15:22 PM UTC, comment #8: 



(the second is empty)
the charset is a Chinese charset because I choose zh_cn in language settings.But I have tried en_us and the problem is still there.

Also,I remove qt-settings but nothing happen except the welcome window pop up.Actually,I met the problem just after I installed octave, with no settings changed.

Tue 13 Dec 2016 01:17:35 PM UTC, comment #7: 

Works fine for me

You could try removing  qt-settings from  %USERPROFILE%\.config\octave\

and see if that helps

Also what do these return:


John Donoghue <lostbard>
Project Member
Tue 13 Dec 2016 12:17:10 PM UTC, comment #6: 

ans = windows

It's the same in both CLI mode and GUI mode when I run getenv term/gnuterm, while in CLI mode these problems don't exist.

Mon 12 Dec 2016 03:28:29 PM UTC, comment #5: 



John Donoghue <lostbard>
Project Member
Mon 12 Dec 2016 02:50:46 PM UTC, comment #4: 

>> getenv('TERM')

ans = cygwin

Mon 12 Dec 2016 12:45:08 PM UTC, comment #3: 

In the command window, what does it display if you run the command:


John Donoghue <lostbard>
Project Member
Mon 12 Dec 2016 08:37:50 AM UTC, comment #2: 

I install octave from the official installer, and just click the shortcut “octave (gui)”in the start menu to run it, on win10 platform.

Sun 11 Dec 2016 03:17:39 PM UTC, comment #1: 

Did you install from the official installer or the zip file, and how are you running octave ?

John Donoghue <lostbard>
Project Member
Sat 26 Nov 2016 01:22:28 PM UTC, original submission:  

When I press arrow keys, backspace and tab in the GUI command mode, just some strange things will happen, such as the last two characters will swap or "[A[B[C[D" will appear(arrow keys). Of course this is not I want.These problems make it so hard to use command mode in GUI. Also, the mouse cannot be used to move the cursor freely. Anyway, edit a simple command is much easier in MATLAB.



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