#1 was fixed  with http://hg.savannah.gnu.org/hgweb/octave/rev/8449cc186059, however wont appear unil the gui-release branch is used.

Pushed patch to gui-release:
http://hg.savannah.gnu.org/hgweb/octave/rev/724fc0a9eeb1

Nirmal, in comment #4 you are saying:
"I remember naming the file and saving it".
What do you mean by this?

How about this to prompt if there is an issue attempting to run the custom editor.

I've tested in Windows, but not Linux yet.



(file #31835)

Works under WInXP 64bit for me, using octave-3.8.1-5-installer.exe from mxeoctave.osuv.de.

So we are both doing the same thing:

1) Verify use custom editor is not selected.
2) Open c:\octavoctave-3.8.1\src\build_packages.m
3) Open the editor styles preferences, change the default background color (far right color box in each row) to a color (green??) and press OK.
Does the test background all change?

Next:
1) change the use custom editor to:
c:\windows\notepad %f
2) press ok, and double click on a .m file from the  file browser window in octave.

Issue 3 :  Yes, i figured that i can get out of the infinte loop, by pressing  NO.  But, the issue still stands, because there may be  people who really want to click on YES.

Issue 4:  As i have mentioned,  this issue only surfaces soon after a fresh installation.  The color changes are working, once it is installed, exited, and then octave restarted.  I remember naming the file and saving it. After installation, you can test it on Windows XP (if you have a machine available). Not a big issue, but i thought i will report it anyways.

Issue 5: I am a software developer. So i tried all the standard tricks like giving the full pathname, and trying various styles of slashes (since I am on MS-Windows XP), to get to the file.  I have two executables  installed  at 
C:\Program Files\GNU\vim\vim74\...
I checked on the checkbox that says "USE CUSTOM FILE EDITOR" and tried  vim.exe as well as gvim.exe.  Both of these were the latest releases of GUI vim for MS-Windows platform. Today, i noticed that once i change to "USE custom file editor", if i do not exit Octave, and immediately try to "OPEN A FILE", nothing happens, and no error message is given either. System simply shows an empty Editor tab, with standard menu options at top.

3. This is a special case because you are editing the file where octave stores the most recent files that were opened in the editor. In the first message box, press "Yes" to reload the file where "qt-settings" was stored as most recent file. In the next message box press "No" because the most recent file was just overwritten with the same entry.

I have pushed a changeset (gui-release) that checks if the first entry in the mru list is already the actual file name. This prevent the second and all following message boxes.

I installed the version, that is clearly tagged as "non-release" version that is under development.  But i needed the GUI in MS Windows platform, and so, i installed it to test it. Following are the bugs i noticed:


1.  Changing color of command window, at program startup, did not change background color properly.

2.  Run the following script. Then press control-C twice when it pauses. We get prompt. Press Control-C again to abort.
Now press control-c again, to see program crash.

clear ; close all; clc
%% ==================== Part 1: Basic Function ====================
fprintf('Running warmUpExercise ... \n');
fprintf('5x5 Identity Matrix: \n');

fprintf('Program paused. Press enter to continue.\n');
pause;

3.  File->Recent Editor Files->open qt-settings  file  (present under $HOME/.config  directory.    Pop up window says "It seems .... file has been modified by another program.   Do you want to reload it ? "  Click on  YES, to see the infinite loop.
   
4.  Editor style preferences are not working. (forground/background color- default)
    Once applied,  the windows that are currently open, should change color.
    I noticed this, soon after installation, when i went to change settings, before
    i started using the editor. There was only one file open (this text file) at this time.
   

5.  Last, but most important for me:  File Menu -> Preferences -> Editor  tab ->  Use Custom Editor,  is not working. I tried both  vim.exe  and  gvim.exe  which are installed on my MS-Windows XP  machine.  Both are not working.  Default editor seems to work, but does not have features that a developer needs.

Keep up the good work. I appreciate all the work you guys are doing, and providing this free software.