bugGNU Octave - Bugs: bug #57469, F9 with escape sequences...

 
 

bug #57469: F9 with escape sequences ("\n", "\t", etc.) leads to unexpected results

Submitted by:  Markus Mützel <mmuetzel>
Submitted on:  Mon 23 Dec 2019 10:31:53 AM UTC  
 
Category:  GUI Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  Closed
Release:  dev Operating System:  Any

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Sun 05 Jan 2020 07:19:08 PM UTC, comment #3: 
Torsten Lilge <ttl>
Project Member
Mon 23 Dec 2019 04:29:24 PM UTC, comment #2: 

It is not just newlines, it seems to be any one of the special escape sequences.  I tried "\t" for tab and the output is printed and then immediately deleted.

Test string

printf ("  %-30s %6d\tafter_tab", "PASS", 8);

On the other hand, if I copy and paste this text in to the Command Window and hit enter it runs correctly.  So, if there is a way to have F9 pass the results more directly to the interpreter that might help.

Also, I can get rid of the newline on the command window by double escaping it in the Editor like so

printf ("  %-30s %6d\\njunk", "PASS", 8);

But this still doesn't print the results of executing the statement.

Rik <rik5>
Project Administrator
Mon 23 Dec 2019 11:49:37 AM UTC, comment #1: 

It doesn't matter if the string is single or double quoted.
Changing summary accordingly.

Markus Mützel <mmuetzel>
Project Member
Mon 23 Dec 2019 10:31:53 AM UTC, original submission:  

Marking the following string in the editor and hitting F9 leads to an unexpected result:

      printf ("  %-30s %6d\n", "PASS", 8);

The result in the command window is:

>>       printf ("  %-30s %6d
", "PASS", dp);
  %-30s %6d

The expected result is:

>>       printf ("  %-30s %6d\n", "PASS", dp);
  PASS                                8

Markus Mützel <mmuetzel>
Project Member

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2020-01-05 ttl StatusConfirmed => Fixed
        Open/ClosedOpen => Closed
    2019-12-23 rik5 StatusNone => Confirmed
        SummaryF9 with new line in strings leads to unexpected result => F9 with escape sequences ("\n", "\t", etc.) leads to unexpected results
    2019-12-23 mmuetzel SummaryF9 with double quoted strings leads to unexpected result => F9 with new line in strings leads to unexpected result

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