[Octave-bug-tracker] [bug #63556] error() function shows traceback messages when error message end with newline in special cases

[Markus Mützel]

Update of bug #63556 (project octave):

              Item Group:       Inaccurate Result => Documentation          
                  Status:                    None => Confirmed              
         Planned Release:                    None => 8.1.0 (current stable) 

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Follow-up Comment #2:

Single-quoted strings behave the same in Octave and in Matlab.
Double-quoted strings used to be Octave-specific and differ from single-quoted
strings in that escape sequences (like "\n") are evaluated (like `fprintf`
does). E.g., compare the result of `numel('\n')` with `numel("\n")` in
Octave.
(Unrelated to this issue: Double-quotes now create string objects in Matlab.
Those are incompatible to Octave's double-quoted strings.)

The error function works like `fprintf` only if there are additional arguments
after the template. That means the examples that use one single single-quoted
input argument don't end with a newline character. But they end with "n".
Hence, the traceback is included in the displayed error message.

The documentation could probably be improved to better point that out.




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