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Re: confusing "invalid use of end" message in octave-4.2.2

From: Nicholas Jankowski
Subject: Re: confusing "invalid use of end" message in octave-4.2.2
Date: Wed, 15 May 2019 09:25:49 -0500

On Tue, May 14, 2019 at 22:49 Sergei Steshenko via Help-octave <address@hidden> wrote:
Hello All,

here is a simple example of interactive session demonstrating the probblem:


octave:1> foo(end)
error: invalid use of end
octave:1> version
ans = 4.2.2

The truth is that 'foo' is undefined, but instead of stating this
clearly first Octave just prints "error: invalid use of end".

In real life I've stumbled upon this using 'plot' commands with some
undefined variables, and it was difficult to find out which exactly
variable was undefined.


Interesting. Matlab returns an Undefined Function error.  Not sure why the parser picks end to complain about first.

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