improvement for error message.

[Christian Bauer]

Hi!

On Tue, Sep 16, 2003 at 04:40:07PM +0000, Chris Dams wrote:
> In the function ex::subs(const ex & e, unsigned options) if the first
> argument is neither a relation_equal nor a list, the error message
> "basic::subs(ex): argument must be a list" gets thrown. I think it would
> be a good idea to change this into "basic::subs(ex): argument must be a
> relation_equal or list".

Done. :)

Bye,
Christian

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