Re: [NTG-context] How to avoid overriding a control sequence?

7 Mar 2016


      On 2016-03-07 18:47:20 +0000, luigi scarso said:
...
On Mon, Mar 7, 2016 at 7:40 PM, Nicola  wrote:
How do I check in ConTeXt whether a control sequence is already
defined (to avoid redefining it by accident)?
kind of 
\ifdefined\writebanner \else \unexpanded\def\writebanner{\writestring}     \fi
?
That works, thanks!

Nicola