Spurious space after command in ConTeXt

Is it possible to define a macro in ConTeXt which gobbles space after the argument? For example, given this input:

defthing{dosingleargumentdothing}
defdothing[#1]{thing#1}

starttext

thing[hello]
thing[world]

stoptext

This produces the following output:

But, ideally, I’d like it to run together, like this:

I realise I can use thing[hello]%, but just wondering whether there’s something easy I may have missed here. These thing commands are currently being generated by a script. I could configure the script to output the %, but the TeX file is likely to be tweaked by hand afterwards, where it’s possible the % may end up missing, and then the space appears again, so I’d like to try and reduce this possible human error and keep the TeX file looking tidy.

defthing{dosingleargumentdothing}
defdothing[#1]{thing#1ignorespaces}