Hola Mike,
In fact, Greg wanted a method to make something like 'hello world' and not 'helloSpaceworld' working in purePd style (I use the purePd [list-l2s] abs from 'list-abs' that i forget to join). So i just make a small patch to transform the 'Space' to ' ' (from [keyname]) in a sentence working with Pd vanilla.
For the other key like 'Shift_L' or 'Tab', etc. it's possible to add them in a [sel] object to make them inactive.
Or if you work with Pd-entended the [entry] object seems very nice ;)
I attach this last patch with abstractions (Pure Pd patch, working with Pd Vanilla) with new keys.
++
Jack