Following some perverse impulse, I found one of my very first OSS contributions as part of comp.sources.unix/volume1 (first contribution, first volume - that seems nicely symmetrical!) from back in 1985 (!).
I remember writing this code for absolutely no reason other than to see what a simple infinite-length string implementation might look like to write. I was young then.
[Much] older me now feels oddly compelled to check this into GitHub and make it compile on machines / OSes from the current century. I have no idea why, but then I also had no idea why I was writing this code at the time (see the legacy README) so this also seems like a symmetrical exercise. It's all about the symmetry.