On 3/23/20 8:01 AM, Zack Weinberg wrote:
If I were writing the patches they would go something like this: Change _AS_DETECT_BETTER_SHELL so that if there is more than one shell that supports all of the "as_required" features, it prefers a shell that doesn't set either BASH_VERSION or ZSH_VERSION, even if that one doesn't support all of the "as_suggested" features.
I'm a bit dubious, partly because this horse left the barn so long ago that its tail has disappeared over the horizon, and partly because the Autoconf Way is that people should be able to use the current platform's extensions if they're available.