Hm, that must mean everyone I know is using zsh and I didn't realize that... that strongly suggests I should use it too!

Specifically, most people use oh-my-zsh, which is a preconfigured set of zsh plugins and various other settings[1] with the autosuggestions[2] plugin.

1 - https://github.com/robbyrussell/oh-my-zsh

2 - https://github.com/zsh-users/zsh-autosuggestions

oh-my-zsh has more than six hundred open pull requests, and can be considered unmaintained. It is perfectly usable in most respects, and I would not expect that to change in the near future. However, some competing projects have started because of that, and may be worth consideration.

https://github.com/sorin-ionescu/prezto https://github.com/zsh-users/antigen See also: https://github.com/unixorn/awesome-zsh-plugins

Zsh and fish are, imo, much better environments than bash. And bash, once tamed, due to its ubiquity, is a better choice for scripting.

People should realize terminal and scripting don't need to be done using same shell.

I use fish for scripting but run zsh for terminal. (fish had couple weirdness in day to day terminal use and zsh could do pretty much all fish could do with zplug.)

not my choice. certainly less people suffer bash in the BSD world.

while bashims may give additional features, readability and portability suffers. I much prefer scripts using a posixish #!/bin/sh and a strict subset of shell syntax. something like pdfx.

That's why I emphasized "choice", using sh for scripting is a valid choice.