Seeing this release makes me cringe. I've used Bash as an interactive shell for decades but really I'm sick and tired of it.

As a scripting language, I loathe it and really don't understand its purpose. I always write shell scripts in POSIX shell for portability reasons. Most of the time I don't need to use any of Bash's features. In cases where advanced features are needed and portability is not a concern, there are other scripting languages much better suited for this (Python, Ruby, etc).

As an interactive shell, the only features I ever use are command history and tab completion. Bash is way too bloated for my use case (it's only a matter of time before the next Shellshock is discovered). Other lightweight shells are missing the couple of interactive features which I do use.

If anyone knows of a shell which meets my criteria of being lightweight but with command history and tab completion (paths, command names and command arguments), I'd really appreciate any suggestions. Otherwise I may have to look into extending dash or something.

I would also love to know the answer to this question. I am a big fan of shells and shell programming in general and POSIX shell in particular.

Only suggestion I currently have is ksh, of which there are a few implementations, ksh93 still developed (https://github.com/att/ast), pdksh from OpenBSD (of which there is a portable version here: https://github.com/ibara/oksh) and MirBSD ksh (https://www.mirbsd.org/mksh.htm).

Otherwise of interest is mrsh: https://github.com/emersion/mrsh which was recently mentioned by Drew DeVault in a blog post linked here: https://news.ycombinator.com/item?id=18777909.

EDIT: And by mentioning mrsh, I meant it as a better/easier base to extend to get what you are asking for.