I did come across this work by clap while doing research for this post. The major difference in strategy is that clap is generating completion scripts in Bash,

I did come across this work by clap while doing research for this post. The major difference in strategy is that clap is generating completion scripts in Bash, while shell_completion is a library which helps writing completion scripts in Rust. I think one exciting bit of future potential for shell_completion is it could potentially allow building something like what clap has done using the standard Rust macro system. In any event, thanks for bringing this up.