Adding revamped bin/format.jl

[colinxs]

I had a script I've been using as a CLI version of JuliaFormatter.jl that I figured you might be interested in.

Advantages over the existing format.jl are:

• Full support for all the arguments of JuliaFormatter.format_text
• Can handle stdin and paths
• Fancy shebang so that script can be directly executable

Downsides:

• Slightly slower startup because of ArgParse

Examples:

./bin/jlfmt ~/tmp/StaticArrays.jl/src/StaticArrays.jl --style blue -o indent 2 -o import_to_using true
cat ~/tmp/StaticArrays.jl/src/StaticArrays.jl | ./bin/jlfmt --style yas

It's only user has been me so it's seen minimal testing but it's fairly simple. Feel free to change however.

[domluna]

@colinxs how do you use this from a fresh setup? Copy the contents in the bin folder locally and use that?

[colinxs]

I personally use NixOS/Nix which makes bundling jlfmt and it's dependencies without fully compiling it like PackageCompiler.jl pretty easy. Outside of the ecosystem I'm not sure. Julia could really benefit by providing a mechanism for publishing executable scripts like Python does. I think PackageCompiler.jl is the only real choice, and has the benefit of fixing the slow startup which I know is a painpoint for many. I compiled a package ton too long ago and the new, revamped PackageCompiler.jl is fairly pain free.