Support range formatting

[fredrikekre]

This patch implements the --lines=a:b command line argument for
limiting the formatting to the line range a:b. Multiple ranges are
supported. Close #114.

Examples:

$ cat main.jl
function f(a,b,c,d)
  a  +  b  +  c  +  d
end

$ ./bin/runic --lines=1:1 main.jl
function f(a, b, c, d)
  a  +  b  +  c  +  d
end

$ ./bin/runic --lines=2:2 main.jl
function f(a,b,c,d)
    return a + b + c + d
end

[codecov]

Codecov Report

Attention: Patch coverage is 96.73913% with 3 lines in your changes missing coverage. Please review.

Project coverage is 93.91%. Comparing base (d66286d) to head (78cbef2).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/main.jl	91.30%	2 Missing ⚠️
src/Runic.jl	98.52%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #120      +/-   ##
==========================================
+ Coverage   93.84%   93.91%   +0.06%     
==========================================
  Files           8        8              
  Lines        3687     3778      +91     
==========================================
+ Hits         3460     3548      +88     
- Misses        227      230       +3     

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[fredrikekre]

cc @maleadt

Do you envision having some wrapper around this for figuring out what to pass similar to git-clang-format?

[maleadt]

Thanks! I was working with the following wrapper, based on git-clang-format: https://gist.github.com/maleadt/13c760a7318c502f7bd45ce82b92f072

[fredrikekre]

Cool. I wonder if it can be distributed by Runic? Perhaps a CLI flag that outputs that file to stdout? I have thought about having a flag to output a bash shim for runic too.

[maleadt]

Where would you install it though? You 'simply' need git-runic with the above contents on PATH, so the file could just reside in res here, but it's not going to be easy to figure out a user-writable PATH entry without dealing with a whole lot...

[fredrikekre]

I had something like this in mind:

$ runic --output-bin=git-runic > ~/.local/bin/git-runic

$ chmod +x ~/.local/bin/git-runic

[maleadt]

That, or runic setup-git --path=~/.local/bin

In any case, it'd be nice if the file could be kept up to date, so that updating Runic.jl also updates the git integration.

[fredrikekre]

That would probably be much simpler after JuliaLang/Pkg.jl#3772. Runic would then provide two installable and upgradable apps: runic and runic-git.

In any case I think it would be good to include that file in the repo here and keep it up to date (although it probably wouldn't change much?).