Add public method beforeSpawnProcess: (command, args, options) to Linter

[liigo]

Gives subclasses a chance to read or change the command, args and options, before creating new BufferedProcess while lintFile.

This is a backward compatible improvement.

Closes #289

PS: I'a a newbie of CoffeeScript .

[dmnd]

cool, can you link to the rust linter code that uses this?

[liigo]

@dmnd This is the forked repo I'm working on:

https://github.com/liigo/linter-rust/blob/master/lib/linter-rust.coffee#L62L72

I try to find file Cargo.toml (in @initCmd) to decide which command to use: either cargo or rustc. It works now to invoke cargo. Obviously there need more work to show errors and warnings that cargo reports.

[liigo]

@dmnd I also submitted a PR to Rust Linter: AtomLinter/linter-rust#5, which depends on this improvement.

[jhasse]

Any news on getting this merged?

[KingOfThePirates]

I would like news too :)

[iam4x]

Let's merge it, though @dmnd was on it since he answered first :)