Cake.CoreCLR can't handle whitespace in path

[bjorkstromm]

Steps to reproduce:

C:\temp> mkdir "some path"
C:\temp> cd '.\some path\'
C:\temp\some path> nuget install Cake.CoreCLR -o tools
C:\temp\some path> echo 'Information("Hello World");' > build.cake
C:\temp\some path> dotnet .\tools\Cake.CoreCLR.0.29.0\Cake.dll
Error: Could not find a part of the path 'C:\temp\some path\path\tools\Cake.CoreCLR.0.29.0'.

Notice how the path is duplicated in the above path.

//cc @gep13

[bjorkstromm]

Fun fact, if you have more than one whitespace in your path, you'll get another error message.

C:\temp\some other path> dotnet .\tools\Cake.CoreCLR.0.29.0\Cake.dll
More than one build script specified.
For usage, use parameter --help

[bjorkstromm]

I believe issue is this

cake/src/Cake/Polyfill/EnvironmentHelper.cs

Line 15 in a49462f

return string.Join(" ", Environment.GetCommandLineArgs());

[jnm2]

Related to #1272, which I can't seem to find the time for. 😢

[gep13]

@mholo65 did you have a plan for how this one can get fixed?

[bjorkstromm]

@gep13, no more than a ugly quick hack 😄 But might be good enough for 0.30.0