When I build my C# code in Visual Studio 2015 using the default compiler (nothing unusual about the project), I get output in the output window that looks a bit like this. (The actual width isn't representative, as I've replaced the rather long path with XXX.)
1>XXX(402,13,402,16): error CS1955: Non-invocable member 'Lo
1>g' cannot be used like a method.
1>XXX(424,25,424,28): error CS1955: Non-invocable member 'Lo
1>g' cannot be used like a method.
Presumably the compiler is printing Non-invocable member 'Log' cannot be used like a method, and something, somewhere, is stepping in and popping newlines in (at column 120 in practice - as mentioned, column counts in my example output are unrepresentative).
Can I stop this? If so, how?
I'd much prefer the messages to be printed out with newlines in natural places, so I can use the output window's word wrap functionality.
After you open the Package Manager Console, build output starts to become wrapped as above.
The fix appears to be to restart Visual Studio.