Type annotations required for as_ref

[tathanhdinh]

I've found error when compiling bat with rustc 1.28.0-nightly:

error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
  --> src/features.rs:50:43
   |
50 |             print!("{}", Green.paint(word.as_ref()));
   |                                           ^^^^^^

error: aborting due to previous error

that seems because of changes in type inference on nightly and beta (others found similar problems).

IMHO, that is because of there are two possibilities for type of word.as_ref(): &str and &[u8] ; this can be "fixed" using slice notation, like that:

print!("{}", Green.paint(&word[..]));

which will compile on both stable and nightly.

[sharkdp]

Thank you for taking the time to report this!

[tathanhdinh]

Many thanks!!!
I can make a PR if you don't mind.

[sharkdp]

Sounds great!

[sharkdp]

Closed via #153