Piping into things that don't read all their input (e.g. head) should not result in an error.

[clonezone]

E.g., with v0.6.0, bat --list-languages | head results in

…
thread 'main' panicked at 'failed printing to stdout: Broken pipe (os error 32)', libstd/io/stdio.rs:692:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.

on both macOS and Linux.

[sharkdp]

Thank you for reporting this.

We have fixed this for bat's general behavior (see #9 and 1f2bcf5), so things like bat README.md | head work fine, but we should also fix this when using --list-languages and --list-themes and probably the bat cache subcommand as well.

The strategy is simple. Just replace all print!(...) and println!(...) macros by write!(...)? and writeln!(...)?.