Clap: Enable colored error messages

Cargo.lock

@@ -134,12 +134,14 @@ version = "3.0.0-rc.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "967965e82fc46fee1a88147a7a977a66d615ed5f83eb95b18577b342c08f90ff"
 dependencies = [
+ "atty",
  "bitflags",
  "clap_derive",
  "indexmap",
  "lazy_static",
  "os_str_bytes",
  "strsim 0.10.0",
+ "termcolor",
  "textwrap",
 ]
 

Cargo.toml

@@ -22,7 +22,7 @@ path = "src/main.rs"
 ansi_term = "0.12.0"
 app_dirs = { version = "2", package = "app_dirs2" }
 atty = "0.2"
-clap = { version = "3.0.0-rc.4", features = ["std", "derive", "suggestions" ], default-features = false }
+clap = { version = "3.0.0-rc.4", features = ["std", "derive", "suggestions", "color"], default-features = false }
 env_logger = { version = "0.9", optional = true }
 log = "0.4"
 reqwest = { version = "0.11.3", features = ["blocking", "rustls-tls", "rustls-tls-native-roots"], default-features = false }

src/main.rs

@@ -57,6 +57,7 @@ const ARCHIVE_URL: &str = "https://tldr.sh/assets/tldr.zip";
 #[clap(about = "A fast TLDR client", author, version)]
 #[clap(setting = AppSettings::ArgRequiredElseHelp)]
 #[clap(setting = AppSettings::DeriveDisplayOrder)]
+#[clap(setting = AppSettings::DisableColoredHelp)]
 #[clap(
     after_help = "To view the user documentation, please visit https://dbrgn.github.io/tealdeer/."
 )]