fix!: Rename termcolor/atty features

This makes it easier to change dependencies in the future.

BREAKING CHANGE: `termcolor` -> `color` and `atty` -> `auto-color`

Cargo.toml

@@ -37,7 +37,11 @@ pre-release-replacements = [
 ]
 
 [features]
-default = ["termcolor", "atty", "humantime", "regex"]
+default = ["auto-color", "humantime", "regex"]
+color = ["dep:termcolor"]
+auto-color = ["dep:atty", "color"]
+humantime = ["dep:humantime"]
+regex = ["dep:regex"]
 
 [dependencies]
 log = { version = "0.4.8", features = ["std"] }

ci/src/main.rs

@@ -2,7 +2,7 @@ mod permute;
 mod task;
 
 fn main() {
-    let features = ["termcolor", "humantime", "atty", "regex"];
+    let features = ["color", "humantime", "auto-color", "regex"];
 
     // Run a default build
     if !task::test(Default::default()) {

examples/custom_format.rs

@@ -17,7 +17,7 @@ $ export MY_LOG_STYLE=never
 If you want to control the logging output completely, see the `custom_logger` example.
 */
 
-#[cfg(all(feature = "termcolor", feature = "humantime"))]
+#[cfg(all(feature = "color", feature = "humantime"))]
 fn main() {
     use env_logger::{fmt::Color, Builder, Env};
 
@@ -50,5 +50,5 @@ fn main() {
     log::info!("a log from `MyLogger`");
 }
 
-#[cfg(not(all(feature = "termcolor", feature = "humantime")))]
+#[cfg(not(all(feature = "color", feature = "humantime")))]
 fn main() {}

src/fmt/mod.rs

@@ -202,9 +202,9 @@ impl Builder {
     }
 }
 
-#[cfg(feature = "termcolor")]
+#[cfg(feature = "color")]
 type SubtleStyle = StyledValue<'static, &'static str>;
-#[cfg(not(feature = "termcolor"))]
+#[cfg(not(feature = "color"))]
 type SubtleStyle = &'static str;
 
 /// The default format.
@@ -233,7 +233,7 @@ impl<'a> DefaultFormat<'a> {
     }
 
     fn subtle_style(&self, text: &'static str) -> SubtleStyle {
-        #[cfg(feature = "termcolor")]
+        #[cfg(feature = "color")]
         {
             self.buf
                 .style()
@@ -242,7 +242,7 @@ impl<'a> DefaultFormat<'a> {
                 .clone()
                 .into_value(text)
         }
-        #[cfg(not(feature = "termcolor"))]
+        #[cfg(not(feature = "color"))]
         {
             text
         }
@@ -268,11 +268,11 @@ impl<'a> DefaultFormat<'a> {
         }
 
         let level = {
-            #[cfg(feature = "termcolor")]
+            #[cfg(feature = "color")]
             {
                 self.buf.default_styled_level(record.level())
             }
-            #[cfg(not(feature = "termcolor"))]
+            #[cfg(not(feature = "color"))]
             {
                 record.level()
             }

src/fmt/writer/atty.rs

@@ -1,13 +1,12 @@
 /*
 This internal module contains the terminal detection implementation.
 
-If the `atty` crate is available then we use it to detect whether we're
-attached to a particular TTY. If the `atty` crate is not available we
-assume we're not attached to anything. This effectively prevents styles
-from being printed.
+If the `auto-color` feature is enabled then we detect whether we're attached to a particular TTY.
+Otherwise, assume we're not attached to anything. This effectively prevents styles from being
+printed.
 */
 
-#[cfg(feature = "atty")]
+#[cfg(feature = "auto-color")]
 mod imp {
     pub(in crate::fmt) fn is_stdout() -> bool {
         atty::is(atty::Stream::Stdout)
@@ -18,7 +17,7 @@ mod imp {
     }
 }
 
-#[cfg(not(feature = "atty"))]
+#[cfg(not(feature = "auto-color"))]
 mod imp {
     pub(in crate::fmt) fn is_stdout() -> bool {
         false

src/fmt/writer/termcolor/mod.rs

@@ -5,8 +5,8 @@ Its public API is available when the `termcolor` crate is available.
 The terminal printing is shimmed when the `termcolor` crate is not available.
 */
 
-#[cfg_attr(feature = "termcolor", path = "extern_impl.rs")]
-#[cfg_attr(not(feature = "termcolor"), path = "shim_impl.rs")]
+#[cfg_attr(feature = "color", path = "extern_impl.rs")]
+#[cfg_attr(not(feature = "color"), path = "shim_impl.rs")]
 mod imp;
 
 pub(in crate::fmt) use self::imp::*;