Review

src/lib.rs

@@ -217,17 +217,14 @@ impl AutoCfg {
     /// The test code is subject to change, but currently looks like:
     ///
     /// ```ignore
-    /// extern crate CRATE as dummy; // `as _` wasn't stabilized until Rust 1.33
+    /// extern crate CRATE as probe; // `as _` wasn't stabilized until Rust 1.33
     /// ```
     pub fn probe_sysroot_crate(&self, name: &str) -> bool {
-        self.probe(format!("extern crate {} as dummy;", name))
+        self.probe(format!("extern crate {} as probe;", name))
             .unwrap_or(false)
     }
 
-    /// Emits a config value `has_PATH` if `probe_sysroot_crate` returns true.
-    ///
-    /// Any non-identifier characters in the `path` will be replaced with
-    /// `_` in the generated config value.
+    /// Emits a config value `has_CRATE` if `probe_sysroot_crate` returns true.
     pub fn emit_sysroot_crate(&self, name: &str) {
         if self.probe_sysroot_crate(name) {
             emit(&format!("has_{}", mangle(name)));