Merge pull request #403 from robinkrahl/example-features

Configure required features for examples

Cargo.toml

@@ -12,6 +12,14 @@ license = "MIT"
 edition = "2018"
 exclude = [".github/", ".gitignore", "benches/", "examples/", "fuzz/", "images/"]
 
+[[example]]
+name = "hyphenation"
+required-features = ["hyphenation"]
+
+[[example]]
+name = "termwidth"
+required-features = ["terminal_size"]
+
 [package.metadata.docs.rs]
 all-features = true
 

examples/hyphenation.rs

@@ -1,14 +1,5 @@
-#[cfg(feature = "hyphenation")]
 use hyphenation::{Language, Load, Standard};
 
-#[cfg(not(feature = "hyphenation"))]
-fn main() {
-    println!("Please run this example as");
-    println!();
-    println!("  cargo run --example hyphenation --features hyphenation");
-}
-
-#[cfg(feature = "hyphenation")]
 fn main() {
     let text = "textwrap: a small library for wrapping text.";
     let dictionary = Standard::from_embedded(Language::EnglishUS).unwrap();

examples/termwidth.rs

@@ -1,12 +1,5 @@
-#[cfg(feature = "terminal_size")]
 use textwrap::{fill, Options};
 
-#[cfg(not(feature = "terminal_size"))]
-fn main() {
-    println!("Please enable the terminal_size Cargo feature to run this example.");
-}
-
-#[cfg(feature = "terminal_size")]
 fn main() {
     let example = "Memory safety without garbage collection. \
                    Concurrency without data races. \