Add and implement the space-discarding feature

Author: isuffix

Cargo.lock

@@ -12,13 +12,15 @@ categories = ["encoding", "text-processing"]
 keywords = ["unicode", "symbols"]
 
 [features]
-default = ["numeral-systems", "styling"]
+default = ["numeral-systems", "styling", "space-discarding"]
 numeral-systems = ["dep:chinese-number"]
 styling = []
+space-discarding = ["dep:icu_properties"]
 _test-unicode-conformance = ["dep:ureq", "dep:rustls-webpki"]
 
 [dependencies]
 chinese-number = { version = "0.7.7", default-features = false, features = ["number-to-chinese"], optional = true }
+icu_properties = { version = "2.2.0", optional = true }
 
 [dev-dependencies]
 siphasher = "1.0.2"

Cargo.toml

@@ -17,6 +17,9 @@ pub mod numeral_systems;
 #[cfg(feature = "styling")]
 pub mod styling;
 
+#[cfg(feature = "space-discarding")]
+pub mod space_discarding;
+
 /// A module of definitions.
 #[derive(Debug, Copy, Clone)]
 pub struct Module(&'static [(&'static str, Binding)]);