Feature flagged out the text module

Cargo.toml

@@ -13,7 +13,8 @@ readme = "README.md"
 all-features = true
 
 [features]
-default = []
+default = ["text"]
+text = []
 unicode = ["unicode-segmentation"]
 
 [dev-dependencies]

Makefile

@@ -7,7 +7,9 @@ doc:
 	@cargo doc --all-features
 
 test:
+	@cargo test
 	@cargo test --all-features
+	@cargo test --no-default-features
 
 format:
 	@rustup component add rustfmt 2> /dev/null

src/lib.rs

@@ -1,12 +1,13 @@
 //! This crate implements diffing utilities.  It attempts to provide an abstraction
 //! interface over different types of diffing algorithms.  It's based on the
 //! the diff algorithm implementations of [pijul](https://pijul.org/).
-
 //! ```rust
+//! # #[cfg(feature = "text")] {
 //! use similar::text::TextDiff;
 //! # let old_text = "";
 //! # let new_text = "";
 //! let diff = TextDiff::from_chars("Hello World", "Hallo Welt");
+//! # }
 //! ```
 //!
 //! ## Functionality
@@ -17,13 +18,15 @@
 //! * [`text`]: This extends the general diffing functionality to text (and more
 //!   specifically line) based diff operations.
 //!
-//! ## Optional Features
+//! ## Features
 //!
 //! The crate by default does not have any dependencies however for some use
-//! cases it's useful to pull in extra functionality:
+//! cases it's useful to pull in extra functionality.  Likewise you can turn
+//! off some functionality.
 //!
 //! * `unicode`: when this feature is enabled the text diffing functionality
 //!   gains the ability to diff on a grapheme instead of character level.  This
 //!   is particularly useful when working with text containing emojis.
+//! * `text`: this feature is enabled by default and enables the [`text`] module.
 pub mod algorithms;
 pub mod text;

src/text.rs

@@ -47,6 +47,7 @@
 //!
 //! Because the [`TextDiff::grouped_ops`] method can isolate clusters of changes
 //! this even works for very long files if paired with this method.
+#![cfg(feature = "text")]
 use std::borrow::Cow;
 use std::fmt;
 use std::io;