doc(inline/iter_strings_lossy): describe different behaviors (#52)

src/text/inline.rs

@@ -147,6 +147,12 @@ impl<'s, T: DiffableStr + ?Sized> InlineChange<'s, T> {
     ///
     /// Each item is a tuple in the form `(emphasized, value)` where `emphasized`
     /// is true if it should be highlighted as an inline diff.
+    ///
+    /// By default, words are split by whitespace, which results in coarser diff.
+    /// For example: `"f(x) y"` is tokenized as `["f(x)", "y"]`.
+    ///
+    /// If you want it to be tokenized instead as `["f(", "x", ")"]`,
+    /// you should enable the `"unicode"` flag.
     pub fn iter_strings_lossy(&self) -> impl Iterator<Item = (bool, Cow<'_, str>)> {
         self.values()
             .iter()