Fix doc/comment typos

book/src/filter_mutants.md

@@ -20,7 +20,7 @@ Within this name, your regex can match any substring, including for example:
 - The trait, `impl Serialize`
 - The struct name, `ScenarioOutcome`
 - The function name, `serialize`
-- The mutated return value, `with Ok(Defualt::default())`, or any part of it.
+- The mutated return value, `with Ok(Default::default())`, or any part of it.
 
 The regex matches a substring, but can be anchored with `^` and `$` to require that
 it match the whole name.

book/src/limitations.md

@@ -51,7 +51,7 @@ cargo-mutants contains two main categories of code, which are mostly independent
 
 2. Code for finding the modules to mutate and their source files, finding the tree to copy, adjusting paths after it is copied, and finally running builds and tests. This is very Cargo-specific, but should not be too hard to generalize.
 
-The main precondition for supporting Bazel is a realistc test case: preferably an open source Rust tree built with Bazel, or at least a contributor with a Bazel-based Rust tree who is willing to help test and debug and to produce some test cases.
+The main precondition for supporting Bazel is a realistic test case: preferably an open source Rust tree built with Bazel, or at least a contributor with a Bazel-based Rust tree who is willing to help test and debug and to produce some test cases.
 
 (See <https://github.com/sourcefrog/cargo-mutants/issues/77> for more discussion.)
 

book/src/shards.md

@@ -60,7 +60,7 @@ Then, for each mutant in its shard, it does an incremental build and runs all th
 
 Each shard runs the same number of mutants, +/-1. Typically this will mean they each take roughly the same amount of time, although it's possible that some shards are unlucky in drawing mutants that happen to take longer to test.
 
-A rough model for the overall execution time for all of the shards, allowing for this work occuring in parallel, is
+A rough model for the overall execution time for all of the shards, allowing for this work occurring in parallel, is
 
 ```raw
 SHARD_STARTUP + (CLEAN_BUILD + TEST) + (N_MUTANTS/K) * (INCREMENTAL_BUILD + TEST)

src/fnvalue.rs

@@ -408,7 +408,7 @@ fn path_is_nonzero_unsigned(path: &Path) -> bool {
 /// If this is a path ending in `expected_ident`, return the first type argument, ignoring
 /// lifetimes.
 fn match_first_type_arg<'p>(path: &'p Path, expected_ident: &str) -> Option<&'p Type> {
-    // TODO: Maybe match only things witn one arg?
+    // TODO: Maybe match only things with one arg?
     let last = path.segments.last()?;
     if last.ident == expected_ident {
         if let PathArguments::AngleBracketed(AngleBracketedGenericArguments { args, .. }) =
@@ -610,7 +610,7 @@ mod test {
     #[test]
     fn unknown_container_replacement() {
         // This looks like something that holds a &str, and maybe can be constructed
-        // from a &str, but we don't know anythig else about it, so we just guess.
+        // from a &str, but we don't know anything else about it, so we just guess.
         check_replacements(
             parse_quote! { -> UnknownContainer<'static, str> },
             &[],