diff --git a/src/bin/main.rs b/src/bin/main.rs
index e0b3fc7..c91bb4f 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -62,7 +62,7 @@ fn main() {
         match user_doc {
             Ok(line) => {
                 rl.add_history_entry(line.as_str());
-                let  l = line.as_str().to_owned();
+                let l = line.as_str().to_owned();
 
                 match lex(&l) {
                     Ok(a) => match eval(&a, &mut syms) {
diff --git a/src/config.rs b/src/config.rs
index 8b563d1..ee0e95e 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -30,18 +30,18 @@ fn prompt_default_callback(_: &Seg, _: &mut SymTable) -> Result<Ctr, String> {
 /* loads defaults, evaluates config script */
 pub fn configure(filename: String, syms: &mut SymTable) -> Result<(), String> {
     /*syms.insert(
-        "CFG_RELISH_POSIX".to_string(),
-        Symbol {
-            name: String::from("CFG_RELISH_POSIX"),
-            args: Args::None,
-            conditional_branches: false,
-            docs: "variable holding whether or not POSIX job control functions are to be loaded.
-checked at shell startup by configuration daemon. not used afterwards.
+            "CFG_RELISH_POSIX".to_string(),
+            Symbol {
+                name: String::from("CFG_RELISH_POSIX"),
+                args: Args::None,
+                conditional_branches: false,
+                docs: "variable holding whether or not POSIX job control functions are to be loaded.
+    checked at shell startup by configuration daemon. not used afterwards.
 
-default value: not set".to_string(),
-            value: ValueType::VarForm(Box::new(Ctr::String("0".to_string()))),
-        },
-    );*/
+    default value: not set".to_string(),
+                value: ValueType::VarForm(Box::new(Ctr::String("0".to_string()))),
+            },
+        );*/
 
     syms.insert(
         "CFG_RELISH_ENV".to_string(),
@@ -66,7 +66,8 @@ default value: 1 (set)
             args: Args::None,
             conditional_branches: false,
             docs: "function called to output prompt. this function is called with no arguments.
-default value (<lambda>)".to_string(),
+default value (<lambda>)"
+                .to_string(),
             value: ValueType::Internal(Rc::new(prompt_default_callback)),
         },
     );
diff --git a/src/stl.rs b/src/stl.rs
index 9c011cb..b3587fa 100644
--- a/src/stl.rs
+++ b/src/stl.rs
@@ -89,7 +89,8 @@ example: (let ((step1 'hello')
 In this example step1, step2, and step3 are created sequentially.
 Then, the echo form is evaluated, printing 'hello-world'.
 Finally, the some-func form is evaluated.
-Since the call to some-func is the final form, its value is returned.".to_string(),
+Since the call to some-func is the final form, its value is returned."
+                .to_string(),
             value: ValueType::Internal(Rc::new(control::let_callback)),
         },
     );
@@ -126,7 +127,8 @@ example: (circuit (eq? (do-operation) myresult)
                   false
                   (do-another-operation))
 
-in this example, do-another-operation will not be called".to_string(),
+in this example, do-another-operation will not be called"
+                .to_string(),
             value: ValueType::Internal(Rc::new(control::circuit_callback)),
         },
     );
@@ -139,7 +141,8 @@ in this example, do-another-operation will not be called".to_string(),
             conditional_branches: false,
             docs: "traverses a list of N arguments, all of which are expected to be boolean.
 starts with arg1 AND arg2, and then calculates prev_result AND next_arg.
-returns final result.".to_string(),
+returns final result."
+                .to_string(),
             value: ValueType::Internal(Rc::new(boolean::bool_and_callback)),
         },
     );
@@ -152,7 +155,8 @@ returns final result.".to_string(),
             conditional_branches: false,
             docs: "traverses a list of N arguments, all of which are expected to be boolean.
 starts with arg1 OR arg2, and then calculates prev_result OR next_arg.
-returns final result.".to_string(),
+returns final result."
+                .to_string(),
             value: ValueType::Internal(Rc::new(boolean::bool_or_callback)),
         },
     );
@@ -164,7 +168,8 @@ returns final result.".to_string(),
             args: Args::Strict(vec![Type::Bool]),
             conditional_branches: false,
             docs: "takes a single argument (expects a boolean).
-returns false if arg is true or true if arg is false.".to_string(),
+returns false if arg is true or true if arg is false."
+                .to_string(),
             value: ValueType::Internal(Rc::new(boolean::bool_not_callback)),
         },
     );
@@ -177,7 +182,8 @@ returns false if arg is true or true if arg is false.".to_string(),
             conditional_branches: false,
             docs: "traverses a list of N arguments.
 returns true if all arguments hold the same value.
-NOTE: 1 and 1.0 are the same, but '1' 'one' or one (symbol) aren't".to_string(),
+NOTE: 1 and 1.0 are the same, but '1' 'one' or one (symbol) aren't"
+                .to_string(),
             value: ValueType::Internal(Rc::new(boolean::bool_iseq_callback)),
         },
     );
@@ -190,7 +196,8 @@ NOTE: 1 and 1.0 are the same, but '1' 'one' or one (symbol) aren't".to_string(),
             conditional_branches: true,
             docs: "switches a boolean symbol between true or false.
 Takes a single argument (a symbol). Looks it up in the variable table.
-Either sets the symbol to true if it is currently false, or vice versa.".to_string(),
+Either sets the symbol to true if it is currently false, or vice versa."
+                .to_string(),
             value: ValueType::Internal(Rc::new(boolean::bool_toggle_callback)),
         },
     );
@@ -237,7 +244,8 @@ pub fn dynamic_stdlib(syms: &mut SymTable) -> Result<(), String> {
      (def myfunc 'does a thing' (myarg1 myarg2) (dothing myarg1 myarg2) (add myarg1 myarg2))
   3. symbol un-definition:
      Takes just a name. Removes variable from table.
-     (def useless-var)".to_string(),
+     (def useless-var)"
+                .to_string(),
             value: ValueType::Internal(Rc::new(
                 move |ast: &Seg, syms: &mut SymTable| -> Result<Ctr, String> {
                     _store_callback(ast, syms, env_cfg_user_form)
@@ -261,7 +269,7 @@ fn _echo_callback(ast: &Seg, _syms: &mut SymTable) -> Result<Ctr, String> {
 
 fn _help_callback(ast: &Seg, syms: &mut SymTable) -> Result<Ctr, String> {
     if ast.len() != 1 {
-        return Err("help only takes a single argument".to_string())
+        return Err("help only takes a single argument".to_string());
     }
     if let Ctr::Symbol(ref symbol) = *ast.car {
         if let Some(ref sym) = syms.get(symbol) {
@@ -271,17 +279,20 @@ fn _help_callback(ast: &Seg, syms: &mut SymTable) -> Result<Ctr, String> {
             } else {
                 args_str = sym.args.to_string();
             }
-            println!("NAME: {0}\n
+            println!(
+                "NAME: {0}\n
 ARGS: {1}\n
 DOCUMENTATION:\n
 {2}\n
 CURRENT VALUE AND/OR BODY:
-(TODO)", sym.name, args_str, sym.docs);
+(TODO)",
+                sym.name, args_str, sym.docs
+            );
         } else {
-            return Err("undefined symbol".to_string())
+            return Err("undefined symbol".to_string());
         }
     } else {
-        return Err("help should only be called on a symbol".to_string())
+        return Err("help should only be called on a symbol".to_string());
     }
 
     Ok(Ctr::None)
@@ -293,7 +304,7 @@ fn _store_callback(ast: &Seg, syms: &mut SymTable, env_cfg: bool) -> Result<Ctr,
         match &*ast.cdr {
             // define a symbol
             Ctr::Seg(doc_tree) => {
-                if let Ctr::String(ref doc) =  *doc_tree.car {
+                if let Ctr::String(ref doc) = *doc_tree.car {
                     match &*doc_tree.cdr {
                         // define a variable
                         Ctr::Seg(data_tree) if is_var => match eval(&Box::new(data_tree), syms) {
@@ -336,7 +347,8 @@ fn _store_callback(ast: &Seg, syms: &mut SymTable, env_cfg: bool) -> Result<Ctr,
                                     }
                                 }) {
                                     return Err(
-                                        "all arguments defined for function must be of type symbol".to_string()
+                                        "all arguments defined for function must be of type symbol"
+                                            .to_string(),
                                     );
                                 };
 
@@ -361,17 +373,19 @@ fn _store_callback(ast: &Seg, syms: &mut SymTable, env_cfg: bool) -> Result<Ctr,
                                     );
                                 }
                             } else {
-                                return Err("expected list of arguments in function definition".to_string());
+                                return Err(
+                                    "expected list of arguments in function definition".to_string()
+                                );
                             }
-                        },
+                        }
 
                         // theres a name and a doc string but nothing else
-                        _ => return Err("have name and doc string, but no body.".to_string())
+                        _ => return Err("have name and doc string, but no body.".to_string()),
                     }
                 } else {
-                    return Err("doc string is a required argument".to_string())
+                    return Err("doc string is a required argument".to_string());
                 }
-            },
+            }
 
             // undefine a symbol
             Ctr::None => {
@@ -379,12 +393,12 @@ fn _store_callback(ast: &Seg, syms: &mut SymTable, env_cfg: bool) -> Result<Ctr,
                 if env_cfg {
                     env::remove_var(identifier);
                 }
-            },
+            }
 
             _ => return Err("arguments not in standard form".to_string()),
         }
     } else {
-        return Err("first argument to export must be a symbol".to_string())
+        return Err("first argument to export must be a symbol".to_string());
     }
     Ok(Ctr::None)
 }
diff --git a/src/sym.rs b/src/sym.rs
index 748ec54..034e8b8 100644
--- a/src/sym.rs
+++ b/src/sym.rs
@@ -18,8 +18,8 @@
 use crate::eval::eval;
 use crate::segment::{Ctr, Seg, Type};
 use std::collections::HashMap;
-use std::rc::Rc;
 use std::fmt;
+use std::rc::Rc;
 
 #[derive(Clone)]
 pub struct SymTable(HashMap<String, Symbol>);
diff --git a/tests/test_eval.rs b/tests/test_eval.rs
index 44a4593..0f147cd 100644
--- a/tests/test_eval.rs
+++ b/tests/test_eval.rs
@@ -7,7 +7,7 @@ mod eval_tests {
         let test_doc = "(1 2)".to_string();
         let mut syms = SymTable::new();
         let doc_tree = lex(&test_doc).unwrap();
-        let reduced =  *eval(&doc_tree, &mut syms).unwrap();
+        let reduced = *eval(&doc_tree, &mut syms).unwrap();
         assert_eq!(reduced.to_string(), test_doc);
     }
 
@@ -16,9 +16,8 @@ mod eval_tests {
         let test_doc = "(1 (1 2 3 4 5) 5)".to_string();
         let mut syms = SymTable::new();
         let doc_tree = lex(&test_doc).unwrap();
-        let reduced =  *eval(&doc_tree, &mut syms).unwrap();
+        let reduced = *eval(&doc_tree, &mut syms).unwrap();
         assert_eq!(reduced.to_string(), test_doc);
-
     }
 
     #[test]
@@ -43,7 +42,7 @@ mod eval_tests {
 
         syms.insert(String::from("echo"), test_external_func);
         let doc_tree = lex(&test_doc).unwrap();
-        let reduced =  *eval(&doc_tree, &mut syms).unwrap();
+        let reduced = *eval(&doc_tree, &mut syms).unwrap();
         assert_eq!(reduced.to_string(), output);
     }
 
@@ -69,7 +68,7 @@ mod eval_tests {
 
         syms.insert(String::from("echo"), test_external_func);
         let doc_tree = lex(&test_doc).unwrap();
-        let reduced =  *eval(&doc_tree, &mut syms).unwrap();
+        let reduced = *eval(&doc_tree, &mut syms).unwrap();
         assert_eq!(reduced.to_string(), output);
     }
 
diff --git a/tests/test_func.rs b/tests/test_func.rs
index 43f1545..f0d2e7c 100644
--- a/tests/test_func.rs
+++ b/tests/test_func.rs
@@ -25,7 +25,10 @@ mod func_tests {
         };
         let args = Seg::from(Box::new(Ctr::Bool(true)), Box::new(Ctr::None));
         syms.insert(String::from("test_func_in"), test_internal_func);
-        if let Ctr::Bool(b) = *syms.call_symbol(&"test_func_in".to_string(), &args, true).unwrap() {
+        if let Ctr::Bool(b) = *syms
+            .call_symbol(&"test_func_in".to_string(), &args, true)
+            .unwrap()
+        {
             assert!(b)
         }
     }
@@ -51,7 +54,10 @@ mod func_tests {
         );
 
         syms.insert(String::from("test_func_in"), test_external_func);
-        if let Ctr::Bool(b) = *syms.call_symbol(&"test_func_in".to_string(), &args, true).unwrap() {
+        if let Ctr::Bool(b) = *syms
+            .call_symbol(&"test_func_in".to_string(), &args, true)
+            .unwrap()
+        {
             assert!(b)
         }
     }
@@ -77,10 +83,13 @@ mod func_tests {
         );
 
         syms.insert(String::from("echo_2"), test_external_func);
-        assert_eq!(*syms.call_symbol(&"echo_2".to_string(), &args, true)
-                   .unwrap()
-                   .to_string(),
-                   "'test'".to_string());
+        assert_eq!(
+            *syms
+                .call_symbol(&"echo_2".to_string(), &args, true)
+                .unwrap()
+                .to_string(),
+            "'test'".to_string()
+        );
     }
 
     #[test]
@@ -122,10 +131,12 @@ mod func_tests {
         let args = Seg::from(Box::new(Ctr::Bool(true)), Box::new(Ctr::None));
         syms.insert(String::from("test_inner"), inner_func);
         syms.insert(String::from("test_outer"), outer_func);
-        assert_eq!(syms.call_symbol(&"test_outer".to_string(), &args, true)
-                   .unwrap()
-                   .to_string(),
-                   "'test'".to_string());
+        assert_eq!(
+            syms.call_symbol(&"test_outer".to_string(), &args, true)
+                .unwrap()
+                .to_string(),
+            "'test'".to_string()
+        );
     }
 
     #[test]
@@ -241,8 +252,7 @@ mod func_tests {
             syms.call_symbol(&"test_func_in".to_string(), &args, true)
                 .err()
                 .unwrap(),
-            "error in call to undefined-symbol: undefined symbol: undefined-symbol"
-                .to_string(),
+            "error in call to undefined-symbol: undefined symbol: undefined-symbol".to_string(),
         );
     }
 }
diff --git a/tests/test_lex.rs b/tests/test_lex.rs
index faa1e4a..5b01bae 100644
--- a/tests/test_lex.rs
+++ b/tests/test_lex.rs
@@ -4,86 +4,59 @@ mod lex_tests {
     #[test]
     fn test_lex_basic_pair() {
         let document = String::from("(hello 'world')");
-        assert_eq!(
-            lex(&document).unwrap().to_string(),
-            document
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), document);
     }
 
     #[test]
     fn test_lex_basic_list() {
         let document = String::from("(hello 'world' 1 2 3)");
-        assert_eq!(
-            lex(&document).unwrap().to_string(),
-            document
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), document);
     }
 
     #[test]
     fn test_lex_complex_list() {
         let document = String::from("(hello 'world' (1 2 (1 2 3)) 1 2 3)");
-        assert_eq!(
-            lex(&document).unwrap().to_string(),
-            document
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), document);
     }
 
     #[test]
     fn test_bad_symbol() {
         let document = String::from("(as;dd)");
         let output: &str = "Problem lexing document: \"Unparsable token: as;dd\"";
-         assert_eq!(
-            lex(&document).err().unwrap(),
-            output.to_string(),
-        );
+        assert_eq!(lex(&document).err().unwrap(), output.to_string(),);
     }
 
     #[test]
     fn test_list_delim_in_str() {
         let document = String::from("('(')");
-        assert_eq!(
-            lex(&document).unwrap().to_string(),
-            document
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), document);
     }
 
     #[test]
     fn test_empty_string() {
         let document = String::from("('')");
-        assert_eq!(
-            lex(&document).unwrap().to_string(),
-            document
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), document);
     }
 
     #[test]
     fn test_unmatched_list_delim_flat() {
         let document = String::from("(one two");
         let output: &str = "Problem lexing document: \"Unmatched list delimiter in input\"";
-         assert_eq!(
-            lex(&document).err().unwrap(),
-            output.to_string(),
-        );
+        assert_eq!(lex(&document).err().unwrap(), output.to_string(),);
     }
 
     #[test]
     fn test_unmatched_list_delim_complex() {
         let document = String::from("(one two (three)");
         let output: &str = "Problem lexing document: \"Unmatched list delimiter in input\"";
-         assert_eq!(
-            lex(&document).err().unwrap(),
-            output.to_string(),
-        );
+        assert_eq!(lex(&document).err().unwrap(), output.to_string(),);
     }
 
     #[test]
     fn test_comment() {
         let document = String::from("#!/bin/relish\n(one two)");
         let output: &str = "(one two)";
-         assert_eq!(
-            lex(&document).unwrap().to_string(),
-            output.to_string(),
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
     }
 
     #[test]
@@ -91,30 +64,20 @@ mod lex_tests {
         let document =
             String::from("#!/bin/relish\n((one two)# another doc comment\n(three four))");
         let output: &str = "((one two) (three four))";
-         assert_eq!(
-            lex(&document).unwrap().to_string(),
-            output.to_string(),
-        );
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
     }
 
     #[test]
     fn test_inline_comment() {
         let document = String::from("#!/bin/relish\n((one two)\n# another doc comment\nthree)");
         let output: &str = "((one two) three)";
-           assert_eq!(
-            lex(&document).unwrap().to_string(),
-            output.to_string(),
-        );
-
+        assert_eq!(lex(&document).unwrap().to_string(), output.to_string(),);
     }
 
     #[test]
     fn test_bad_token_list() {
         let document = String::from("(one t(wo)");
         let output: &str = "Problem lexing document: \"list started in middle of another token\"";
-         assert_eq!(
-            lex(&document).err().unwrap(),
-            output.to_string(),
-        );
+        assert_eq!(lex(&document).err().unwrap(), output.to_string(),);
     }
 }
diff --git a/tests/test_lib_append.rs b/tests/test_lib_append.rs
index 0b83366..919ea68 100644
--- a/tests/test_lib_append.rs
+++ b/tests/test_lib_append.rs
@@ -11,7 +11,9 @@ mod append_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -26,7 +28,9 @@ mod append_lib_tests {
         dynamic_stdlib(&mut syms).unwrap();
 
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -41,7 +45,9 @@ mod append_lib_tests {
         dynamic_stdlib(&mut syms).unwrap();
 
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -56,7 +62,9 @@ mod append_lib_tests {
         dynamic_stdlib(&mut syms).unwrap();
 
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -71,7 +79,9 @@ mod append_lib_tests {
         dynamic_stdlib(&mut syms).unwrap();
 
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
diff --git a/tests/test_lib_bools.rs b/tests/test_lib_bools.rs
index 10eb09b..87b9ea8 100644
--- a/tests/test_lib_bools.rs
+++ b/tests/test_lib_bools.rs
@@ -10,7 +10,9 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -23,7 +25,9 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -36,7 +40,9 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -49,10 +55,11 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
-
     }
 
     #[test]
@@ -63,10 +70,11 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
-
     }
 
     #[test]
@@ -77,7 +85,9 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -90,7 +100,9 @@ mod bool_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
diff --git a/tests/test_lib_control.rs b/tests/test_lib_control.rs
index 5e6d563..5e852d2 100644
--- a/tests/test_lib_control.rs
+++ b/tests/test_lib_control.rs
@@ -10,7 +10,9 @@ mod control_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -23,7 +25,9 @@ mod control_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -35,8 +39,10 @@ mod control_lib_tests {
         let mut syms = SymTable::new();
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
-         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+        assert_eq!(
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -52,7 +58,9 @@ mod control_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -65,7 +73,9 @@ mod control_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }
@@ -83,7 +93,9 @@ mod control_lib_tests {
         static_stdlib(&mut syms).unwrap();
         dynamic_stdlib(&mut syms).unwrap();
         assert_eq!(
-            *eval(&lex(&document.to_string()).unwrap(), &mut syms).unwrap().to_string(),
+            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
+                .unwrap()
+                .to_string(),
             result.to_string(),
         );
     }