diff --git a/src/packages/array_basic.rs b/src/packages/array_basic.rs
index c044eddc..fc44c4c5 100644
--- a/src/packages/array_basic.rs
+++ b/src/packages/array_basic.rs
@@ -3,8 +3,6 @@
 
 use crate::any::{Dynamic, Variant};
 use crate::def_package;
-#[cfg(not(feature = "no_object"))]
-use crate::engine::make_getter;
 use crate::engine::{Array, Engine};
 use crate::fn_native::FnPtr;
 use crate::parser::{ImmutableString, INT};
@@ -13,6 +11,9 @@ use crate::plugin::*;
 #[cfg(not(feature = "unchecked"))]
 use crate::{result::EvalAltResult, token::Position};
 
+#[cfg(not(feature = "no_object"))]
+use crate::engine::make_getter;
+
 use crate::stdlib::{any::TypeId, boxed::Box};
 
 #[cfg(not(feature = "unchecked"))]
diff --git a/src/packages/fn_basic.rs b/src/packages/fn_basic.rs
index fd3b5052..e34cb918 100644
--- a/src/packages/fn_basic.rs
+++ b/src/packages/fn_basic.rs
@@ -1,9 +1,10 @@
 use crate::def_package;
-#[cfg(not(feature = "no_object"))]
-use crate::engine::make_getter;
 use crate::fn_native::FnPtr;
 use crate::plugin::*;
 
+#[cfg(not(feature = "no_object"))]
+use crate::engine::make_getter;
+
 #[export_fn]
 fn get_fn_name(f: &mut FnPtr) -> ImmutableString {
     f.get_fn_name().clone()
diff --git a/src/packages/math_basic.rs b/src/packages/math_basic.rs
index f8b905b2..aad542b1 100644
--- a/src/packages/math_basic.rs
+++ b/src/packages/math_basic.rs
@@ -1,6 +1,4 @@
 use crate::def_package;
-#[cfg(not(feature = "no_object"))]
-use crate::engine::make_getter;
 use crate::parser::INT;
 use crate::plugin::*;
 
@@ -10,6 +8,9 @@ use crate::parser::FLOAT;
 #[cfg(not(feature = "no_float"))]
 use crate::{result::EvalAltResult, token::Position};
 
+#[cfg(not(feature = "no_object"))]
+use crate::engine::make_getter;
+
 #[cfg(feature = "no_std")]
 #[cfg(not(feature = "no_float"))]
 use num_traits::float::Float;
diff --git a/src/packages/string_basic.rs b/src/packages/string_basic.rs
index 08778150..712faed1 100644
--- a/src/packages/string_basic.rs
+++ b/src/packages/string_basic.rs
@@ -1,8 +1,10 @@
+#![allow(non_snake_case)]
+
 use crate::def_package;
 use crate::engine::{FN_TO_STRING, KEYWORD_DEBUG, KEYWORD_PRINT};
 use crate::fn_native::FnPtr;
-use crate::module::FuncReturn;
 use crate::parser::{ImmutableString, INT};
+use crate::plugin::*;
 
 #[cfg(not(feature = "no_index"))]
 use crate::engine::Array;
@@ -16,76 +18,136 @@ use crate::stdlib::{
     string::ToString,
 };
 
-// Register print and debug
-fn to_debug<T: Debug>(x: &mut T) -> FuncReturn<ImmutableString> {
-    Ok(format!("{:?}", x).into())
-}
-fn to_string<T: Display>(x: &mut T) -> FuncReturn<ImmutableString> {
-    Ok(x.to_string().into())
-}
-#[cfg(not(feature = "no_object"))]
-fn format_map(x: &mut Map) -> FuncReturn<ImmutableString> {
-    Ok(format!("#{:?}", x).into())
+type Unit = ();
+
+macro_rules! gen_functions {
+    ($root:ident => $fn_name:ident ( $($arg_type:ident),+ )) => {
+        pub mod $root { $(
+            pub mod $arg_type {
+                use super::super::*;
+
+                #[export_fn]
+                pub fn to_string_func(x: &mut $arg_type) -> ImmutableString {
+                    super::super::$fn_name(x)
+                }
+            }
+        )* }
+    }
 }
 
-macro_rules! reg_op {
-    ($lib:expr, $op:expr, $func:ident, $($par:ty),*) => {
-        $( $lib.set_fn_1_mut($op, $func::<$par>); )*
-    };
+macro_rules! reg_print_functions {
+    ($mod_name:ident += $root:ident ; $($arg_type:ident),+) => {
+        $(set_exported_fn!($mod_name, FN_TO_STRING, $root::$arg_type::to_string_func);)*
+        $(set_exported_fn!($mod_name, KEYWORD_PRINT, $root::$arg_type::to_string_func);)*
+    }
+}
+
+macro_rules! reg_debug_functions {
+    ($mod_name:ident += $root:ident ; $($arg_type:ident),+) => {
+        $(set_exported_fn!($mod_name, KEYWORD_DEBUG, $root::$arg_type::to_string_func);)*
+    }
 }
 
 def_package!(crate:BasicStringPackage:"Basic string utilities, including printing.", lib, {
-    reg_op!(lib, KEYWORD_PRINT, to_string, INT, bool, char, FnPtr);
-    reg_op!(lib, FN_TO_STRING, to_string, INT, bool, char, FnPtr);
-    lib.set_fn_1_mut(KEYWORD_DEBUG, |f: &mut FnPtr| Ok(f.to_string()));
+    reg_print_functions!(lib += print_basic; INT, bool, char, FnPtr);
+    set_exported_fn!(lib, KEYWORD_PRINT, print_empty_string);
+    set_exported_fn!(lib, KEYWORD_PRINT, print_unit);
+    set_exported_fn!(lib, FN_TO_STRING, print_unit);
+    set_exported_fn!(lib, KEYWORD_PRINT, print_string);
+    set_exported_fn!(lib, FN_TO_STRING, print_string);
 
-    lib.set_fn_0(KEYWORD_PRINT, || Ok("".to_string()));
-    lib.set_fn_1(KEYWORD_PRINT, |_: ()| Ok("".to_string()));
-    lib.set_fn_1(FN_TO_STRING, |_: ()| Ok("".to_string()));
+    reg_debug_functions!(lib += debug_basic; INT, bool, Unit, char, ImmutableString);
+    set_exported_fn!(lib, KEYWORD_DEBUG, print_empty_string);
+    set_exported_fn!(lib, KEYWORD_DEBUG, debug_fn_ptr);
 
-    lib.set_fn_1(KEYWORD_PRINT, |s: ImmutableString| Ok(s));
-    lib.set_fn_1(FN_TO_STRING, |s: ImmutableString| Ok(s));
+    #[cfg(not(feature = "only_i32"))]
+    #[cfg(not(feature = "only_i64"))]
+    {
+        reg_print_functions!(lib += print_numbers; i8, u8, i16, u16, i32, u32, i64, u64);
+        reg_debug_functions!(lib += debug_numbers; i8, u8, i16, u16, i32, u32, i64, u64);
 
-    reg_op!(lib, KEYWORD_DEBUG, to_debug, INT, bool, (), char, ImmutableString);
-
-    if cfg!(not(feature = "only_i32")) && cfg!(not(feature = "only_i64")) {
-        reg_op!(lib, KEYWORD_PRINT, to_string, i8, u8, i16, u16, i32, u32);
-        reg_op!(lib, FN_TO_STRING, to_string, i8, u8, i16, u16, i32, u32);
-        reg_op!(lib, KEYWORD_DEBUG, to_debug, i8, u8, i16, u16, i32, u32);
-        reg_op!(lib, KEYWORD_PRINT, to_string, i64, u64);
-        reg_op!(lib, FN_TO_STRING, to_string, i64, u64);
-        reg_op!(lib, KEYWORD_DEBUG, to_debug, i64, u64);
-
-        if cfg!(not(target_arch = "wasm32")) {
-            reg_op!(lib, KEYWORD_PRINT, to_string, i128, u128);
-            reg_op!(lib, FN_TO_STRING, to_string, i128, u128);
-            reg_op!(lib, KEYWORD_DEBUG, to_debug, i128, u128);
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            reg_print_functions!(lib += print_num_128; i128, u128);
+            reg_debug_functions!(lib += debug_num_128; i128, u128);
         }
     }
 
     #[cfg(not(feature = "no_float"))]
     {
-        reg_op!(lib, KEYWORD_PRINT, to_string, f32, f64);
-        reg_op!(lib, FN_TO_STRING, to_string, f32, f64);
-        reg_op!(lib, KEYWORD_DEBUG, to_debug, f32, f64);
+        reg_print_functions!(lib += print_float; f32, f64);
+        reg_debug_functions!(lib += debug_float; f32, f64);
     }
 
     #[cfg(not(feature = "no_index"))]
     {
-        reg_op!(lib, KEYWORD_PRINT, to_debug, Array);
-        reg_op!(lib, FN_TO_STRING, to_debug, Array);
-        reg_op!(lib, KEYWORD_DEBUG, to_debug, Array);
+        reg_print_functions!(lib += print_array; Array);
+        reg_debug_functions!(lib += print_array; Array);
     }
 
     #[cfg(not(feature = "no_object"))]
     {
-        lib.set_fn_1_mut(KEYWORD_PRINT, format_map);
-        lib.set_fn_1_mut(FN_TO_STRING, format_map);
-        lib.set_fn_1_mut(KEYWORD_DEBUG, format_map);
+        set_exported_fn!(lib, KEYWORD_PRINT, format_map);
+        set_exported_fn!(lib, FN_TO_STRING, format_map);
+        set_exported_fn!(lib, KEYWORD_DEBUG, format_map);
     }
-
-    lib.set_fn_2("+", |s: ImmutableString, ch: char| Ok(s + ch));
-    lib.set_fn_2_mut("+=", |s: &mut ImmutableString, ch: char| { *s += ch; Ok(()) });
-    lib.set_fn_2_mut("append", |s: &mut ImmutableString, ch: char| { *s += ch; Ok(()) });
-    lib.set_fn_2_mut("append", |s: &mut ImmutableString, s2: ImmutableString| { *s += &s2; Ok(()) });
 });
+
+gen_functions!(print_basic => to_string(INT, bool, char, FnPtr));
+gen_functions!(debug_basic => to_debug(INT, bool, Unit, char, ImmutableString));
+
+#[cfg(not(feature = "only_i32"))]
+#[cfg(not(feature = "only_i64"))]
+gen_functions!(print_numbers => to_string(i8, u8, i16, u16, i32, u32, i64, u64));
+
+#[cfg(not(feature = "only_i32"))]
+#[cfg(not(feature = "only_i64"))]
+gen_functions!(debug_numbers => to_debug(i8, u8, i16, u16, i32, u32, i64, u64));
+
+#[cfg(not(feature = "only_i32"))]
+#[cfg(not(feature = "only_i64"))]
+#[cfg(not(target_arch = "wasm32"))]
+gen_functions!(print_num_128 => to_string(i128, u128));
+
+#[cfg(not(feature = "only_i32"))]
+#[cfg(not(feature = "only_i64"))]
+#[cfg(not(target_arch = "wasm32"))]
+gen_functions!(debug_num_128 => to_debug(i128, u128));
+
+#[cfg(not(feature = "no_float"))]
+gen_functions!(print_float => to_string(f32, f64));
+
+#[cfg(not(feature = "no_float"))]
+gen_functions!(debug_float => to_debug(f32, f64));
+
+#[cfg(not(feature = "no_index"))]
+gen_functions!(print_array => to_debug(Array));
+
+// Register print and debug
+#[export_fn]
+fn print_empty_string() -> ImmutableString {
+    "".to_string().into()
+}
+#[export_fn]
+fn print_unit(_x: ()) -> ImmutableString {
+    "".to_string().into()
+}
+#[export_fn]
+fn print_string(s: ImmutableString) -> ImmutableString {
+    s
+}
+#[export_fn]
+fn debug_fn_ptr(f: &mut FnPtr) -> ImmutableString {
+    f.to_string().into()
+}
+fn to_string<T: Display>(x: &mut T) -> ImmutableString {
+    x.to_string().into()
+}
+fn to_debug<T: Debug>(x: &mut T) -> ImmutableString {
+    format!("{:?}", x).into()
+}
+#[cfg(not(feature = "no_object"))]
+#[export_fn]
+fn format_map(x: &mut Map) -> ImmutableString {
+    format!("#{:?}", x).into()
+}
diff --git a/src/packages/string_more.rs b/src/packages/string_more.rs
index d3b913fa..ded48378 100644
--- a/src/packages/string_more.rs
+++ b/src/packages/string_more.rs
@@ -2,8 +2,6 @@
 
 use crate::any::Dynamic;
 use crate::def_package;
-#[cfg(not(feature = "no_object"))]
-use crate::engine::make_getter;
 use crate::engine::Engine;
 use crate::fn_native::FnPtr;
 use crate::parser::{ImmutableString, INT};
@@ -13,6 +11,9 @@ use crate::utils::StaticVec;
 #[cfg(not(feature = "unchecked"))]
 use crate::{result::EvalAltResult, token::Position};
 
+#[cfg(not(feature = "no_object"))]
+use crate::engine::make_getter;
+
 use crate::stdlib::{
     any::TypeId, boxed::Box, fmt::Display, format, mem, string::String, string::ToString, vec::Vec,
 };
@@ -73,6 +74,7 @@ def_package!(crate:MoreStringPackage:"Additional string utilities, including str
     set_exported_fn!(lib, "index_of", string_funcs::index_of_string);
     set_exported_fn!(lib, "index_of", string_funcs::index_of_string_starting_from);
     set_exported_fn!(lib, "append", string_funcs::append_char);
+    set_exported_fn!(lib, "+=", string_funcs::append_char);
     set_exported_fn!(lib, "append", string_funcs::append_string);
     set_exported_fn!(lib, "sub_string", string_funcs::sub_string);
     set_exported_fn!(lib, "sub_string", string_funcs::sub_string_starting_from);
@@ -193,8 +195,8 @@ mod string_functions {
 mod string_funcs_array {
     use crate::engine::Array;
     use crate::plugin::*;
-    use crate::utils::ImmutableString;
     use crate::stdlib::string::String;
+    use crate::utils::ImmutableString;
 
     #[export_fn]
     pub fn append_array(x: &mut ImmutableString, y: Array) -> String {
@@ -209,8 +211,8 @@ mod string_funcs_array {
 mod string_funcs {
     use crate::parser::INT;
     use crate::plugin::*;
-    use crate::utils::{ImmutableString, StaticVec};
     use crate::stdlib::string::{String, ToString};
+    use crate::utils::{ImmutableString, StaticVec};
 
     #[export_fn]
     pub fn append_unit(s: ImmutableString, _x: ()) -> ImmutableString {
@@ -280,11 +282,11 @@ mod string_funcs {
     }
     #[export_fn]
     pub fn append_char(s: &mut ImmutableString, ch: char) {
-        s.make_mut().push(ch);
+        *s += ch;
     }
     #[export_fn]
     pub fn append_string(s: &mut ImmutableString, add: ImmutableString) {
-        s.make_mut().push_str(add.as_str());
+        *s += &add;
     }
     #[export_fn]
     pub fn sub_string(s: ImmutableString, start: INT, len: INT) -> ImmutableString {
diff --git a/src/packages/time_basic.rs b/src/packages/time_basic.rs
index 0b3cad13..55315cee 100644
--- a/src/packages/time_basic.rs
+++ b/src/packages/time_basic.rs
@@ -5,8 +5,6 @@
 use super::math_basic::MAX_INT;
 
 use crate::def_package;
-#[cfg(not(feature = "no_object"))]
-use crate::engine::make_getter;
 use crate::plugin::*;
 use crate::result::EvalAltResult;
 
@@ -20,6 +18,9 @@ use crate::parser::INT;
 #[cfg(not(feature = "unchecked"))]
 use crate::token::Position;
 
+#[cfg(not(feature = "no_object"))]
+use crate::engine::make_getter;
+
 #[cfg(not(target_arch = "wasm32"))]
 use crate::stdlib::time::Instant;