diff --git a/Cargo.lock b/Cargo.lock
index cbe05d0..38ed37d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -22,7 +22,7 @@ checksum = "b03f7fbd470aa8b3ad163c85cce8bccfc11cc9c44ef12da0a4eddd98bd307352"
 
 [[package]]
 name = "spl"
-version = "0.1.8"
+version = "0.2.1"
 dependencies = [
  "multicall",
  "once_cell",
diff --git a/Cargo.toml b/Cargo.toml
index 932c5c7..2ac41d7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "spl"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2021"
 description = "Stack Pogramming Language: A simple, concise scripting language."
 license = "MIT"
diff --git a/iter.spl b/iter.spl
index be56ef5..341c3ea 100644
--- a/iter.spl
+++ b/iter.spl
@@ -210,6 +210,7 @@ construct EnumerationIter {
     ;
     construct { this | with origin this ;
         origin this:=origin
+        0 this:=idx
         this
     }
     next { [mega,any]|null | with this ;
diff --git a/src/lexer.rs b/src/lexer.rs
index e2501ff..d4cb88a 100644
--- a/src/lexer.rs
+++ b/src/lexer.rs
@@ -181,7 +181,6 @@ fn read_block(str_words: &[String], isfn: bool) -> Result<(Option<u32>, Words, u
                 }
                 let blk = read_block(&str_words[i + 1..], false)?;
                 i += 2 + blk.2;
-                println!("{} {}", str_words[i], str_words[i+1]);
                 let ctch = read_block(&str_words[i + 1..], false)?;
                 i += 1 + ctch.2;
                 words.push(Word::Key(Keyword::Catch(types, blk.1, ctch.1)))
diff --git a/src/std_fns.rs b/src/std_fns.rs
index 2a88a89..a243769 100644
--- a/src/std_fns.rs
+++ b/src/std_fns.rs
@@ -447,7 +447,7 @@ pub fn to_str(stack: &mut Stack) -> OError {
                             ))
                         }),
                         _ => stack.err(ErrorKind::InvalidType(
-                            "int".to_owned(),
+                            "?".to_owned(),
                             "__str-element".to_owned(),
                         )),
                     })
diff --git a/std.spl b/std.spl
index 3301255..0ab3f48 100644
--- a/std.spl
+++ b/std.spl
@@ -56,6 +56,29 @@ construct _str_ext {
             ] _str
         } ]
     }
+    replace { str | with replacee replacement this ;
+        def bytes replacee:to-bytes =bytes
+        def iter this:to-bytes:iter =iter
+        def item 0 =item
+        [ while { item null eq not } {
+            def match 0 =match
+            while { match bytes:len eq not } {
+                iter:next =item
+                item null eq if {
+                    3 stop
+                }
+                item dup (match bytes:get) eq dup if {
+                    match ++ =match
+                } not if {
+                    0 =match
+                }
+            }
+            { | pop pop } match:foreach
+            match bytes:len eq if {
+                replacement _array :to-stack
+            }
+        } ] _str
+    }
 } include _str_ext in str
 
 construct _mega-ext {