diff --git a/lib/Render/Head.rakumod b/lib/Render/Head.rakumod
index c93c3ff..22fa4ee 100644
--- a/lib/Render/Head.rakumod
+++ b/lib/Render/Head.rakumod
@@ -47,7 +47,6 @@ sub site-header(BlogMeta:D $meta) is export {
     sub header-link($name, $path, $icon) {
         a :href("$path"), [
             icon $icon;
-            ' ';
             span $name;
         ]
     }
diff --git a/lib/Render/Util.rakumod b/lib/Render/Util.rakumod
index 79ece58..0d7adcb 100644
--- a/lib/Render/Util.rakumod
+++ b/lib/Render/Util.rakumod
@@ -10,7 +10,8 @@ sub show-html($html) is export {
    # Work around HTML::Functional automatically putting newlines between tags
    $out ~~ s:g/'</i>' \v+ '<span>'/<\/i><span>/;
    $out ~~ s:g/\v+ '</a>'/<\/a>/;
-   $out ~~ s:g/',' \v+ '<span'/,<span/;
+   $out ~~ s:g/\s+ ',' \s+ '<span'/, <span/;
+   # TODO: Deal with the nbsps in the header
    $out
 }
 
diff --git a/projects/Idris/src/LessMacrosMoreTypes/Printf.md b/projects/Idris/src/LessMacrosMoreTypes/Printf.md
index ae9b2e8..96da238 100644
--- a/projects/Idris/src/LessMacrosMoreTypes/Printf.md
+++ b/projects/Idris/src/LessMacrosMoreTypes/Printf.md
@@ -11,18 +11,19 @@ unsafe variadics, and dynamic languages, like python, can do the same while
 being memory safe by not being type safe, many type safe languages, such as
 Rust, are forced to provide such functionality through the use of a macro.
 Dependently typed languages, like Idris, can provide a printf like formatting
-interface, while maintaining both memory and type saftey, without the need for
+interface, while maintaining both memory and type safety, without the need for
 the macro. We will explore this by implementing a simplified version of `printf`
 in Idris from scratch.
 
-This article is inspired by an exercise from chapter 6 of [Type Driven
-Development with
-Idris](https://www.manning.com/books/type-driven-development-with-idris), and is
-written as a literate Idris file.
+This article is inspired by an exercise from chapter 6 of
+[Type Driven Development with Idris](https://www.manning.com/books/type-driven-development-with-idris),
+and is written as a literate Idris file, with the source available
+[here](https://git.stranger.systems/thatonelutenist/website/src/branch/trunk/projects/Idris/src/LessMacrosMoreTypes/Printf.md).
 
 ## Gameplan
 
-Our goal is to provide a printf function that can be called, much like it's C equivlant, like so:
+Our goal is to provide a printf function that can be called, much like it's C
+equivalent:
 
 > [!NOTE]
 > As this is a literate Idris document, and we haven't defined our `printf`
@@ -33,13 +34,32 @@ Our goal is to provide a printf function that can be called, much like it's C eq
 ```idris
 failing
   example_usage : String
-  example_usage = printf "%s %d %02d" "hello" 1 2
+  example_usage = printf "%s %d %2d" "hello" 1 2
 ```
 
-
-
 ## Parsing a Format String
 
+First, we need a data structure to describe our format string. We define the
+`Format` data type, with constructors for each of the format specifiers we will
+be supporting, as well as a constructor to hold literal components.
+
+```idris
+data Format : Type where
+  ||| A slot that should be filled in with a number
+  Number : (next : Format) -> Format
+  ||| A slot that should be filled in with a number, padded to a certian number
+  ||| of digits
+  PaddedNumber : (digits : Nat) -> Format
+  ||| A slot that should be filled in with a string
+  Str : (next : Format) -> Format
+  ||| A literal component of the format string that should not be interpolated
+  Literal : (literal : String) -> (next : Format) -> Format
+  ||| The end of the format string
+  End : Format
+```
+
 ## Calculating a Type From a Format String
 
 ## printf
+
+## Working with run-time format strings