--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build.rs	Thu Dec 01 23:37:14 2022 +0200
@@ -0,0 +1,38 @@
+use std::env;
+use regex::{Regex, Captures};
+
+fn proc<A : AsRef<str>>(re : &str, str : A) -> String {
+    let need_to_escape = Regex::new(r"([_*\\])").unwrap();
+    Regex::new(re).unwrap().replace_all(str.as_ref(), |caps : &Captures| {
+        format!("{}{}{}",
+            caps.get(1).unwrap().as_str(),
+            need_to_escape.replace_all(caps.get(2).unwrap().as_str(), "\\$1"),
+            caps.get(3).unwrap().as_str()
+        )
+    }).to_string()
+}
+
+fn main() {
+    let out_dir = env::var("OUT_DIR").unwrap();
+    
+    // Since rust is stuck in 80's 7-bit gringo ASCII world, so that rustdoc does not support
+    // markdown KaTeX mathematics, we have to process the README to include horrible horrible
+    // horrible escapes for the math, and then use an vomit-inducingly ugly javasccript
+    // workaround to process the math on the fly.
+
+    println!("cargo:rerun-if-changed=README.md");
+
+    let readme = std::fs::read_to_string("README.md")
+        .expect("Error reading README");
+
+    // Escape _, *, and \ in equations.
+    let readme_uglified = proc(r"(?m)([^$]\$)([^$]+)(\$[^$])",
+                               proc(r"([^$]\$\$)([^$]+)(\$\$[^$])", readme));
+    // Remove the instructions for building the documentation
+    let readme_cut = Regex::new("## Internals(.*|\n)*")
+        .unwrap()
+        .replace_all(&readme_uglified, "");
+
+    std::fs::write(out_dir + "/README_uglified.md", readme_cut.as_bytes())
+        .expect("Error saving uglified README");
+}