Parse and format Quantities

Cargo.toml

@@ -17,3 +17,8 @@ tracing = "0.1.40"
 tracing-subscriber = { version = "0.3.18", features = [ "env-filter" ] }
 
 [build-dependencies]
+
+[profile.release]
+debug = "limited"
+strip = true
+lto = true

LICENSE

@@ -1,4 +1,4 @@
-Copyright © 2002-2024 Athae Eredh Siniath and Others
+Copyright © 2002-2025 Athae Eredh Siniath and Others
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),

src/error/display.rs

@@ -25,7 +25,7 @@ impl<'i> TechniqueError<'i> {
             .unwrap_or("?");
 
         let line = i + 1;
-        let column = j;
+        let column = j + 1;
 
         let width = line
             .to_string()
@@ -38,7 +38,7 @@ impl<'i> TechniqueError<'i> {
 
 {:width$} {}
 {:width$} {} {}
-{:width$} {} {:>j$}
+{:width$} {} {:>column$}
 
 {}
             "#,
@@ -68,7 +68,7 @@ impl<'i> TechniqueError<'i> {
         let j = calculate_column_number(self.source, self.offset);
 
         let line = i + 1;
-        let column = j;
+        let column = j + 1;
 
         format!(
             "{}: {}:{}:{} {}",
@@ -103,8 +103,18 @@ fn calculate_line_number(content: &str, offset: usize) -> usize {
 fn calculate_column_number(content: &str, offset: usize) -> usize {
     let before = &content[..offset];
     match before.rfind('\n') {
-        Some(start) => offset - start,
-        None => offset,
+        Some(start) => {
+            // Count Unicode characters from the start of the line to the offset
+            content[start + 1..offset]
+                .chars()
+                .count()
+        }
+        None => {
+            // No newline found, count characters from the beginning
+            before
+                .chars()
+                .count()
+        }
     }
 }
 
@@ -136,6 +146,35 @@ test
             .unwrap();
         assert_eq!(after, "test");
     }
+
+    #[test]
+    fn counting_columns_ascii() {
+        let content = "This is a test";
+
+        let col = calculate_column_number(content, 5);
+        assert_eq!(col, 5); // After "This "
+    }
+
+    #[test]
+    fn counting_columns_unicode() {
+        // Test with Unicode characters like those in Three.t: "3.0 × 10⁸ m_s"
+        let content = "3.0 × 10⁸ m_s";
+
+        // At the underscore (× and ⁸ are multi-byte Unicode chars)
+        let offset = "3.0 × 10⁸ m".len();
+        let col = calculate_column_number(content, offset);
+        assert_eq!(col, 11); // Should count 11 characters, not bytes
+    }
+
+    #[test]
+    fn counting_columns_multiline() {
+        let content = "First line\nSecond × line";
+
+        // After "Second " on second line (× is multi-byte)
+        let offset = "First line\n".len();
+        let col = calculate_column_number(content, offset + 7);
+        assert_eq!(col, 7);
+    }
 }
 
 #[derive(Debug)]

src/formatting/formatter.rs

@@ -822,7 +822,7 @@ impl Formatter {
     fn append_numeric(&mut self, numeric: &Numeric) {
         match numeric {
             Numeric::Integral(num) => self.append(Syntax::Numeric, &num.to_string()),
-            Numeric::Scientific(_) => todo!(),
+            Numeric::Scientific(quantity) => self.append(Syntax::Numeric, &quantity.to_string()),
         }
     }
 

src/language/mod.rs

@@ -1,6 +1,8 @@
 // Types representing the Technique procedures language
 
+mod quantity;
 mod types;
 
 // Re-export all public symbols
+pub use quantity::*;
 pub use types::*;