fix: unit parsing edge cases

lib/measurements/matcher.js

@@ -16,8 +16,10 @@
 const NUM           = '\\d+(?:\\.\\d+)?';
 const FRAC          = '\\d+\\s*/\\s*\\d+';
 const MIXED         = '\\d+\\s+\\d+\\s*/\\s*\\d+';
+const UNICODE_FRAC  = '[\u00BC-\u00BE\u2150-\u215E]';
+const MIXED_UNI     = `\\d+\\s*${UNICODE_FRAC}`;
 const APPROX_PREFIX = '~\\s*';
-const SINGLE_AMOUNT = `(?:${APPROX_PREFIX})?(?:${MIXED}|${FRAC}|${NUM})`;
+const SINGLE_AMOUNT = `(?:${APPROX_PREFIX})?(?:${MIXED}|${FRAC}|${MIXED_UNI}|${UNICODE_FRAC}|${NUM})`;
 const RANGE_SEP     = '\\s*(?:-|to)\\s*';
 const AMOUNT        = `(?:${SINGLE_AMOUNT}${RANGE_SEP}${SINGLE_AMOUNT}|${SINGLE_AMOUNT})`;
 
@@ -39,6 +41,27 @@ const DIM_UNIT       = '(?:inch(?:es)?|in\\.?|cm|mm)';
  * @param {string} str — e.g. "200", "1.5", "1/2", "1 1/2", "~250"
  * @returns {{ value: number, approximate: boolean }}
  */
+const UNICODE_FRAC_MAP = {
+  '\u00BC': 0.25,   // ¼
+  '\u00BD': 0.5,    // ½
+  '\u00BE': 0.75,   // ¾
+  '\u2150': 1/7,    // ⅐
+  '\u2151': 1/9,    // ⅑
+  '\u2152': 1/10,   // ⅒
+  '\u2153': 1/3,    // ⅓
+  '\u2154': 2/3,    // ⅔
+  '\u2155': 0.2,    // ⅕
+  '\u2156': 0.4,    // ⅖
+  '\u2157': 0.6,    // ⅗
+  '\u2158': 0.8,    // ⅘
+  '\u2159': 1/6,    // ⅙
+  '\u215A': 5/6,    // ⅚
+  '\u215B': 0.125,  // ⅛
+  '\u215C': 0.375,  // ⅜
+  '\u215D': 0.625,  // ⅝
+  '\u215E': 0.875,  // ⅞
+};
+
 function parseSingleAmount(str) {
   str = str.trim();
   const approximate = str.startsWith('~');
@@ -46,6 +69,20 @@ function parseSingleAmount(str) {
     str = str.replace(/^~\s*/, '');
   }
 
+  // Unicode mixed number: "1½", "1 ½"
+  const uniMixedMatch = str.match(/^(\d+)\s*([\u00BC-\u00BE\u2150-\u215E])$/);
+  if (uniMixedMatch) {
+    const whole = parseInt(uniMixedMatch[1], 10);
+    const frac = UNICODE_FRAC_MAP[uniMixedMatch[2]] || 0;
+    return { value: whole + frac, approximate };
+  }
+
+  // Standalone Unicode fraction: "½", "¾"
+  const uniFracMatch = str.match(/^([\u00BC-\u00BE\u2150-\u215E])$/);
+  if (uniFracMatch) {
+    return { value: UNICODE_FRAC_MAP[uniFracMatch[1]] || 0, approximate };
+  }
+
   // Mixed number: "1 1/2"
   const mixedMatch = str.match(/^(\d+)\s+(\d+)\s*\/\s*(\d+)$/);
   if (mixedMatch) {
@@ -299,6 +336,33 @@ function findDimensions(text) {
     });
   }
 
+  // Standalone AMOUNT + dimension unit (e.g. "1 inch", "0.5-1cm")
+  const standaloneDimRe = new RegExp(
+    `(${AMOUNT})\\s*(${DIM_UNIT})\\b`,
+    'gi'
+  );
+
+  while ((m = standaloneDimRe.exec(text)) !== null) {
+    // Skip if overlapping with an NxN match already found
+    const alreadyMatched = results.some(
+      r => m.index >= r.index && m.index < r.index + r.match.length
+    );
+    if (alreadyMatched) continue;
+
+    const amount = parseAmount(m[1]);
+    const unit = normalizeUnit(m[2]);
+
+    results.push({
+      match: m[0],
+      index: m.index,
+      type: 'dimension',
+      amount,
+      unit,
+      approximate: typeof amount.approximate === 'boolean' ? amount.approximate : false,
+      alt: null,
+    });
+  }
+
   return results;
 }
 

recipes/Tater Tot Hotdish.md

@@ -38,7 +38,7 @@ makes: 1 9x13 pan or 4 large rectangular pyrex containers
 ## Tools
 - pan
 - mixing bowl 
-- 9 x 13 inch glass baking dish/4  8x6x2 inch pyrex dishes
+- 9 x 13 inch glass baking dish/8x6x2 inch pyrex dishes 4
 ## Steps
 - preheat oven to 350 °F
 - dice onion