From 7d7c55c4c73ea5ae2543cd77da173d4ea42002cf Mon Sep 17 00:00:00 2001
From: ylemkimon <mail@ylem.kim>
Date: Sun, 7 Apr 2019 07:24:32 +0900
Subject: [PATCH] Approximate font metrics only when metrics don't exist
 (#1898)

Fix non-existent metrics error for \eth
---
 src/fontMetrics.js | 7 ++++---
 test/katex-spec.js | 3 +--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/fontMetrics.js b/src/fontMetrics.js
index 8fe3324e..868a5263 100644
--- a/src/fontMetrics.js
+++ b/src/fontMetrics.js
@@ -211,10 +211,11 @@ export function getCharacterMetrics(
         throw new Error(`Font metrics not found for font: ${font}.`);
     }
     let ch = character.charCodeAt(0);
-    if (character[0] in extraCharacterMap) {
-        ch = extraCharacterMap[character[0]].charCodeAt(0);
-    }
     let metrics = metricMap[font][ch];
+    if (!metrics && character[0] in extraCharacterMap) {
+        ch = extraCharacterMap[character[0]].charCodeAt(0);
+        metrics = metricMap[font][ch];
+    }
 
     if (!metrics && mode === 'text') {
         // We don't typically have font metrics for Asian scripts.
diff --git a/test/katex-spec.js b/test/katex-spec.js
index 72598be0..49ab0591 100644
--- a/test/katex-spec.js
+++ b/test/katex-spec.js
@@ -3332,8 +3332,7 @@ describe("Unicode", function() {
     });
 
     it("should parse symbols", function() {
-        expect("ð").toParse();  // warns about lacking character metrics
-        expect("£¥ℂℍℑℎℓℕ℘ℙℚℜℝℤℲℵℶℷℸ⅁∀∁∂∃∇∞∠∡∢♠♡♢♣♭♮♯✓°¬‼⋮\u00B7\u00A9").toBuild(strictSettings);
+        expect("£¥ℂℍℑℎℓℕ℘ℙℚℜℝℤℲℵðℶℷℸ⅁∀∁∂∃∇∞∠∡∢♠♡♢♣♭♮♯✓°¬‼⋮\u00B7\u00A9").toBuild(strictSettings);
         expect("\\text{£¥ℂℍℎ\u00A9\u00AE\uFE0F}").toBuild(strictSettings);
     });