Remove ExpansionFactor equals to 0 from the private dict of CFF fonts

mozilla · Jan 7, 2023 · 96490fb · 96490fb
1 parent 38e46e7
commit 96490fb
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Showing 4 changed files with 14 additions and 0 deletions.
diff --git a/src/core/cff_parser.js b/src/core/cff_parser.js
@@ -792,6 +792,12 @@ class CFFParser {
     );
     parentDict.privateDict = privateDict;
 
+    if (privateDict.getByName("ExpansionFactor") === 0) {
+      // Firefox doesn't render correctly such a font on Windows (see issue
+      // 15289), hence we just remove the entry.
+      privateDict.removeByName("ExpansionFactor");
+    }
+
     // Parse the Subrs index also since it's relative to the private dict.
     if (!privateDict.getByName("Subrs")) {
       return;

diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
@@ -564,3 +564,4 @@
 !issue15815.pdf
 !issue15818.pdf
 !autoprint.pdf
+!issue15289.pdf
diff --git a/test/pdfs/issue15289.pdf b/test/pdfs/issue15289.pdf
diff --git a/test/test_manifest.json b/test/test_manifest.json
@@ -7292,5 +7292,12 @@
       "rounds": 1,
       "link": true,
       "type": "eq"
+   },
+   {
+      "id": "issue15289",
+      "file": "pdfs/issue15289.pdf",
+      "md5": "f3d20aee398e052ac3dce7cc030f50de",
+      "rounds": 1,
+      "type": "eq"
    }
 ]