From 37bac163e2e5400d65836e5700cfd4da946ee297 Mon Sep 17 00:00:00 2001
From: Frank Henigman <fjhenigman@gmail.com>
Date: Tue, 3 Feb 2026 11:32:58 -0500
Subject: [PATCH] Factor out saving metrics in FontFile.

---
 src/PIL/FontFile.py | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/PIL/FontFile.py b/src/PIL/FontFile.py
index 1e0c1c166b5..6c8a5d0ec85 100644
--- a/src/PIL/FontFile.py
+++ b/src/PIL/FontFile.py
@@ -123,12 +123,15 @@ def save(self, filename: str) -> None:
 
         # font metrics
         with open(os.path.splitext(filename)[0] + ".pil", "wb") as fp:
-            fp.write(b"PILfont\n")
-            fp.write(f";;;;;;{self.ysize};\n".encode("ascii"))  # HACK!!!
-            fp.write(b"DATA\n")
-            for id in range(256):
-                m = self.metrics[id]
-                if not m:
-                    puti16(fp, (0,) * 10)
-                else:
-                    puti16(fp, m[0] + m[1] + m[2])
+            self.save_metrics(fp)
+
+    def save_metrics(self, fp: BinaryIO) -> None:
+        fp.write(b"PILfont\n")
+        fp.write(f";;;;;;{self.ysize};\n".encode("ascii"))  # HACK!!!
+        fp.write(b"DATA\n")
+        for id in range(256):
+            m = self.metrics[id]
+            if not m:
+                puti16(fp, (0,) * 10)
+            else:
+                puti16(fp, m[0] + m[1] + m[2])