From 0c8ce2dccf6f779dae01a6a66cf7a29b50796481 Mon Sep 17 00:00:00 2001
From: Juan Carlos <juancarlospaco@gmail.com>
Date: Sun, 27 Dec 2020 08:02:10 -0300
Subject: [PATCH] Save some alloc on base64 using encodeSize (#16465)

---
 lib/pure/base64.nim | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/pure/base64.nim b/lib/pure/base64.nim
index 40c9af905..2abdc805d 100644
--- a/lib/pure/base64.nim
+++ b/lib/pure/base64.nim
@@ -193,6 +193,7 @@ proc encodeMime*(s: string, lineLen = 75, newLine = "\r\n"): string =
   ## * `decode proc<#decode,string>`_ for decoding a string
   runnableExamples:
     assert encodeMime("Hello World", 4, "\n") == "SGVs\nbG8g\nV29y\nbGQ="
+  result = newStringOfCap(encodeSize(s.len))
   for i, c in encode(s):
     if i != 0 and (i mod lineLen == 0):
       result.add(newLine)