Let `curl_download` handle HTTP 416 error.

1 files changed, 4 insertions, 1 deletions

diff --git a/Library/Homebrew/utils/curl.rb b/Library/Homebrew/utils/curl.rb
index bc7055c0c..7807d2034 100644
--- a/Library/Homebrew/utils/curl.rb
+++ b/Library/Homebrew/utils/curl.rb
@@ -38,11 +38,14 @@ def curl(*args)
 end
 
 def curl_download(*args, to: nil, continue_at: "-", **options)
+  had_incomplete_download ||= File.exist?(to)
   curl("--location", "--remote-time", "--continue-at", continue_at.to_s, "--output", to, *args, **options)
 rescue ErrorDuringExecution
   # `curl` error 33: HTTP server doesn't seem to support byte ranges. Cannot resume.
-  if $CHILD_STATUS.exitstatus == 33 && continue_at == "-"
+  # HTTP status 416: Requested range not satisfiable
+  if ($CHILD_STATUS.exitstatus == 33 || had_incomplete_download) && continue_at == "-"
     continue_at = 0
+    had_incomplete_download = false
     retry
   end