Allow brew log on deleted formulae.

Closes Homebrew/homebrew#19995.

1 files changed, 7 insertions, 2 deletions

diff --git a/Library/Homebrew/cmd/log.rb b/Library/Homebrew/cmd/log.rb
index 0fc65113e..5f0ef63c8 100644
--- a/Library/Homebrew/cmd/log.rb
+++ b/Library/Homebrew/cmd/log.rb
@@ -4,9 +4,14 @@ module Homebrew extend self
       cd HOMEBREW_REPOSITORY
       exec "git", "log", *ARGV.options_only
     else
-      path = ARGV.formulae.first.path.realpath
+      begin
+        path = ARGV.formulae.first.path.realpath
+      rescue FormulaUnavailableError
+        # Maybe the formula was deleted
+        path = HOMEBREW_REPOSITORY/"Library/Formula/#{ARGV.named.first}.rb"
+      end
       cd path.dirname # supports taps
-      exec "git", "log", *ARGV.options_only + [path]
+      exec "git", "log", *ARGV.options_only + ["--", path]
     end
   end
 end