bzr-extmerge 1.0.0 (new formula)

Closes Homebrew/homebrew#49336

Formula/bzr-extmerge.rb

@@ -0,0 +1,18 @@
+class BzrExtmerge < Formula
+  desc "External merge tool support for Bazaar"
+  homepage "https://launchpad.net/bzr-extmerge"
+  url "https://launchpad.net/bzr-extmerge/trunk/1.0.0/+download/bzr-extmerge-1.0.0.tar.gz"
+  sha256 "1b86d3a54fe669db19bc2a42a09eae52e449cc3ece8234377fd213e834f69cc0"
+
+  bottle :unneeded
+
+  depends_on "bazaar"
+
+  def install
+    (share/"bazaar/plugins/extmerge").install Dir["*"]
+  end
+
+  test do
+    assert_match /Calls an external merge program/, shell_output("bzr help extmerge")
+  end
+end