clojure: optionally use rlwrap

Closes #18010.

1 files changed, 19 insertions, 18 deletions

diff --git a/Library/Formula/clojure.rb b/Library/Formula/clojure.rb
index 01f449c69..7b665849f 100644
--- a/Library/Formula/clojure.rb
+++ b/Library/Formula/clojure.rb
@@ -7,19 +7,27 @@ class Clojure < Formula
 
   head 'https://github.com/clojure/clojure.git'
 
-  def script; <<-EOS.undent
-    #!/bin/sh
-    # Clojure wrapper script.
-    # With no arguments runs Clojure's REPL.
+  depends_on 'rlwrap' => :optional
 
-    # Put the Clojure jar from the cellar and the current folder in the classpath.
-    CLOJURE=$CLASSPATH:#{prefix}/#{jar}:${PWD}
-
-    if [ "$#" -eq 0 ]; then
-        java -cp "$CLOJURE" clojure.main --repl
+  def script
+    if build.with? 'rlwrap'
+      rlwrap = "rlwrap "
     else
-        java -cp "$CLOJURE" clojure.main "$@"
-    fi
+      rlwrap = ""
+    end
+    <<-EOS.undent
+      #!/bin/sh
+      # Clojure wrapper script.
+      # With no arguments runs Clojure's REPL.
+
+      # Put the Clojure jar from the cellar and the current folder in the classpath.
+      CLOJURE=$CLASSPATH:#{prefix}/#{jar}:${PWD}
+
+      if [ "$#" -eq 0 ]; then
+          #{rlwrap}java -cp "$CLOJURE" clojure.main --repl
+      else
+          java -cp "$CLOJURE" clojure.main "$@"
+      fi
     EOS
   end
 
@@ -35,13 +43,6 @@ class Clojure < Formula
     (bin+'clj').write script
   end
 
-  def caveats; <<-EOS.undent
-    If you `brew install repl` then you may find this wrapper script from
-    MacPorts useful:
-      http://trac.macports.org/browser/trunk/dports/lang/clojure/files/clj-rlwrap.sh?format=txt
-    EOS
-  end
-
   def test
     system "#{bin}/clj", "-e", '(println "Hello World")'
   end