Shows the changes in compiled code from scalac between versions

scalacDiff

#!/bin/bash
if [ $# -lt 3 ]; then
  echo "Shows the changes in compiled code from scalac between versions"
  echo "Usage: $BASH_SOURCE v1 v2 classname"
  echo " Where v1 and v2 are legal Scala compiler versions, such as 2.8.0, 2.9.0 and 2.10"
  echo " ... and classname is fully qualified, such as com/blah/MyClass"
  exit -1
fi

function input {
  javap -classpath target/scala-$1/classes $2 | grep public | sort
}

diff -bBsw -C 0 <(input $1 $3) <(input $2 $3) | tail -n +3

Cool! You don't need those temp files though, there's a nice little bash trick:

diff -bBsw -C 0 <(javap -classpath target/scala-$1/classes $3|grep public|sort) <(javap -classpath target/scala-$2/classes $3|grep public|sort)

larsrh, I took your suggestion, factored out a function and also chopped the first 3 lines of output because they no longer provide useful information.