Git Diff to Svn Diff - compatible with Crucible andCode Review software

git-svn-diff.sh

#!/bin/bash
#
# git-svn-diff originally by (http://mojodna.net/2009/02/24/my-work-git-workflow.html)
# modified by [email protected]
# modified by aconway@[redacted] - handle diffs that introduce new files
# modified by superfawkes - correct whitespaces in aconway's patch for Crucible, handle whitespaces for BSD/OSX styled sed
#
# Generate an SVN-compatible diff against the tip of the tracking branch

# Get the tracking branch (if we're on a branch)
TRACKING_BRANCH=`git svn info | grep URL | sed -e 's/.*\/branches\///'`

# If the tracking branch has 'URL' at the beginning, then the sed wasn't successful and
# we'll fall back to the svn-remote config option
if [[ "$TRACKING_BRANCH" =~ URL.* ]]
then
    TRACKING_BRANCH=`git config --get svn-remote.svn.fetch | sed -e 's/.*:refs\/remotes\///'`
fi

# Get the highest revision number
REV=`git svn info | grep 'Last Changed Rev:' | sed -E 's/^.*: ([[:digit:]]*)/\1/'`

# Then do the diff from the highest revision on the current branch
# and masssage into SVN format.
# note: On OS X (or BSD), sed interprets RHS literally in s/// - workaround: capture \n, replace tab by [tab]
git diff --no-prefix $(git rev-list --date-order --max-count=1 $TRACKING_BRANCH) $* |
sed -e "/--- \/dev\/null/{ N; s|^--- /dev/null\(\n\)+++ \(.*\)|--- \2	(revision 0)\1+++ \2	(working copy)|;}" \
    -e "s/^--- .*/&	(revision $REV)/" \
    -e "s/^+++ .*/&	(working copy)/" \
    -e "s/^diff --git [^[:space:]]*/Index:/" \
    -e "/^new file mode/d" \
    -e "s/^index.*/===================================================================/"

Thank you for lines 27-32!
git diff is bad to read, but svn diff is good.