Migrating to r-gregmisc organization

[arni-magnusson]

Hi Greg,

Below is a method we can use to migrate packages to the r-gregmisc organization. Note that in the following example using gdata, we end up destroying the local repository ~/git/warnes/r-gregmisc on our hard drive, but everything remains intact on https://github.com/warnes/r-gregmisc.

A. Create an empty repository gdata on https://github.com/r-gregmisc. I do this manually in a web browser.

B. Open a shell and run:

# 1 Environment variables
FROM=~/git/warnes/r-gregmisc
TO=~/git/r-gregmisc
PACKAGE=gdata

# 2 Create a stripped-down FROM repo that only includes gplots history
cd `dirname $FROM`
git clone git@github.com:warnes/r-gregmisc.git
cd $FROM
git remote rm origin  # make sure we don't destroy anything on GitHub
git filter-branch --subdirectory-filter $PACKAGE -- --all

# 3 Clone TO repo
cd $TO
git clone git@github.com:r-gregmisc/$PACKAGE.git
cd $PACKAGE

# 4 Transfer
git remote add transfer $FROM
git fetch transfer
git branch temp remotes/transfer/master
git merge --allow-unrelated-histories temp
git remote rm transfer
git branch -d temp
git push origin master

# 5 Remove stripped-down repo
rm -rf $FROM

C. Tag releases, edit repo description, add README.md, etc.