Difficulty pruning from the commit-history those subdirectories containing blur-encrypted files

[brannerchinese]

I like git-blur very much, and I have been using it to encrypt data in a repository while leaving the code public.

Recently I decided to try to prune the data-directory from the commit history, using

git filter-branch --tree-filter 'rm -rf data' --prune-empty --tag-name-filter cat -- --all

This command normally works well, but in the context of git-blur it generates errors whenever it encounters the commit of an encrypted file. Are there known ways of circumventing this problem?

Below is a sample error message:

/usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/conf.rb:43:in `rescue in read_configuration': uninitialized constant GitBlur::MissingConfiguration (NameError)
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/conf.rb:34:in `read_configuration'
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/actions.rb:26:in `initialize'
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/cmdparser.rb:48:in `new'
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/cmdparser.rb:48:in `cmd_clean'
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/cmdparser.rb:38:in `call'
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/lib/git-blur/cmdparser.rb:38:in `run'
    from /usr/local/lib/ruby/gems/2.1.0/gems/git-blur-0.0.1/bin/git-blur:6:in `<top (required)>'
    from /usr/local/bin/git-blur:23:in `load'
    from /usr/local/bin/git-blur:23:in `<main>'
error: external filter git-blur clean failed 1
error: external filter git-blur clean failed

[end]

[acasajus]

It's taken me A LOT of time to see this. I'm sorry I didn't notice.

To respond. I haven't looked into git-blur in a LOOONG time. If you have any suggestion on how to fix it I'll be more than happy to merge a pr or at least get a pointer in where to look at.