Re: Git on Windows, CRLF issues

On Wed, Apr 23, 2008 at 12:58:57PM +0200, Johannes Sixt wrote:

In practice, this is not sufficient. The blob filter must have an
opportunity to decide what it wants to do, not just blindly munge every
blob. The minimum is a path name, e.g. in $1:

	new=$(git cat-file blob $sha1 |
		$SHELL_PATH -c "$filter_blob" ignored "$path" |
		git hash-object -w --stdin)

I intentionally left that out, because:

  - I assumed if you were going to do trickery with pathnames, you
    should just be doing an index filter

  - it violates the cache assumption, which is that blob $X is always
    transformed the same way

I assume you are wanting to do something like:

  git filter-branch --blob-filter '
    case "$1" in
      *.jpg) cat ;;
          *) tr a-z A-Z ;;
    esac
  '

Obviously it is unlikely to get the same blob sha1 as "foo.jpg" and
"foo.txt", but it just feels a little wrong.

-Peff