git svn dcommit doesn't support --username option for file:/// urls

Hi,

'git svn dcommit' doesn't seem to honor the --username argument when my svn repository url is a file:/// url. It doesn't complain either, it just seems to silently ignore the option. My dcommits show up as the user I'm logged in as. The only way I found to change that is to 'sudo' to some other user.

The actual 'svn' command does support --username with 'svn commit'.

What I'm actually up to, is trying to make a svn to git mirror bi-directional. Right now, I have a cron job that 'git svn fetch's and 'git push origin's with some configs setup so that it does what I want.

I was experimenting with writing some scripting to go in the other direction, and my first step was seeing if I could commit to svn as any user. It seems like I should be able to and that git-svn just doesn't support it.

(BTW, I'm aware there's a lot of pitfalls I'll have to work around, and that I'll need to be very careful with verifying that the most recent 'git-svn-id:' matches the branch and revision I expect to be committing to, and that bad things will happen if I mess it up.)

Thanks, Tim