mercurial automatic push on every commit

You could add a hook to run push after a successful commit.

EDIT: I just tried it out and it seems to work fine. I added the following to the .hg/hgrc file of the repository I wanted to activate automatic pushing for:

[hooks]
commit.autopush = hg push

EDIT 2: Also, you don’t have to worry about something like this:

• You’re in a repository that you don’t want to automatically push.
• You use hg -R ~/another-repo-that-autopushes commit to commit in a different repo that does automatically push.
• Will the hg push hook end up pushing the changes in the current directory instead of the one you’re committing in?

No, it won’t. According to the page I linked:

An executable hook is always run with its current directory set to a repository’s root directory.

It’s an edge case, but Mercurial handles it correctly.