Thanks Takayuki, it looks very good.

Is there a reason why you believe it's a good idea to have a Travis build status badge of the dev branch in the main readme.md (aka github status page) ?

Oops, I'm too late ⏰
I think build badge will indicate :

• It has automated test.
• 'Failed' status tells to users "you should not use this branch, for now".

And I've overlooked .travis.yml in master branch. So I would like to fix my commit (7290199) like this :

Branch	Status
master
dev

|Branch      |Status   |
|------------|---------|
|master      | [![Build Status](https://travis-ci.org/Cyan4973/lz4.svg?branch=master)](https://travis-ci.org/Cyan4973/lz4) |
|dev         | [![Build Status](https://travis-ci.org/Cyan4973/lz4.svg?branch=dev)](https://travis-ci.org/Cyan4973/lz4) |

Yeah, looks great

Mmmh, does that work ?
I've updated the readme as suggested (dev branch)
to display a small table with master/dev branches status,
but I've got the feeling that both tags show the same status, and link to the same address.

It seems working. Here is my experimental branch and my build history.

• My dev branch has never been built because I've never pushed dev branch to my repo.
• My travis-ci branch has bad Makefile to force error.

but I've got the feeling that both tags show the same status, and link to the same address.

Yes. Link URL (second paren) is same.

You can see a badge snippet at Travis CI.
Click build | passing image button in upper right corner, then dialog will popup. Also you can change branch list box in the dialog.

OK, thanks, your example is very demonstrative,

indeed, all 3 cases do display differently, even though they do link to the same address.
Clear enough, thanks Takayuki