Completion menu does not show multiple snippets with same prefix

[flotisable]

I'm using vim-mucomplete and have installed vim-vsnip-integ.

Recently, I'm trying multiple snippets with same prefix since there are different snippets for different codebase, but the complete menu only show the first one, as shown in the image(I have 2 snippets with prefix if)

There is issue(#160) asking about the feature and it seems the feature is supported.

I have found there is has_key function call in the vsnip#get_complete_items function to skip the item with same prefix. If I comment out the checking, multiple snippets with same prefix can show up as expected, while I can not expand the snippet by just complete it.

Checking the git log shows the has_key function is added in commit 70af953 to fix the issue #143

Is the support for multiple snippets with same prefix dropped intentionally or is it a bug and should be fixed?
And is there way to expand the snippet by just complete it when there is multiple snippet with same prefix?