[Bug 751450] parse/grammar.y: Allow multiple links to happen.

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=751450

Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> changed:

           What    |Removed                     |Added
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                 CC|                            |nicolas.dufresne at collabora.
                   |                            |co.uk

--- Comment #13 from Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> ---
I thought about * for a moment, but it expends in a shell. So I'm offcially
removing this possibility ;-P

If we think of regex, + would be one or more, ? usually means optional. I
believe for a pipeline to work, one or more link will have to happen, makes +
possibly a better choice.

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