Allow specifying wildcard tag without getting a pre-release version

[biinari]

Using a wildcard for the latest tag can install a pre-release tag instead of the stable tag.

For example, the following installs v1.29-rc.1 instead of the later stable tag v1.29.

Plug 'fatih/vim-go', { 'tag': '*' }

Desired solution

An option to exclude pre-release tags would be great. Perhaps as a regex like:

Plug 'fatih/vim-go', { 'tag': '*', 'tag-exclude': '-(alpha|beta|rc)' }

Partial Workaround

It is possible to configure git to sort the stable tag after pre-release tags of the same version by setting git versionsort.suffix, like:

git config --global versionsort.suffix '-alpha'
git config --global --add versionsort.suffix '-beta'
git config --global --add versionsort.suffix '-rc'

or equivalently in ~/.gitconfig with:

[versionsort]
	suffix = -alpha
	suffix = -beta
	suffix = -rc

This does not prevent a pre-release tag from being installed, but at least it resolves to the stable tag for a version once it is released.

Or, you can specify the latest tag and remember to change it when running :PluginUpdate.

[junegunn]

Makes sense. How about supporting a lambda expression (a function reference) for flexibitily?

Plug 'fatih/vim-go', { 'tag': { t -> t !~ '(alpha|beta|rc)$' } }

[biinari]

That would be great.

For this example, anchoring to the end will also need to include the number, so perhaps it would be:

Plug 'fatih/vim-go', { 'tag': { t -> t !~ '-rc\.\d*$' } }