org-open-link-functions

org-open-link-functions is a variable defined in `org.el'.
Its value is

nil

• This variable may be risky if used as a file-local variable.

Documentation:
Hook for functions finding a plain text link.
These functions must take a single argument, the link content.
They will be called for links that look like [[link text][description]]
when LINK TEXT does not have a protocol like "http:" and does not look
like a filename (e.g. "./blue.png").

These functions will be called *before* Org attempts to resolve the
link by doing text searches in the current buffer - so if you want a
link "[[target]]" to still find "<>", your function should
handle this as a special case.

When the function does handle the link, it must return a non-nil value.
If it decides that it is not responsible for this link, it must return
nil to indicate that that Org-mode can continue with other options
like exact and fuzzy text search.