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[O] bug#19914: 25.0.50; `org-store-link' invokes function to add to `org

From: Nicolas Goaziou
Subject: [O] bug#19914: 25.0.50; `org-store-link' invokes function to add to `org-store-link-functions' twice
Date: Fri, 01 Dec 2017 21:58:37 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

Nicolas Goaziou <address@hidden> writes:

> Hello,
> Drew Adams <address@hidden> writes:
>>> This means that it will have done its thing TWICE: once just to check
>>> whether it should/could do its thing and another time so that it does
>>> its thing.
>> Also, the doc of `org-store-link-functions' says nothing about the
>> function being called twice.  It says only:
>> "Each function should check if it is responsible for creating
>>  this link (for example by looking at the major mode).
>>  If not, it must exit and return nil.
>>  If yes, it should return a non-nil value after a calling
>>  `org-store-link-props' with a list of properties and values."
>> (And "a calling" is a typo - it should be "calling".)
>> This doc is essentially a spec telling you what a function for this
>> list should do.  From the doc, its purpose is to (a) check whether
>> it should call `org-store-link-props' and (b) if so, call it and
>> return non-nil, else return nil (without calling it).
>> Nothing suggests that the function, if invoked to define a link,
>> will be invoked twice: once for (a) (even though (b) will also be
>> done then) and a second time for (b).
> This function no longer invokes twice the function used to create the
> link.

Closing this bug.

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