Re: [PATCH] org-id: allow using parent's existing id in links to headlines

[Rick Lupton]

On Fri, 15 Dec 2023, at 12:55 PM, Ihor Radchenko wrote:
> No, it is generally not safe. For a different reason.
>
> Let me illustrate with an example:
>
> ...
>
> Conclusion: It is unsafe to use `current-prefix-arg' value. We need to
> pass this information some other way.
>
> The way I proposed is actually not any special for ID links. What I
> meant it to let-bind `org-link-context-for-files' around the whole call
> to `org-store-link-functions', so that the custom :store functions will
> get access to the adjusted value of `org-link-context-for-files'.
> Does this explanation make more sense?

Thanks for the example and explanation. Yes that does make sense, mostly. I 
assume this would look like this in org-store-link:

(let ((org-link-context-for-files (org-xor org-link-context-for-files (equal 
arg '(4))))
    (...call store link functions...))

The meaning of `org-link-context-for-files' is then shifting from being "should 
file: links include search strings (and how much should be included when the 
region is active)" from "should any link that supports search strings include 
them (and how much should be included when the region is active)". Is it 
necessary to rename it to reflect this? (e.g. to `org-link-use-context' or 
similar).

It's also then less clear what the role of `org-id-link-use-context' is and how 
it interacts with `org-link-context-for-files'. I had included 
`org-id-link-use-context' to give a way to opt out of the new behaviour (i.e. 
using the update discussed above, a search string is added if (and 
org-link-context-for-files org-id-link-use-context) ). But perhaps this is also 
unnecessarily complicated, and `org-id-link-use-context' could be removed again 
completely?

> I will update the docstring of
> `org-link-search' to explicitly specify that it is searching within the
> accessible portion of the buffer and update the callers to account for
> this.
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=89164e605
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=5c543cd9d
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=cb71bde7c
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=63ef7b924
>
> But does your code do narrowing? I did not notice it.

Not in the patch I sent, I added it later after you pointed this out.

I'll send an updated patch next.

Thanks,
Rick