How to configure org-roam-buffer char length?

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14

I have thought about this a little bit more, I think a much simpler solution could be implemented - namely that which is already implemented for unlinked references - to just get the immediate line where the link is embedded.

For this, youd have to agree not to think in terms of characters back and forth - but in terms of lines

(defun custom/org-roam-preview-default-function ()
    "Return the preview content at point.

This function returns the text of the immediate line(s) where the link is located."
    (let ((beg (save-excursion 
		 (org-beginning-of-line 1) (point)))
          (end (save-excursion 
		 (org-end-of-line 1) (point))))
      (string-trim (buffer-substring-no-properties beg end))))

(setopt org-roam-preview-function #'custom/org-roam-preview-default-function)

To have say more than one line showing - change the 1’s to some N where N-1 lines back and forth would be shown

For example to show 2 lines before and 2 lines after do

(defun custom/org-roam-preview-default-function ()
    "Return the preview content at point.

This function returns the immediate line(s) where the link is located."
    (let ((beg (save-excursion 
		 (org-beginning-of-line -1) (point)))
          (end (save-excursion 
		 (org-end-of-line 3) (point))))
      (string-trim (buffer-substring-no-properties beg end))))

since
-1-1 = -2 & 3-1 =2

Therefore the following

:PROPERTIES:
:ID:       20240922T081550.535686
:END:

#+title: target

* h1
-4
-3
-2
-1
[[id:20240922T081423.122777][source]]
1
2
3
4
[[id:20240922T081423.122777][source]]

* h2

would show up as this

Backlinks (2)
target (h1)
-2
-1
[[id:20240922T081423.122777][source]]
1
2

target (h1)
3
4
[[id:20240922T081423.122777][source]]

* h2

This is a much simple solution.