How can I use the current org-mode buffer as a Target in an org-capture template?

Question

I want to design an org-capture definition that targets the current org file. Looking at the list of available targets it's not clear to me what I should use. Considering using (current-buffer) as the file name in the Target definition.

Answer 1

(file buffer-name) will set the target to the current buffer. Here's an example capture template:

("T" "test" plain (file buffer-name) "\n- %?")

Explanation: The doc string for org-capture-templates says:

... Most target specifications contain a file name. If that file name is the empty string, it defaults to ‘org-default-notes-file’. A file can also be given as a variable or as a function called with no argument.

Emphasis added.

In this case, the function is buffer-name, which gives the file name associated with the current buffer (when called with no argument).