Choose where org-agenda-tree-to-indirect-buffer window opens

Question

If I have an org file open:

 +----------------------------------------+
 |                                        |
 |                                        |
 |                                        |
 |                org file                |
 |                                        |
 |                                        |
 |                                        |
 |                                        |
 |                                        |
 |                                        |
 +----------------------------------------+

And open the Agenda view:

 +----------------------------------------+
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |    org file      |       agenda        |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 +------------------+---------------------+

And then hit TAB on a todo item, it does (org-agenda-goto) and jumps to the item in the original window:

 +----------------------------------------+
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |    org file      |       agenda        |
 |    jumped to     |                     |
 |    item          |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 +------------------+---------------------+

Which is great. If I do (org-agenda-tree-to-indirect-buffer), however, it opens in a teeny window below the agenda:

 +----------------------------------------+
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |    org file      |       agenda        |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  +---------------------+
 |                  |     org item i.b.   |
 +------------------+---------------------+

What I'd like to happen is:

 +----------------------------------------+
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |    org item i.b. |       agenda        |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 |                  |                     |
 +------------------+---------------------+

I could do this by just typing TAB , s b, which isn't so bad, but out of general interest I'm wondering how do I control the placement of the new window that org-agenda-tree-to-indirect-buffer creates?

Answer 1

I agree with this request. Here's a workaround:

In org-agenda.el I found the function: org-agenda-tree-to-indirect-buffer and changed the line which calls "split-window".

I added the parameters nil 't to the split-window call:

Before:

 (unwind-protect
        (unless (and indirect-window (window-live-p indirect-window))
          (setq indirect-window (split-window agenda-window)))

After:

(unwind-protect
        (unless (and indirect-window (window-live-p indirect-window))
          (setq indirect-window (split-window agenda-window nil 't)))

It's a hack, and may mess up other functionality but it works for me.