integration with `helm-occur'

[Eoksni]

There is a package helm (https://github.com/emacs-helm/helm), successor of anything.
And there is helm-occur command (it is a replacement for usual occur).
It displays a list of found occurs, and by pressing C-j it makes main buffer show that particular occur in the buffer.

I managed to make helm buffers to be displayed in popup manner by adding (add-to-list 'popwin:special-display-config '("^\\*helm.*\\*$" :regexp t)).
But this helm-occur command misbehaves: after pressing C-j the *helm occur* window gets closed.

Here what it looks like:

After M-x helm-occur (notice *helm occur* window is there)

And after C-j (notice *helm occur* window is gone which shouldn't happen)

And, without popwin, how it should look like after C-j(notice *helm occur* window is there)

Running emacs -Q with init file:

;; adding package paths to `load-path'
;; ...

(require 'helm-config)

(require 'popwin)
(setq display-buffer-function 'popwin:display-buffer)
(add-to-list 'popwin:special-display-config '("^\\*helm.*\\*$" :regexp t))

GNU Emacs 24.3.1 (i386-mingw-nt6.2.9200) of 2013-03-18 on MARVIN
helm revision 32e0d5a (https://github.com/emacs-helm/helm)
popwin revision fe508ce

[m2ym]

Perfect reporting. Thanks.

[Eoksni]

Thanks for your kind words :)
In case you are not familiar with helm and going to investigate on this one, some additioinal info might be helpful for you:
helm can be easily installed with elpa;
the actual command behind that C-j is helm-execute-persistent-action IIRC

[m2ym]

a9386cd

The problem is caused by calling sit-for within with-selected-window that causes popwin:close-popup-window-timer fired and the popup window closed.