Calling 'org-babel-mark-block' with 'M-x cmd' and 'M-: (cmd)'

[Thorsten Jolitz <tjolitz@googlemail.com>]

Hi List, 

just wondering (and curious) if this is a bug or (in some way) expected
behaviour:

Say point is at the beginning of the first line of an Org-mode source
block:

,------------------------------------------------
| #+begin_src plantuml :file er-class-diagram.png
| scale 600 width ...           # point at beg-of-line
`------------------------------------------------

Now, when I call interactive command org-babel-mark-block' either with
'M-x org-babel-mark-block' or 'C-c C-v C-M-h', the body of the source
block is (visibly) marked as expected (transient-mark-mode is on). 

But with the point at the same position, evaluating with  'M-:' 

,--------------------------------------
| Eval: (org-babel-mark-block)
`--------------------------------------

returns the position of point without (visibly) marking the source-block
body. 

-- 
cheers,
Thorsten