[O] Bug: (R?) colnames sometimes appear, sometimes don't [9.1.13 (release_9.1.13 @ /usr/local/share/emacs/site-lisp/org/)]

[Greg Minshall]

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

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------------------------------------------------------------------------
hi.  it appears, at least for R, with :colnames in its default setting
(nil, i believe), if there are multiple :var arguments on the
#+BEGIN_SRC line, colnames for an hline'd table will appear iff the :var
for that table appears on the #+BEGIN_SRC line *before* any :var for a
*non* hline'd table.

small example follows.  (this was run, and behaved similarly, on a more
standard R:
----
R version 3.4.4 (2018-03-15) -- "Someone to Lean On"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
----
)

cheers, Greg

>>>>>>>
#+name: a
| this | is   |
|------+------|
| now  | test |

#+name: e
| colnames |

#+BEGIN_SRC emacs-lisp
(require 'ob-R)
#+END_SRC

#+RESULTS:
: ob-R

#+BEGIN_SRC R :var a=a :var e=e :results output
print(colnames(a))
print(colnames(e))
#+END_SRC

#+RESULTS:
: [1] "this" "is"  
: [1] "V1"

#+BEGIN_SRC R :var e=e :var a=a :results output
print(colnames(a))
print(colnames(e))
#+END_SRC

#+RESULTS:
: [1] "V1" "V2"
: [1] "V1"
<<<<<<<<<<


Emacs  : GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
 of 2018-09-07
Package: Org mode version 9.1.13 (release_9.1.13 @ 
/usr/local/share/emacs/site-lisp/org/)

current state:
==============
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