Re: [PATCH] Clarify that REST is not supported on the start TIME in a time-range timestamp.

[Tom Alexander]

Potentially related, org-mode is accepting this malformed timestamp from[1]:
```
<2016-02-14 Sun ++y>
```

The org-mode documentation[2] only includes REST with TIME, defining TIME as 
"H:MMREST". The above does not have any TIME but it accepts the timestamp 
anyway:
```
(timestamp
  :type active
  :range-type nil
  :raw-value "<2016-02-14 Sun ++y>"
  :year-start 2016
  :month-start 2
  :day-start 14
  :hour-start nil
  :minute-start nil
  :year-end 2016
  :month-end 2
  :day-end 14
  :hour-end nil
  :minute-end nil
)
```

Perhaps that grammar is wrong and REST needs to be separated from TIME?

[1] 
https://github.com/howardabrams/pdx-emacs-hackers/blob/bfb7bd640fdf0ce3def21f9fc591ed35d776b26d/workshops/org-mode-gtd-feature-demo.org#L183
[2] https://orgmode.org/worg/org-syntax.html#Timestamps

--
Tom Alexander
pgp: https://fizz.buzz/pgp.asc