abbreviation for non-id (lhs ends with a ',')

I do the following:
iab ,, foo
i don't get any error but still when i type the following: ,, and then a
space or a tab or CTRL-] NOTHING happens. Why?

i would expect the same behaviour as in the example for the non-id behaviour
(map.txt line 686):
:ab ;; <endofline>

So, why can the lhs be ';;' and not ',,'. (just to make sure i excluded both
from 'iskeyword' option, and 'mapleader' & 'maplocalleader' are set to
default ('\'), not that i suspect that it really matters here).

thanks so much for any help!
alex

--
View this message in context: http://old.nabble.com/abbreviation-for-non-id-%28lhs-ends-with-a-%27%2C%27%29-tp28953414p28953414.html
Sent from the Vim - General mailing list archive at Nabble.com.

--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php