On 25/05/14 08:17, Nikolay Pavlov wrote:
On May 25, 2014 4:24 AM, "Tony Mechelynck" <[email protected]
<mailto:[email protected]>> wrote:
>
> On 23/05/14 13:19, John Little wrote:
>>
>> On Friday, May 23, 2014 10:36:56 AM UTC+12, Nate Soares wrote:
>>>
>>> Is there a way to get the expansion of a digraph (entered e.g. with
^K in insert mode) programatically?
>>
>>
>> There isn't a vim script way to do this directly. I can think of
two ways, one somewhat unclean, the other pedestrian.
>>
>> Firstly, this approach may have side effects, might spoil your
screen layout, and harm innocent animals:
>>
>> function! ExpandDigraph(dig)
>> if a:dig !~ '^..$'
>> return ""
>> endif
>> new
>> exe "norm! a\<c-k>" . a:dig . "\<esc>"
>> let result = getline(".")
>> close!
>> return result
>> endfunc
>>
>> Secondly: capture the output of the command :digraph, (:help redir)
and reformat it to one column (that's tricky because there's lots of
funny characters), and write it to a file, say "digraphs.txt". Then,
>>
>> function! ExpandDigraph(dig)
>> if !exists("s:digs")
>> let s:digs = {}
>> for line in readfile("digraphs.txt")
>> let s:digs[line[0:1]] = line[3:]
>> endfor
>> endif
>> return has_key(s:digs, a:dig) ? s:digs[a:dig] : ""
>> endfunc
>>
>>> For example, I have vim set up to insert the ellipsis character '…'
when I type "^K..". Is there a way, programatically, to write a function
ExpandDigraph such that ExpandDigraph("..") yields "…"?
>>
>>
>> BTW, with my vim 7.4.274 on linux ".." is a digraph for "‥" U+2025
TWO DOT LEADER, not an ellipsis, "…" U+2026 HORIZONTAL ELLIPSIS. My vim
only has digraphs for U+22EF MIDLINE HORIZONTAL ELLIPSIS and U+22EE
VERTICAL ELLIPSIS. If you've defined your own digraphs, and you use my
second approach you'd have to add yours to the file.
>>
>> Regards, John Little
>>
>
> Note that nothing forbids having more than one digraph for the same
character, and in fact by default some characters have both an RFC1345
digraph and a "legacy Vim" digraph (as the latter was used before Vim
digraphs were standardized to RFC1345). Having more than one character
for a single digraph, however, is of course not possible: trying to
define a new equivalent for an existing digraph replaces it.
>
> The above function would always return the last character-pair in the
list for any given character, for instance (with the default digraphs)
n~ (the legacy digraph) and not n? (the RFC1345 digraph) for U+00F1
LATIN SMALL LETTER N WITH TILDE. (Any previous digraph for the same
character would be replaced when creating the Dictionary.)
?! Quoted functions solve forward problem: given n? return U+00F1, not
backward: given U+00F1 return n?.
Oops, sorry.
>
>
> Best regards,
> Tony.
--
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miles closer to globular cluster M13 in the constellation Hercules, and
still there are some misfits who continue to insist that there is no
such thing as progress.
-- Ransom K. Ferm
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