Re: Retrieve the argument of a prior Ex mode command (back on-list)

On Mon, Jan 23, 2012 at 04:24:52PM EST, Tim Chase wrote:
> On 01/23/12 14:57, Chris Jones wrote:
>> On Wed, Jan 18, 2012 at 08:42:51PM EST, Tim Chase wrote:

>>> =================================================
>>> let item = histget(getcmdtype(), -1)
>>> =================================================

>> Unless I missed something, I don't think this is going to work,
>> because you need a variable to keep track of where you are in the
>> history across Alt+period keyboard actions.. (?)

> I think the answer to your question is the "-1" in the histget() call
> which gets the most recent history entry. If you use a positive
> number, it starts from 1 through however many history items you have.
> If you use a negative index, it starts indexing the
> most-recently-entered-command end of the history (same as for arrays).

> :help history-indexing
> :help list-index

> The exception I could see would be if you knew that you were only
> interested in certain types of Ex commands (in your contemporaneous
> message, your "g:cmdlist") and would thus want to search backwards in
> your history until you hit such a command and use *that* command to
> pull from rather than the most recent Ex command.

Ah, yes.. The thing is, I tried your script 'as is' and it did not work
as I expected.. so I probably jumped to conclusions..

What you are saying makes excellent sense.

On the other hand, I find that managing my own index variable gives me
more flexiblity/clarity than relying on a side-effect of the histget()
function.

CJ

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