Re: Expression maps and "normal"

Am 20.10.2011 22:33, schrieb David Fishburn:
> On 10/20/2011 3:50 AM, Andy Wokula wrote:
>> Am 19.10.2011 04:21, schrieb David Fishburn:
>>
>> Hi Dave!
>>
>> You want mappings with parametrized left-hand-side (?) -- there is no
>> such thing in Vim.
>>
>> Could you say more about the purpose of the additional parameter?
>>
>
> So basically we have a omap (expression map) on y which call YRMapsExpression:
> o y YRMapsExpression("<SNR>107_", "y")
>
> When I hit yy, YRMapsExpression is called, and it tacks on the call to:
> nnoremap <silent> <SID>yrrecord :call YRRecord3( myMotionParameter )<cr>
> let cmds .= a:sid. "yrrecord"
> return cmds
>
> So, when this executes, it also executes the call to YRRecord3().
>
> Other expression maps are created as well:
> ye
> yw
> yb
> ...
>
> Basically, in YRRecord3(), I want to know that "ye" was called. Right
> now, I have no idea what mapping triggered the call to this function.
>
> I could simply create a script variable and in YRMapsExpression do this:
> let s:yr_last_motion = 'ye'

You probably mean :let s:yr_last_motion = 'e'.

> Then in YRRecord3(), I have a reference to it.
>
> What I was worried about in this approach is the nesting of cmds and
> mappings, and the issue of what happens when I run macros.
>
> I wasn't sure I would have a proper stack of calls when only using a
> script variable.

YRMapsExpression() sets the variable, YRRecord3() reads the variable.

YRMapsExpression() (with {motion} being mapped to it) is an indirection
for {motion}<SID>yrrecord, and <SID>yrrecord calls YRRecord3().

I don't see how this could involve nesting.

--
Andy

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