Re: python scripting: how to set the contents of a register.

On 11/12/2011 06:49 PM, Gelonida N wrote:
> On 11/12/2011 11:46 PM, AK wrote:
>>>
>>> def setreg(regname, val):
>>> """ sets register regname to string val
>>> all it does is replace " with \"
>>> and use the 'let' command to set a register
>>> """
>>> val = val.replace('"',r'\"')
>>> vim.command('let @%s = "%s"' % (regname, val))
>>>
>>>
>>> def uppercase_a(regname):
>>> """ sample command to show the use of setreg() """
>>> reg_a = vim.eval('@' + regname)
>>> reg_a = reg_a.replace('a', 'A')
>>> setreg('a', reg_a)
>>>
>>> With above python function I could now do
>>>
>>> :py setreg('a', 'ABC"\'\tDEF\nGHI')
>>>
>>> and register a would contain the string as specified in python.
>>>
>>>
>>> Should this do the job or does anybody see potential improvements?
>>>
>>
>>
>> I think that should be fine.. test if it works with unicode text?
> Hmm, probably this will fail. good point.
> For the time being I'm fine without unicode, meaning
> with buffers containing \n \r \t ' " characters
> and perhaps some ASCII text as well ;-)
>>
>> I'm not quite sure why you want to set a register contents, typically
>> you want to put register contents somewhere, so if you're using this
>> python code, why not have it skip the step and put the text where
>> you need it, e.g. in a buffer?
>>
>
> Probably you're right, that what I was asking for is rarely useful.
> I just started learning about python scripting within vim.
>
> Knowing almost nothing about vim scripting,
> but knowing basic vim commands and knowing python quite well
> I was looking for the 'basic' commands, that would allow me to interact
> with vim buffers and registers, (probably I still have to learn about
> selections / marks)
>
> My thinking was, that if I can access, buffers, registers, marks
> and if I can inject key strokes, that I should be able to
> write almost anything, that I would like to do (even if there might be
> more elegant solutions if I knew more of the vim scripting commands)
>
> One potential use case of setting a register would be to get
> text from a selection, buffer, register, process it and dump the result
> in the clipboard, such, that I could paste it into another application
> (web browser / console window, whatever)
> If I understood well I could do this by setting the '+' or '*' register.

I mostly use command, eval, buffers, windows, current.buffer and
current.line in vim python scripts.

From your earlier message: to get the selection, do something with it
and replace with new text, just cut it to a register using "ax normal
command, then simply insert new text at current cursor location.

-ak

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