Re: questions about submatch()

On Monday, April 23, 2012 5:19:18 AM UTC-5, rameo wrote:
> On Monday, April 23, 2012 8:41:33 AM UTC+2, rameo wrote:
> > Hello to all readers,
> >
> > I use submatch() to increment/decrement numbers in a text.
> >
> > My questions are:
> > 1) In my country the "comma" is seen as decimal separator.
> > submatch() doesn't seem to recognize the comma but use the "dot"
> > as separator.
> > Is there a way to let submatch() know that the decimal separator in the
> > text is the comma?
> > 2) Often the numbers in my text have thousand separators.
> > submatch() doesn't recognize them.
> > %s/1.000.000/\=submatch(0) + 10/g gives as output 11
> > How can I tell submatch that dots are thousand separators?
> > 3) In my text I have integers and float values.
> > If I use %s/"a search string"/\=string2float(submatch(0)) [+-]nr/g all
> > non float values have ".0" after the conversion.
> > If I use %s/"a search string"/\=submatch(0) [+-]nr/g there are no decimals
> > added after the conversion when there are float values.
> > How can I let submatch() know that it has to make a float value when
> > the increment/decrement value or the number self is a float, else it has
> > to see the value as integer?
> >
> > Tnx,
> > Rameo
>
> John,
>
> I don't know exactly what you think is not clear in my question and how examples can help to clarify.
>
> In text what I use the comma is the decimal separator.
> The dot is a thousand separator.
> submatch() doesn't recognize the thousand separator and doesn't recognize the comma as decimal separator.
> submatch() handles different regional settings as the one in my country.
> Is there a way to let submatch() my regional settings?

submatch() has absolutely nothing to do with decimal separators. Absolutely nothing. submatch() only gets a string which matched some backreference in a regular expression.

Looking at your examples, you're really asking if Vim's floating-point calculations can use a comma as a decimal separator (it can't, see :help floating-point-format) and a decimal as a thousands separator (I don't think I know of ANY program that understands thousands separators, whether they be a '.' or a ','; I'm pretty sure Vim cannot recognize them either).

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