Re: "in word" sorting ... how ?

On 11/19/2010 09:55 PM, meino.cramer@gmx.de wrote:
> Is it possible to search/highlight line-pairs (a pair with
> "NameOfParameter" only differing in "l-" and "r-") which absolute
> values differ (ignoring again the first column)?
>
> For example:
>
> setup l-NameOfAParameter 0.5
> setup r-NameOfAParameter -0.5
> intro l-NameOfAnotherParameter 2.71818281
> intro r-NameOfAnotherParameter 3.14159259
>
> Line 3 and 4 will be found/highlighted then.

I'm not sure it's easy to highlight those that *differ* in
absolute-value, but you could do a little jiggery to find those
that are the *same* in absolute value and make them dimmed.
Something like this (untested)

:match Comment
/^\(\w\+\s\+\)l\(-\w\+\)\s\+\(\d\+\.\d\+\)\n\1r\2\s\+-\3$/

This assumes that the positive value always proceeds the negative
value. If that can be inverted, you might have to do two checks:

:2match Comment
/^\(\w\+\s\+\)l\(-\w\+\)\s\+-\(\d\+\.\d\+\)\n\1r\2\s\+\3$/

to catch the other cases (just moving the "-" before the 3rd
capture group, and out from before the 3rd capture-group-instance
(the \3). If you were feeling ambitious, this could be combined
with a little obscurity, but unless you need it, I'd just use
both ":match" and ":2match" for this.

The first capture group snags the "setup<whitespace>". It then
requires-but-ignores the "l" prefix. The second capture group
snags the "-NameOfAParameter". Some whitespace is
required-but-ignored. It then captures the positive decimal
number (tweak the "\d\+\.\d\+" if the decimal portion is optional
and you can have integers or scientific-notation in this field)
as the 3rd capture group.

Once it has the bits from the first line, it then requires a
newline, the 1st match, the "r"-prefix, the 2nd match, some
whitespace, a minus sign and the 3rd match (the number). Reword
accordingly for the "negative-comes-before-positive" version.

By using "Comment" as the highlight type, that's usually a more
subdued color in most of my color-schemes (in my case,
dark-gray-on-black) so the cases you're interested in should pop out.

Hope this helps.

-tim

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