Re: regexp help

On 30.07.13 10:18, RICHARD PITMAN wrote:
> Apologies if this is a re-post, I think the first went to the wrong address...
>
> I have a fortran program in which there are two sorts of numbers,
> integers which are simply digits not followed by a period, and double
> precision numbers in the form 1.0D0, or more precisely \d\+\.\d\+D\d\+
> I would like to search for the former, avoiding the latter.

When I apply this search:

/\v([ \t]|^)[0-9]+\_s

to this line:

123 123.0 123. 456 0.123 .123 789

it stops only at each integer. Is that close enough?
(It includes leading space. But perhaps \@<= could fix that, if it's
important?)

I would have expected

/\v[ \t^][0-9]+\_s

to also match, but '^' isn't working for me as "start of line" in the
character class. (It is only as first character in the class (Vim calls
that a "collection"), that it would negate the class.)

The regex has the benefit of being largely posix, just using vim's \_s
as shorthand for (whitespace or EOL). (Most posix implementations have
extensions, so why shouldn't vim?)

Erik

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