Re: Understanding Vim exclusive motions.

Am 2015-03-29 22:46, schrieb arunj:
> Hi all,
>
> I have just started with vim, and i need some help. This is a bit
> lengthy, please bear with me :).
>
> I refer to :
> http://vimdoc.sourceforge.net/htmldoc/motion.html#exclusive.
> Specifically, the following text:
>
> Which motions are linewise, inclusive or exclusive is mentioned with
> the
> command. There are however, two general exceptions:
>
> 1. If the motion is exclusive and the end of the motion is in column 1,
> the
> end of the motion is moved to the end of the previous line and the
> motion
> becomes inclusive. Example: `}` moves to the first line after a
> paragraph,
> but `d}` will not include that line.
>
> Given the following piece of text to start with:
>
> This is just a random paragraph.
>
> This is another random paragraph (Some text inside brackets).
>
> This is a third paragraph.
>
> I start with my cursor on the character `S`, just after the `(`, in
> the second paragraph.
>
> I do the following commands - `d}` - in normal mode. I get the
> following:
>
> This is just a random paragraph.
>
> This is another random paragraph (
>
> This is a third paragraph.
>
> The cursor is now on the `(` in the second paragraph. This is
> expected as per the rule above: `}` is an exclusive motion, that
> causes the cursor to go to column 1 of the blank line between
> paragraphs 2 and 3; as per the rule, the cursor goes to the previous
> line (on the full-stop), and the motion becomes inclusive (the
> full-stop is deleted as part of the `d` operation).
>
> Let's take the original text again, with the cursor again on the `S`.
>
> If i do the following commands - `d{` - in normal mode, i would expect
> to get the following, because the `{` is an exclusive motion, and it
> causes the cursor to go to column 1 of the blank line between
> paragraphs 1 and 2: everything between the full-stop of paragraph 1
> and the `S` are deleted, inclusive.
>
> This is just a random paragraphome text inside brackets).
>
> This is a third paragraph.
>
> But what actually happens is this:
>
> This is just a random paragraph.
> Some text inside brackets).
>
> This is a third paragraph.
>
> With the cursor being on the `S`.
>
> Is this an exception to the exception? Or am i simply getting it all
> wrong?

What you are seeing here is, that exclusive/inclusive always works to
that end of the motion that is further away from the buffer's start and
does not depend on the direction of the motion. Therefore the S is not
included in the 'd' command and therefore the empty line won't be joined
with the line above as you expected.

Best,
Christian

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