Monday, February 18, 2013

Re: trouble with pattern, character collections

> No, it is because "\n" is evaluated to a true line feed, so "[^\n]"
> matches anything but ASCII NUL and ASCII 10, while '[^\n]' matches
> anything but ASCII NUL (which is used internally by Vim to distinguish
> lines from each other (e.g. a line seperator), so that a . matches
> anyhing in the buffer but the line seperator)

Christian: Once and for all - I don't want anybody to explain me that
[^\n] behaves in a wired way because '.' should behave the way it does.

I'm *not* talking about internals. I'm talking the user interface you
and me and new users are faced with every day. So help me think about
whether there is a way to improve the situation.

So why should anybody write [^\n] if you can use '.'? So why make [^\n]
behave the same way? Why not make it raise an error such as:

E99999: For odd reasons you should try "[\n]" instead of '[^\n]' and be
done. True reason see long reply by Christian on ml ..

Trouble solved within 2 min. No debugging why vim does not behave the
way you expect. This guard would be trival to implement. if []
collections are negated and contain \n show the message.
And it would not break backward compatibility. Which is the use case for
allowing '[^\n]' at all?

I'm not saying it solves the issue, but it would cause less pain,
do you agree on this?

I wrote vim-addon-manager to improve usage experience for users - and
this is another case just driving me crazy which I think needs to
improved - the issue is in which way.

Marc Weber

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