On Wed, Jun 27, 2007 at 11:58:30PM -0700, Josh Triplett wrote:
> Jan Engelhardt wrote:
> > On Jun 28 2007 06:29, dave young wrote:
> >> IMHO, another cause of trailing whitespace is human error, for
> >> example long lines breaking will easy to cause the first line with one
> >> traling whitespace (original space between the last two words).
> >
> > Most common errors (to me) are:
> >
> > - hit return+tab too quickly that it interchanges, hence producing
> > the unwanted \t\n
> > - hit return+return to start a new paragraph of code;
> > the intermediate line remains indented if autoindent is on.
>
> Interestingly, emacs gets that case right: when you hit enter it places the
> cursor at the properly indented insertion point, but if you leave the line
> without typing anything it does not leave the indentation. I thought I
> remembered vim doing the same thing, but I just tested and it appears not. It
> seems to avoid leaving subsequent lines indented, but not the first one.
I've previously found that vim's "cindent" mode is better than
"smartindent", which is better than "autoindent". However, as of vim
6.3 autoindent seems to be fairly well off; the following does TRT:
`int SPC foo() RET { RET C-t int SPC x; RET RET foo(); RET'
(leaving an empty line between "int x;" and "foo();"). However, the
following does leave a line matching /^ +$/ even in smartindent and
cindent modes:
`int SPC foo() RET { RET int SPC x; RET SPC BS bar(); RET'
that is, if you edit the autoindented line before leaving it blank, then
vim 6.3 will not remove the autoindent spaces when you leave the line.
-andy
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