On 2009-09-01, Gary Johnson wrote:
> To observe this problem, start gvim from a Windows Command Prompt as
>
> gvim -N -u NONE -U NONE
>
> then define this mapping:
>
> imap ,= <Esc>0y$!!echo d<CR>I = <Esc>0PA
>
> Enter insert mode on a empty line and type
>
> abc
>
> followed by
>
> ,=
>
> to trigger the mapped operation. You will see this line with the
> cursor positioned between the b and the c.
>
> abc = d
>
> This is incorrect: the cursor should be immediately to the right of
> the d. At this point, type some letter, say x, and the cursor will
> jump to the right so that you will see this:
>
> abc = d x
>
> with the cursor immediately to the right of the x. This is also
> incorrect: there should be no space between the d and the x.
>
> I first observed this problem using gvim 7.2.148 on Windows XP. I
> just updated to 7.2.245 from the Cream site and the results are the
> same.
>
> The DOS version of vim 7.2.245 has only the second bug, the extra
> space. It (almost) correctly puts the cursor to the right of that
> extra space following the d as soon as the mapping is executed.
>
> Neither problem appears in Cygwin's package of vim 7.2 nor in a vim
> 7.2.148 I built on Linux. I have not tried gvim on Linux to see if
> the problem is there.
I've done a little more experimenting with this and have discovered
two things. First, I can work around the problem by adding a redraw
command to the end of the mapping,
imap ,= <Esc>0y$!!echo d<CR>I = <Esc>0PA<C-O><C-L>
Second, the spurious space at the end of the line appears to be an
artifact of Windows' echo. If I use some other command there, such
as UnxUtils' grep, there is no extra space. I had chosen echo in
place of the command I use in the actual mapping, nickle, to make
the first problem easier for others to replicate.
I should add, too, that this redrawing problem doesn't appear if one
types the rhs of the mapping--it only happens if those commands are
executed by typing the lhs of the mapping.
I also verified that the problem does not occur using gvim 7.2.148
on Linux. The problem appears only on the Windows GUI version of
gvim.
Regards,
Gary
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