ZyX wrote:
> After launching
> echo $':echom "Here"\nsshsshss:redir! >messages\n:messages\n:redir
> END\n:qa!\n' | vim
> -u NONE -c 'so test-expr-count.vim' -c 'normal a...' -c 'normal ssssss'
> I get the following output in messages file:
>
> Messages maintainer: Bram Moolenaar <[email protected]>
> 0
> 0
> 0
> 0
> 0
> 0
> Here
> 1
> 3
> 1
> 2
> 1
> 1
>
> while expected to have all 1's. Contents of `test-expr-count.vim':
> function! DelNthSpace()
> echom v:count1
> return virtcol('.').'|'
> endfunction
> nnoremap <expr> s DelNthSpace()
> I get almost the same results for `v:count' and any bar movements, but
> not with other movements and expressions. Tested on vim-7.3 and
> vim-7.3.62-r840c3cadb842.
If I understand it correctly, your problem is that v:count and v:count1
are not reset when evaluating the expression of a mapping when there is
no count.
What happens is that the variables are only set when entering a count,
and after the command character has been entered. I suppose we also
need to set them before getting the first character, when we don't know
yet whether it's a count or not. That's when the expression will be
evaluated when there is no count.
Try out this patch:
*** ../vim-7.3.063/src/normal.c 2010-10-13 18:06:42.000000000 +0200
--- src/normal.c 2010-11-24 13:10:46.000000000 +0100
***************
*** 648,653 ****
--- 648,669 ----
dont_scroll = FALSE; /* allow scrolling here */
#endif
+ #ifdef FEAT_EVAL
+ /* Set v:count here, when called from main() and not a stuffed
+ * command, so that v:count can be used in an expression mapping
+ * when there is no count. */
+ if (toplevel && stuff_empty())
+ {
+ long count = ca.count0;
+
+ /* multiply with ca.opcount the same way as below */
+ if (ca.opcount != 0)
+ count = ca.opcount * (count == 0 ? 1 : count);
+ set_vcount(count, count == 0 ? 1 : count, set_prevcount);
+ set_prevcount = FALSE; /* only set v:prevcount once */
+ }
+ #endif
+
/*
* Get the command character from the user.
*/
--
ARTHUR: The swallow may fly south with the sun, or the house martin or the
plover seek warmer hot lands in winter, yet these are not strangers to
our land.
SOLDIER: Are you suggesting coconuts migrate?
"Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
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\\\ an exciting new programming language -- http://www.Zimbu.org ///
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