Re: FRESH-LINE and #\Tab

[Sam S. <sd...@gn...>]

> * Bruno Haible <oe...@py...> [2005-06-22 23:18:49 +0200]:
>
> Sam wrote:
>> PS. has the FRESH-LINE issue been settled?
>>     <http://article.gmane.org/gmane.lisp.clisp.devel:14259>
>
> Although in general the line position after outputting a tab is
> undefined, I can admit that in all cases it will be > 0, and that
> FRESH-LINE should notice this.
>
> The fix will be to complement the stream's strm_wr_ch_lpos field with
> a strm_wr_ch_lpos_positive field that is 1 if the line-position is
> known to be > 0 and 0 otherwise. That's for built-in streams. For Gray
> streams, test whether (STREAM-LINE-COLUMN stream) is > 0. It will be a
> bit of a slow-down. Oh well. And since it's a change that touches a
> dozen of C functions, it must be delayed after 2.34.

this sounds too complex.
what happens now to strm_wr_ch_lpos when #\TAB is output?
why not just increment it by 1? (or by 5 - #\#, #\\, #\T, #\A, #\B :-)

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
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