Re: [Nano-devel] searching for certain UTF8 characters also finds ghosts

[Mark Majeres]

Hi Benno,

It looks like ISSET(BACKWARDS_SEARCH) needs the same adjustment.  It's
the line right above your current fix.

--Mark


> Hi all,
>
> To reproduce, start nano in a UTF8 locale and type or paste
> the following string into an empty buffer:
>
> ?ooo?ooo?
>
> Then type  ^W  ?  <Enter>.  Then keep typing M-W and see
> how it finds six "occurrences" of ? in that line: three
> on the correct locations, and three just after them, as
> if seeing an afterimage of the thing.
>
> Strangely this happens only for characters in the range
> U+00A0 to U+00BF, which baffles me.  (I've tested it with
> ?, ?, ?, ?, ? -- they all get doubly found -- but also
> with ?, ?, ?, ?, ?, ?, and ? -- they all are found once.)
>
> Anyway, the attached patch fixes the issue for me,
> but I'm pretty sure this isn't a complete fix and
> might create other issues.  So please test.
>
> (This problem was first reported in another form in
>   https://savannah.gnu.org/bugs/?42175 .)
>
> Benno
>
> --