Re: Info reader - issues finding first index entry

[Charles Reilly]

On 27/09/2022 6.58 pm, Gavin Smith wrote:
> On Tue, Sep 27, 2022 at 06:07:08PM +0100, Charles Reilly wrote:
> > Hi,
> >
> > Using info I have had some issues with finding the first entry in the index.
> > For example, try running "info gzip".  The first entry in the concept index
> > for gzip is "bugs".  Some example searches:
> >
> >      ibugs   - Succeeds
> >      ibu     - No entries containing 'bu'.
> >      Ibugs   - No entries containing 'bugs'.
> >      Ibu     - No entries containing 'bu'.
> >
> > It seems that the index-search only finds the first entry if it is an exact
> > match.  The virtual-index never finds the first entry.
> >
> > Four similar tests for the second index entry, "concatenated files", all
> > succeed.
> >
> > I'm using info version 6.7.  A similar bug was reported previously:
> > https://lists.gnu.org/archive/html/bug-texinfo/2010-07/msg00015.html
>
> A bug like this was fixed in March 2022.  This was reported here:
>
> https://lists.gnu.org/archive/html/bug-texinfo/2022-02/msg00105.html
>
> and fixed on 2022-03-09.  It was a different issue that was reported in 2010.

Thank you, I missed that.  I've built the latest source from savannah 
and tried again.  Now I get:

    ibugs   - Succeeds
    ibu     - Succeeds
    Ibugs   - No index entries containing 'bugs'.
    Ibu     - Succeeds

Everything works except a virtual index with an exact match on the first 
index entry.

There is also still a slight weirdness with the index search.  Normally 
after a search with a single result, entering ',' for the next result 
gives something like "No more index entries containing 'concat'".  But 
if the result was the first one in the index it gives "No index entries 
containing 'bu'", without the "more".  This is no great problem but it 
does suggest something odd is going on.