info --index not finding all indexed entries

[Ralf Wildenhues]

Hello Karl, bug-texinfo readers,

when I type
  info Automake --index AM_INIT_AUTOMAKE

and use ',' to cycle the index entries, I still never arrive at the most
important one, which is in the "Public Macros" node.  This happens with
info from 4.11 or 4.13.

automake.texi (you can use the latest stable, or git, doesn't matter)
contains code as below.  If that is not enough to reproduce the problem
I'll be glad to try to produce a small example, but I'd first like
confirmation that this isn't a user error.

... time passes ...

It turns out that if I remove the first '@acindex AM_INIT_AUTOMAKE',
then things start to work.  Does that mean index entries have to be
uniquely named?

Thanks for maintaining texinfo!
Ralf


@c Define an index of configure macros.
@defcodeindex ac
[...]
@c Put the macros in the function index.
@syncodeindex ac fn

@c Put everything else into one index (arbitrarily chosen to be the concept 
index).
@syncodeindex op cp
@syncodeindex tr cp
@syncodeindex cm cp

[...]

@node Complete
@section A simple example, start to finish

[...]
@cindex @code{AM_INIT_AUTOMAKE}, example use

[...]
@node Requirements
@section Configuration requirements

@cindex Automake requirements
@cindex Requirements of Automake

@acindex AM_INIT_AUTOMAKE
The one real requirement of Automake is that your @file{configure.ac}
call @code{AM_INIT_AUTOMAKE}.  This macro does several things that are
required for proper Automake operation (@pxref{Macros}).

[...]
@node Public Macros
@subsection Public Macros

@table @code

[...]
@item AM_INIT_AUTOMAKE([OPTIONS])
@itemx AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
@acindex AM_INIT_AUTOMAKE
Runs many macros required for proper operation of the generated Makefiles.