bug#10784: 23.1; info doesn't follow link in Bison TOC

[Tim Landscheidt <tim@tim-landscheidt.de>]

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

- (info "(bison)")   ;; version 2.4.1
- search for TOC item "Secure?  Conform?"
- press RET
- => "No such node or anchor: Secure?  Conform?"

(Probably) relevant bits from the info file:

| [tim@passepartout ~/src/emacs]$ zgrep 'Secure\?' /usr/share/info/bison.info.gz
| * Secure?  Conform?::           Is Bison POSIX safe?
| * Secure?  Conform?::           Is Bison POSIX safe?
| File: bison.info,  Node: Multiple start-symbols,  Next: Secure? Conform?,  Prev: Implementing Gotos/Loops,  Up: FAQ
| File: bison.info,  Node: Secure? Conform?,  Next: I can't build Bison,  Prev: Multiple start-symbols,  Up: FAQ
| 11.6 Secure?  Conform?
| File: bison.info,  Node: I can't build Bison,  Next: Where can I find help?,  Prev: Secure? Conform?,  Up: FAQ
| Node: Secure? Conform?364602
| [tim@passepartout ~/src/emacs]$

Note the one vs. two spaces between "Secure?" and "Con-
form?".  The link works with info (GNU texinfo) 4.13.  The
bug is also present in a Emacs snapshot from early February.


In GNU Emacs 23.1.1 (i386-redhat-linux-gnu, GTK+ Version 2.16.6)
 of 2010-04-01 on x86-01.phx2.fedoraproject.org
Windowing system distributor `The X.Org Foundation', version 11.0.10603901
configured using `configure  '--build=i386-redhat-linux-gnu' '--host=i386-redhat-linux-gnu' '--target=i586-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--with-dbus' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xft' '--with-xpm' '--with-x-toolkit=gtk' 'build_alias=i386-redhat-linux-gnu' 'host_alias=i386-redhat-linux-gnu' 'target_alias=i586-redhat-linux-gnu' 'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-bu
 ffer-size=4 -m32 -march=i586 -mtune=generic -fasynchronous-unwind-tables''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t