info index C point positioning

[Kevin Ryde <user42@zip.com.au>]

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In GNU Emacs 21.1.1 (i386-debian-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2001-12-07 on raven, modified by Debian
configured using `configure  i386-debian-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --with-x=yes --with-x-toolkit=athena --without-gif'
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: C
  locale-coding-system: nil
  default-enable-multibyte-characters: t


I noticed in Info mode pressing "i" to do an index search for a C
function often doesn't leave point at the right place in the node.

For example in the glibc manual, "i write" leaves point with the
mention of `write' at the top of the node, rather than the "Function"
definition part.


I think the regexp in Info-find-index-name doesn't account for a
return type with a function definition.  Perhaps a looser search could
be added, per below.


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