bug#13055: 24.3.50; `scroll-margin' not always honored in Info buffers

[Dani Moncayo]

>From Emacs -Q:

1. Eval: (setq scroll-margin 1)
2. Eval: (info "(emacs) Intro")
3. Type: <backspace>

--> The current line is the last visible one, but that should never
happen, since `scroll-margin' is set to 1.  The current line should be
the penultimate visible one.


In GNU Emacs 24.3.50.1 (i386-mingw-nt6.1.7601)
 of 2012-12-02 on MS-W7-DANI
Bzr revision: 111063 cyd@gnu.org-20121202064122-kozzng5h4m9fw8ey
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --with-gcc (4.7) --no-opt --enable-checking --cflags
 -Ic:/emacs/libs/libXpm-3.5.10/include -Ic:/emacs/libs/libXpm-3.5.10/src
 -Ic:/emacs/libs/libpng-1.2.37-lib/include -Ic:/emacs/libs/zlib-1.2.5
 -Ic:/emacs/libs/giflib-4.1.4-1-lib/include
 -Ic:/emacs/libs/jpeg-6b-4-lib/include
 -Ic:/emacs/libs/tiff-3.8.2-1-lib/include
 -Ic:/emacs/libs/libxml2-2.7.8-w32-bin/include/libxml2
 -Ic:/emacs/libs/gnutls-3.0.9-w32-bin/include
 -Ic:/emacs/libs/libiconv-1.9.2-1-lib/include'

Important settings:
  value of $LANG: ENU
  locale-coding-system: cp1252
  default enable-multibyte-characters: t


-- 
Dani Moncayo