Background man on OS X truncates end of buffer

[John Ruttenberg]

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In GNU Emacs 21.2.1 (powerpc-apple-darwin, X toolkit)
 of 2003-05-14 on scallop.hollyrd
configured using `configure  powerpc-apple-darwin --prefix=/sw --with-x 
--with-x-toolkit=lucid --without-toolkit-scroll-bars --without-gif 
'--infodir=${prefix}/share/info' '--mandir=${prefix}/share/man' 
'--libexecdir=${prefix}/lib''
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: en_US
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

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

Try to get a man page for bash wth

    M-x man
    bash

The end of the buffer is truncated.  This is also true of man for most other
commands.  Run under xterm, and with it's output redirected to a file, "man
bash" produces complete results.  If I use edebug to look step
Man-bgproc-sentinel, I find that the buffer is already truncated, suggesting a
deaper bug perhaps.

This bug is reproducable.  It happens the same way every time.


Recent input:
M-z M-z M-z M-z M-z M-z M-v C-x C-v R E <tab> <return> 
M-x s h e l l <return> l s <return> l s SPC e m a TAB 
/ e t c <return> M-z M-z M-z M-z M-z M-z M-z M-z M-z 
M-z M-z M-z M-z M-z M-z M-z M-z M-z M-> c d SPC e m 
a TAB C-a C-k C-r b u g C-e M-> c d SPC e m a c s / 
f <backspace> e t c <return> C-x C-v f <tab> u <tab> 
<return> M-x r e p o <tab> r <tab> <return>

Recent messages:
call-interactively: Quit
Completing file name...
Partially completed
Mark set
Completing file name...
Partially completed
Mark saved where search started
Mark set
~/emacs/etc 
Loading emacsbug...done