calc-mode

[ChrisK]

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

The following does work in CVS Emacs-21 on Mac OS X, but does NOT work
in CVS Emacs-22 on OS X.  It also fails in "Advanced Carbon Emacs-22".

The calc-mode has an calc-embedded feature which allows assignments,
such as "foo:=7".  Then other embedded equations in the same buffer
can access this value "foo + 1 =>" which evaluates to "foo + 1 => 8".

I have tested both normal language and tex language ("foo := 7" and
"foo \gets 7")

It works in Emacs-21 but in Emacs-22 it fails: The assignment does not
seem work, so "foo + 1 =>" evaluates to "foo + 1 => foo + 1".

This brakes calc-embedded for most users.

In GNU Emacs 22.0.50.1 (powerpc-apple-darwin7.8.0)
 of 2005-02-17 on REASON.MIT.EDU
Distributor `Apple Computers', version 10.3.8
configured using `configure '--without-x' '--prefix=/usr/local''

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.ISO8859-1
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Major mode: LaTeX

Minor modes in effect:
  reftex-mode: t
  desktop-save-mode: t
  recentf-mode: t
  show-paren-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  flyspell-mode: t

Recent input:

Recent messages:
Buffer is read-only: #<buffer chapter-single-exp.tex> [2 times]
Back to LaTeX mode
Undo!
Embedded Calc mode enabled; Give this command again to return to normal
Quit
byte-code: Buffer is read-only: #<buffer chapter-single-exp.tex>
Buffer is read-only: #<buffer chapter-single-exp.tex>
Back to LaTeX mode
Undo!
Loading emacsbug...done