Re: let vs. buffer local bindings

[Andreas Schwab <schwab@suse.de>]

storm@cua.dk (Kim F. Storm) writes:

|> Gareth Owen <usenet@gwowen.freeserve.co.uk> has found a peculiar
|> interference between let and buffer local bindings.

*Note Introduction to Buffer-Local Variables: (elisp)Intro to
 Buffer-Local.

       *Warning:* When a variable has buffer-local values in one or more
    buffers, you can get Emacs very confused by binding the variable with
    `let', changing to a different current buffer in which a different
    binding is in effect, and then exiting the `let'.  This can scramble
    the values of the buffer-local and default bindings.

       To preserve your sanity, avoid using a variable in that way.  If you
    use `save-excursion' around each piece of code that changes to a
    different current buffer, you will not have this problem (*note
    Excursions::).

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
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