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bug#6893: evaluating `'#'(lambda (b) b)8 ; => 8 with `eval-last-sexp' "C

From: Stefan Monnier
Subject: bug#6893: evaluating `'#'(lambda (b) b)8 ; => 8 with `eval-last-sexp' "C-x C-e" in `emacs-lisp-mode'
Date: Sun, 22 Aug 2010 00:40:17 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)

> Interactive invocation of `eval-last-sexp' (e.g. "C-x C-e" ) in
> Emacs-lisp mode buffer for this form:

>  `'#'(lambda (b) b)8
>  ;=> 8

C-x C-e doesn't evaluate "the expression on the line" but "the last sexp
before point".
The "last-sexp" is just "8" (try C-M-b to see what it is), so whatever
other sexp you put before won't make any difference.


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