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bug#30697: make eval-expression only take `read'-able Lisp
From: |
Eli Zaretskii |
Subject: |
bug#30697: make eval-expression only take `read'-able Lisp |
Date: |
Sun, 04 Mar 2018 19:10:55 +0200 |
> Date: Sun, 04 Mar 2018 17:46:18 +0100
> From: charles@aurox.ch (Charles A. Roelli)
>
> Here is a change to make eval-expression issue a warning in the
> minibuffer when the user enters an unreadable expression. Currently,
> we just error out, so the user has to restart the command and go back
> in the history to get back what he typed.
>
> With the change applied, if you type
>
> M-: ( RET
>
> from emacs -q, you'll see,
>
> Eval: ( [End of file during parsing]
>
> which gives you a chance to fix the error right away.
>
> As another example, if you type an extra paren, as in
>
> M-: ( ) ) RET
>
> you'll see,
>
> Eval: ()) [Trailing garbage following expression]
>
> and point is left at the extra paren.
You are changing the behavior of read--expression, which has a few
callers in Emacs. Did you verify that those callers won't break due
to this change?
This should also have a NEWS entry, and perhaps the manual needs some
changes, please take a look.
Thanks.