Re: Non-descriptive error-message

[Richard Stallman]

    The problem is that in lisp-mode.el:465 read is trying to read from
    narrowed-region which does not contain an expression:

          (setq expr (read (current-buffer)))

    How do I properly catch an error here and report it to user in the same way
    read signals "End of file during parsing" error?

You can use `condition-case' around the call to `read':

    (condition-case error-data
        (read)
      (error ...))

See the Emacs Lisp Manual for details.  Note that there is currently
no way to distinguish end of file from other read errors except to
look at error-data.  Maybe it is better to check explicitly for the
just-whitespace case before calling read.