more handing of :e is not compliant

According to the spec:

Examine a new file. If the filename argument is not specified, the current file (see the :n and :p commands below) shall be re-examined. The filename shall be subjected to the process of shell word expansions (see wordexp); if more than a single pathname results, the effects are unspecified. If filename is a <number-sign> ( '#' ), the previously examined file shall be re-examined. If filename is not accessible for any reason (including that it is a non-seekable file), an error message to this effect shall be displayed and the current file and screen shall not change.

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