Re: [Bug-ed] ed -p flag

[John Cowan]

Antonio Diaz Diaz scripsit:

> Richard Hum wrote:
>> For some reason, the -p flag for ed requires a non-empty arguement. Is
>> this really necessary?
>
> Of course it isn't really necessary, but it is documented[1][2][3] this  
> way and so I have maintained it this way.

Your references merely require that -p take an argument: they do not
require the argument to be non-empty.  So whereas the command

$ ed -p

fails and should fail, the command

$ ed -p ''

should not fail, but it does, at least in ed 1.5.

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