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Re: main: fix error message for missing argument

From: Paul Eggert
Subject: Re: main: fix error message for missing argument
Date: Sun, 7 Oct 2018 14:40:06 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

Akim Demaille wrote:

I confess I’m confused with the way program_name works: sometimes
it’s complete, sometimes it’s the only basename (because getprogname
and program_name are not the same).  So our error messages are

I confess I've forgotten how all that stuff works, or supposed to.

‘Operand’ sounds a bit weird.  I’d rather use ‘argument’.

The 'operand' terminology is taken from POSIX <>. An operand is an argument that is neither an option nor an option-argument.

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