[patch] make man page of addnstr() say that n = number of bytes

[Benno Schulenberg]

Hello,

Reading the man page of waddnstr() yesterday, I noticed that it says:
"The four functions with n as the last argument write at most n characters".

However, this is not right.  When the string is a single multibyte character
that consists of three bytes, then specifying 1 or 2 for n means that nothing
gets written to the screen.  Only when specifying 3 for n does the three-byte
character get "printed".

Attached patch fixes this in the manual page.  But maybe the manual should
also say that when not all bytes of a multibyte character are covered by the
n, that then nothing is written, zero bytes?  As that is what seems to happen.

Benno

addnstr-writes-bytes-not-characters.patch
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