[nvi-iconv]Call for test

[Zhihao Yuan]

Hi,

I uploaded a new version, 2.0.2.

http://students.cs.niu.edu/~z1565938/distfiles/nvi2-freebsd-2011-12-07.diff.gz

Same as before, you need to remove usr.bin/vi/port.h after you applied
this patch.

In this version, I analyzed all of the PRs, patches/commits of
Debian's nvi package and NetBSD's nvi-1.81.6b5 in base. Many bug fixes
are merged. And 2 main features are gained:

1. Recognized non-ASCII letters' upper/lower cases (~);
2. Recognized non-ASCII word boundary (w, ^A, regex, etc.).

Btw, vim don't have such features.

I also solved all memory leak in all know tests. iconv_open(3) usage
part is rewrote.

2 changes from NetBSD are not merged:

1. To use signed char instead of unsigned char in 8-bit mode. This
requires to cast all character to at least unsigned char when passing
them to ctype(3). Test cases are required to convince me on this part;
2. 32-bit clean regex. According to the PRs and commit log, I don't
have enough confidence in NetBSD's code here. Although the current
regex in use is only 24-bit clean, but it works correctly and, my
final solution is to use TRE in base directly.

Comments and test reports are welcome.

-- 
Zhihao Yuan, nickname lichray
The best way to predict the future is to invent it.
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4BSD -- http://4bsd.biz/