晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //usr/share/doc/gawk/README.multibyte
Fri Jun  3 12:20:17 IDT 2005
============================

As noted in the NEWS file, as of 3.1.5, gawk uses character values instead
of byte values for `index', `length', `substr' and `match'.  This works
in multibyte and unicode locales.

Wed Jun 18 16:47:31 IDT 2003
============================

Multibyte locales can cause occasional weirdness, in particular with
ranges inside brackets: /[....]/.  Something that works great for ASCII
will choke for, e.g., en_US.UTF-8.  One such program is test/gsubtst5.awk.

By default, the test suite runs with LC_ALL=C and LANG=C. You
can change this by doing (from a Bourne-style shell):

	$ GAWKLOCALE=some_locale make check

Then the test suite will set LC_ALL and LANG to the given locale.

As of this writing, this works for en_US.UTF-8, and all tests
pass except gsubtst5.

For the normal case of RS = "\n", the locale is largely irrelevant.
For other single byte record separators, using LC_ALL=C will give you
much better performance when reading records.  Otherwise, gawk has to
make several function calls, *per input character* to find the record
terminator.  You have been warned.

haha - 2025