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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# Autoconf support for the Vala compiler
# Copyright (C) 2008-2018 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# Check whether the Vala compiler exists in $PATH. If it is found, the
# variable VALAC is set pointing to its absolute path. Otherwise, it is
# simply set to 'valac'.
# Optionally a minimum release number of the compiler can be requested.
# If the ACTION-IF-FOUND parameter is given, it will be run if a proper
# Vala compiler is found.
# Similarly, if the ACTION-IF-FOUND is given, it will be run if no proper
# Vala compiler is found. It defaults to simply print a warning about the
# situation, but otherwise proceeding with the configuration.
#
# AM_PROG_VALAC([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# --------------------------------------------------------------------------
AC_DEFUN([AM_PROG_VALAC],
[AC_PATH_PROG([VALAC], [valac], [valac])
AS_IF([test "$VALAC" != valac && test -n "$1"],
[AC_MSG_CHECKING([whether $VALAC is at least version $1])
am__vala_version=`$VALAC --version | sed 's/Vala *//'`
AS_VERSION_COMPARE([$1], ["$am__vala_version"],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
VALAC=valac])])
if test "$VALAC" = valac; then
m4_default([$3],
[AC_MSG_WARN([no proper vala compiler found])
AC_MSG_WARN([you will not be able to compile vala source files])])
else
m4_default([$2], [:])
fi])