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标题:
关于RLENGTH
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作者:
menulst
时间:
2012-10-11 23:28
标题:
关于RLENGTH
[root@localhost awk]# echo "aAAAaBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
[root@localhost awk]# echo "aAAAbBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 8 0
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RLENGTH的值为什么会发生变化?请高手指点下.
作者:
menulst
时间:
2012-10-11 23:30
awk版本:
[root@localhost awk]# awk --version
GNU Awk 3.1.7
Copyright (C) 1989, 1991-2009 Free Software Foundation.
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作者:
yinyuemi
时间:
2012-10-11 23:44
回复
1#
menulst
看看这样是不是结果就一样了,和awk应该没关系
Lang=C; echo "aAAAaBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
Lang=C; echo "aAAAbBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
作者:
menulst
时间:
2012-10-12 00:21
回复
3#
yinyuemi
[root@localhost awk]# Lang=C; echo "aAAAaBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
[root@localhost awk]# Lang=C; echo "aAAAbBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 8 0
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貌似结果一样啊
作者:
seesea2517
时间:
2012-10-12 09:35
LANG 大写。
[seesea@UC ~]$ echo "aAAAaBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
[seesea@UC ~]$ echo "aAAAbBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 8 0
[seesea@UC ~]$ echo $LANG
zh_CN
[seesea@UC ~]$ LANG=C; echo "aAAAbBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
[seesea@UC ~]$ LANG=C; echo "aAAAaBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
[seesea@UC ~]$ echo $LANG
C
[seesea@UC ~]$ echo "aAAAaBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
[seesea@UC ~]$ echo "aAAAbBBBB" | awk '{len=match($0, /[A-Z]+/); print len, RSTART, RLENGTH, IGNORECASE}'
2 2 3 0
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作者:
L_kernel
时间:
2012-10-12 10:02
这个怎么解释?疑惑~~
作者:
menulst
时间:
2012-10-12 11:33
seesea2517 发表于 2012-10-12 09:35
LANG 大写。
的确是这样,这个怎么解释呢?能不能讲下? 是和正则的Unicode有关?
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