阁下也还是elsif啊,我的问题是,既然只有两种可能,那么不应该需要elsif，匹配到第一条分支，否则进入第二条，不应该有第三种可能，
gtalk:freeespeech@gmail.com2009/3/5 <china-pm-request@pm.org>:
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> 1. Re: China-pm Digest, Vol 43, Issue 23 (cnhack TNT)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 4 Mar 2009 11:10:25 +0800
> From: cnhack TNT <cnhacktnt@gmail.com>
> Subject: Re: [PerlChina] China-pm Digest, Vol 43, Issue 23
> To: china-pm@pm.org
> Message-ID:
> <f6f3441f0903031910r7ea79d9o68ac93fef9ff4e91@mail.gmail.com>
> Content-Type: text/plain; charset="gb2312"
>
> 用 else 的话， 你得把 /^\s+(.*)$/ 放在 else 块中，再做处理：
> 我是这样处理的:
> -------------------------------------------------
> #!/usr/bin/perl;
> use strict;
>
> my ($name, $title) = ();
>
> while(<DATA>){
>
> if (/^(\d+)\s+(.*)$/){
>
> print "====\n$name\t$title\n=====\n" if $name;
> $name = $1;
> $title = $2;
> next;
>
> } elsif (/^\s+(.*)$/) {
>
> $title.= $1;
> }
>
> print "====\n$name\t$title\n=====\n" if eof;
>
> }
>
>
> __DATA__
> 2222 eewweasdds,asdasd.sadsadasdas
> ddasdddddddddddddddddddda
> ddddddddddddddddddddddddddd
> 2821 easdddddddddddddddddddddddd
> 2192 288888888888888888888ass0a-das.
> as;dddsaddaa0---------22222222
> 3030 123456
> 789
>
> #-----------------END-----------------
>
> 2009/3/3 owen nirvana <freeespeech@gmail.com>
>
>> > my ($name, $title);
>> > while (<>){
>> > if (/^(\d+)\s+(.*)$) {
>> > if ($name) {
>> > // 保存上一个 save $name, $title
>> > // 下面开始处理一个新的
>> > $name = '';
>> > $title = '';
>> > }
>> > $name = $1;
>> > $title .= $2;
>> > } elsif(/^\s+(.*)$/) {
>> > $title .= $1;
>> > }
>> > // save last one
>>
>> 把自己的老问题翻上来，今天突然发现如果不是elsif, 而是else, 就只有匹配行的第二行会被合并,下一行就不会, why
>> gtalk:freeespeech@gmail.com <gtalk%3Afreeespeech@gmail.com>
>>
>>
>>
>> 2008/11/18 <china-pm-request@pm.org>:
>> > Send China-pm mailing list submissions to
>> > china-pm@pm.org
>> >
>> > To subscribe or unsubscribe via the World Wide Web, visit
>> > http://mail.pm.org/mailman/listinfo/china-pm
>> > or, via email, send a message with subject or body 'help' to
>> > china-pm-request@pm.org
>> >
>> > You can reach the person managing the list at
>> > china-pm-owner@pm.org
>> >
>> > When replying, please edit your Subject line so it is more specific
>> > than "Re: Contents of China-pm digest..."
>> >
>> >
>> > Today's Topics:
>> >
>> > 1. Re: China-pm Digest, Vol 43, Issue 21 (truncatei)
>> >
>> >
>> > ----------------------------------------------------------------------
>> >
>> > Message: 1
>> > Date: Mon, 17 Nov 2008 22:01:40 +0800
>> > From: truncatei <truncatei@gmail.com>
>> > Subject: Re: [PerlChina] China-pm Digest, Vol 43, Issue 21
>> > To: china-pm@pm.org
>> > Message-ID:
>> > <c0d775f40811170601m6c2437aeyc2a3c19e7fe0a82e@mail.gmail.com>
>> > Content-Type: text/plain; charset="utf-8"
>> >
>> > 2008/11/17 owen nirvana <freeespeech@gmail.com>
>> >
>> >> 谢谢，问题是归到上一行这样的操作，我不知道如何用正则表达式完成，那不等于是让表达式再回溯吗
>> >> gtalk:freeespeech@gmail.com <gtalk%3Afreeespeech@gmail.com> <
>> gtalk%3Afreeespeech@gmail.com <gtalk%253Afreeespeech@gmail.com>>
>> >>
>> >>
>> >> >>
>> >> >>
>> >> >> 还有一个问题，是关于提取数据的
>> >> >>
>> >> >> 2222 eewweasdds,asdasd.sadsadasdas
>> >> >> ddasdddddddddddddddddddda
>> >> >> ddddddddddddddddddddddddddd
>> >> >> 2821 easdddddddddddddddddddddddd
>> >> >> 2192 288888888888888888888ass0a-das.
>> >> >> as;dddsaddaa0---------22222222
>> >> >>
>> >> >> 诸如此类，左边很好办，可是右边并不限于单行，我该如何把这样的数据提取为 name title的格式存到数据表里呢
>> >>
>> >> <http://mail.pm.org/mailman/listinfo/china-pm>
>> >
>> >
>> >
>> > my ($name, $title);
>> > while (<>){
>> > if (/^(\d+)\s+(.*)$) {
>> > if ($name) {
>> > // 保存上一个 save $name, $title
>> > // 下面开始处理一个新的
>> > $name = '';
>> > $title = '';
>> > }
>> > $name = $1;
>> > $title .= $2;
>> > } elsif(/^\s+(.*)$/) {
>> > $title .= $1;
>> > }
>> > // save last one
>> >
>> > 好久不写了，上面的代码或许会有些错误，大概的流程整理出来了：
>> > 每次遇到数字就开始一条数据，否则视为向当前数据中添加title
>> >
>> >
>> > --
>> >
>> "老是呆在那里不好，我们随生活需要四处迁徙，多年以来的梦想，至今还未实现，压力堵塞了我们的耳朵，工作生涯到了尽头，还是一无所有，我们应该给后人留下点儿什么，教训是不会刻在纪念碑上的，光荣的命令和指引之手，也可请求，简单地改变一下角度就足够了"
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>> >
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>> > End of China-pm Digest, Vol 43, Issue 23
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