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WWW::Mechanize doesn't always follow_link(text
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WWW::Mechanize doesn't always follow_link(text M.O.B. i L. 04-20-2008
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Posted by John Bokma on April 28, 2008, 12:30 am
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> John Bokma wrote:
>>
>>> John Bokma wrote:
>>
>> [..]
>>
>>>> HTML::TreeBuilder, or a module it's using, returns   as a
>>>> single character, it might be that you have to
>>>> use the code instead.
>>>>
>>>> Comment on
>>>> http://johnbokma.com/perl/search-term-suggestion-tool.html says:
>>>> ( , stored as char 225)
>>>>
>>>> So you might want to try: "Edit\xe1Librarians".
>>>>
>>>> Wild guess.
>>>>
>>> Thanks! But it should be \xa0.
>>
>> Yeah, but HTML::TreeBuilder returns it as 225 :-D.
>
> He's after a ' ',

Yes, I am aware of that. And somehow HTML::TreeBuilder or a module it uses
returns   as \xe1.

--
John

http://johnbokma.com/perl/

Posted by szr on April 28, 2008, 1:28 am
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 John Bokma wrote:
>
>> John Bokma wrote:
>>>
>>>> John Bokma wrote:
>>>
>>> [..]
>>>
>>>>> HTML::TreeBuilder, or a module it's using, returns   as a
>>>>> single character, it might be that you have to
>>>>> use the code instead.
>>>>>
>>>>> Comment on
>>>>> http://johnbokma.com/perl/search-term-suggestion-tool.html says:
>>>>> ( , stored as char 225)
>>>>>
>>>>> So you might want to try: "Edit\xe1Librarians".
>>>>>
>>>>> Wild guess.
>>>>>
>>>> Thanks! But it should be \xa0.
>>>
>>> Yeah, but HTML::TreeBuilder returns it as 225 :-D.
>>
>> He's after a ' ',
>
> Yes, I am aware of that. And somehow HTML::TreeBuilder or a module it
> uses returns   as \xe1.

Yes. The question whether this is a bug in HTML::TreeBuilder or is there
a logical reason for this? DEC 225 doesn't seem to be a space of any
kind in any ascii list I've checked, but I don't doubt I've missed one
somewhere :-)

--
szr



Posted by M.O.B. i L. on April 24, 2008, 1:17 pm
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M.O.B. i L. wrote:
> Thanks! But it should be \xa0. First I tried matching with regular
> expressions and that worked using . (dot) for the unknown character. I
> then found this page about  
> <http://www.w3.org/International/questions/qa-escapes> where it says:
> "An example of an ambiguous character is 00A0: NO-BREAK SPACE. This type
> of space prevents line breaking, but it looks just like any other space
> when used as a character. Using &nbsp; (or &#xA0;) makes it quite clear
> where such spaces appear in the text.".
>
> So this works:
> $agent->follow_link(text => "Edit\xa0Librarians", n => 1);

I add that I have developed these command lines to convert back and forth:
sed -i '/&nbsp;/s/&nbsp;/\xa0/g;/\xa0/s/'\''/"/g' MKBTest.pl
sed -i '/\xa0/s/\xa0/\&nbsp;/g;/&nbsp;/s/"/'\''/g' MKBTest.pl

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