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871.Text file parser -- How to extract all characters within specified char set from a text file?

User: editor -- 2011-10-11          << 870  872 >>
Hits: 2535
Type: Text file parser   
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How to extract all characters within specified char set from a text file? For example, how to extract all Chinese characters(from 0x4e00-0x9fa5) and newline(0x0a) characters?
Input Sample:
»ΆΣ­ welcome 
welcome »ΆΣ­
Output Sample:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open text file 
2. ctrl-h open 'replace' dialog 
* set 'search for pattern' to: 
* set 'replace with pattern' to: 
* set 'if' to: 
* uncheck "print unmatched units" option. 
3. click 'Replace', done.

Screenshot 1:  Replace_Window

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