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378.Regular expression replace -- How to remove all lines that contains more than one word?

User: editor -- 2009-12-30          << 377  379 >>
Hits: 4043
Type: Regular expression replace   
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Description:
How to remove all lines that contains more than one word? 
I want to remove all phrases that listed in a text word list, and keep the single word.
Input Sample:
hello 
hello world 
welcome 
no problem 
bye
Output Sample:
hello 
welcome 
bye
Answer:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open source text file that containing words. 
2. ctrl-h open 'Replace' dialog: 
* set 'Replace Unit' to 'Line' 
* in search for pattern enter: 
 
3. click 'Replace', all lines that has 2 words at least(matches \w+\s+\w+) will be removed. 
4. ctrl-s save to target file
Download Script:  scripts/378.rst.zip

Screenshot 1:  Replace_Window


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