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600.Text file parser -- How to extract all words that has any letter doubled in a text file?

User: editor -- 2010-08-28          << 599  601 >>
Hits: 1799
Type: Text file parser   
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Description:
How to extract all words that has any letter doubled in a text file?
In examples below, "Pioneer" has double "e", and differences has double "f"
Input Sample:
Replace
Pioneer
is
making
differences
You
can
replace
Output Sample:
Pioneer
differences
Answer:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open source text file
2. ctrl-h open replace window
* set 'replace unit' to 'word'
* in 'search for pattern', enter:

* in 'replace with pattern', enter:

* uncheck option of "print unmatched unit"
3. click 'Replace', done.

Screenshot 1:  Replace_Window


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