How do I combined each 2 lines with a :
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 So I have alot of lines that look like this 
 a999999a
 Matt48947
 b999999b
 unicornlove101010
 smile123
 Mattp1
 p1looser
 raventehpandaAnd want to turn it to something like this 
 a999999a:Matt48947
 b999999b:unicornlove101010
 smile123:Mattp1
 p1looser:raventehpandaHow do I go about that? Also how do I delete duplicate lines without textfx? because I can’t download it / install it. 
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 Hello, @fouad-tbz, and All, Your first task is very easy to achieve : - 
If you have to do this S/R, in a particular area of tour text, do a normal selection, first 
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Open the Replace dialog ( Ctrl + H)
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If a previous selections exist, turn on the In selectionoption
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Else, just ticked the Wrap aroundoption
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Select the Regular expressionsearch mode
 SEARCH (?-s)(^.+)\R(.+)REPLACE \1:\2Click on the Replace AllbuttonEt voilà ! 
 Regarding deleting duplicate lines, two solutions are possible : - If you don’t mind sorting your text, first, ( Edit > Line Operations > Sort Lines Lexicographically Ascending ) use the following regex S/R :
 SEARCH (?-s)(^.+\R)\1+REPLACE \1which will delete all duplicate consecutive lines of your sorted list - Now, if you prefer to preserve the present order of your list, use the regex S/R, below :
 SEARCH ^(?-s)(^.+\R)(?s)(?=.*\R\1)REPLACE Leave EMPTYwhich will delete all duplicate lines, keeping, only, the last duplicate lines ! 
 Notes : - 
In all regexes, the (?-s)modifier, means that thedotspecial character matches any single standard character, only
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In the third regex, the (?s)syntax means that, afterwards, the.can match, absolutely, any single character, even EOL ones
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In the first regex, the (^.+)and(.+)part stand for a complete line, from column 1, without its EOL characters
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In the last two regeges, the (^.+\R)part matches a complete line, from column 1, with its EOL characters
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All areas between parentheses define a group, numbered 1,2and so on…, which can be re-used, either, in the search or replacement part, with the syntax\1,\2and so on…
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The +quantifier ( or{1,}) represents any non-null repetition of the previous character or group
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The *quantifier ( or{0,}) represents any repetition, ( even none ) of the previous character or group
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Finally, the \Rsyntax matches any king of EOL characters( line-break ), whatever the file ( Windows, Unix or Mac )
 Best Regards, guy038 P.S. : For further information about regular expressions, refer to the link below : https://notepad-plus-plus.org/community/topic/15765/faq-desk-where-to-find-regex-documentation/1 
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 @Fouad-tbz You can also use Macro for this. First, place the caret on the first line, in front of the first word. Start the macro recording and type the following keys: - End
- :
- Delete
- Down arrow
- Home
 Stop the recording. Play the macro (1 time or repeat). 

