Regular Expression to select everything before and up to a particular text

Question

I am trying to use a regular expression to find a part of a string and select everything up to that string   So for example if my string is this is just some test txt some other  I want to search for  txt and when I find it select everything before and up to  txt

User · Answer

n    0 3       W   txt   This will select all the content before the particular word   txt  including any context in different lines up to 3 lines

User · Answer

You could just do             txt   tested here

User · Answer

After executing the below regex  your answer is in the first capture            txt

User · Answer

Up to and including txt you would need to change your regex like so           txt

User · Answer

This matches everything up to   txt   without including it             txt

[regex] Regular Expression to select everything before and up to a particular text

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