How do i put separator after each 5 string in 20 random strings?

Solution 1:

  • Ctrl+H
  • Find what: .{5}\K(?!$)
  • Replace with: -
  • CHECK Wrap around
  • CHECK Regular expression
  • UNCHECK . matches newline
  • Replace all

Explanation:

.{5}        # 5 any character but newline
\K          # forget all we have seen until this position
(?!$)       # negative lookahead, make we haven't end of line after

Screenshot (before):

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Screenshot (after):

enter image description here