Regex tester
Pattern
Input
This is a message {key1} {{key2}} {{{key3}}}, and includes {key4}.
Options
Replacement
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4 matches found in about 4 milliseconds.
IndexPositionMatched String$1
018{key1}key1
125{{key2}}{key2}
234{{{key3}}}{{key3}}
359{key4}key4
This is a message {key1} {{key2}} {{{key3}}}, and includes {key4}.
  1. This is a message
  2. key1
  3. whitespace
  4. {key2}
  5. whitespace
  6. {{key3}}
  7. , and includes
  8. key4
  9. .