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Regex cheat-sheet:
| Token | Description |
|---|
| . | any single character |
| \d | any number |
| \h | any horizontal white-space (space, tab, etc.) |
| Token | Description |
|---|
| ? | one or zero times |
| * | any number of times (even zero - zero or more times) |
| + | at least once (one or more times) |
| Token | Description |
|---|
| [abc] | any of the characters inside ('a' or 'b' or 'c') |
| [a-z] | any of the characters inside the range (a through z) |
| | | or |
| () | group - for example '(foo|bar)' - 'foo' or 'bar' |