| Rg | Vim | |
|---|---|---|
| zero or more | ? |
\? |
| 1 or more | + |
\+ |
| precise number of matches | {n,m} |
\{n,m} |
| word boundary | \b |
\< \> |
| multiple patterns or | | |
\| |
| non greedy | .*? |
.\{-} |
| line starts with | ^ |
^ |
| line ends with | $ |
$ |
| group | ( ) |
\( \) |
| back reference | not supported | \1 \2 \3 |
Example: to match company and companies
compan\(y\|ies\)compan(y|ies)