Rubyxp - Ruby regular expression tester
Now running on ruby 1.9.2 and the new Oniguruma engine!
Welcome to rubyxp.com, a free service where you can test your ruby regular expressions on your web browser against ruby 1.9.2 and see the result. Please take note that this currenty is a beta service and I plan to add more features/support in the near future. Many thanks to seattle.rb who provided the initial development place for this app. If you have questions, you can contact me at info [at] this domain. You can also browse the source code at github.
regex characters:
- .
- any character except newline
- [ ]
- any single character of set
- [^ ]
- any single character NOT of set
- *
- 0 or more previous regular expression
- *?
- 0 or more previous regular expression (non-greedy)
- +
- 1 or more previous regular expression
- +?
- 1 or more previous regular expression (non-greedy)
- ?
- 0 or 1 previous regular expression
- |
- alternation
- ( )
- grouping regular expressions
- ^
- beginning of a line or string
- $
- end of a line or string
- {m,n}
- at least m but most n previous regular expression
- {m,n}?
- at least m but most n previous regular expression (non-greedy)
- \1-9
- nth previous captured group
- \&
- whole match
- \`
- pre-match
- \'
- post-match
- \+
- highest group matched
- \A
- beginning of a string
- \b
- backspace(0x08)(inside[]only)
- \b
- word boundary(outside[]only)
- \B
- non-word boundary
- \d
- digit, same as[0-9]
- \D
- non-digit
- \S
- non-whitespace character
- \s
- whitespace character[ \t\n\r\f]
- \W
- non-word character
- \w
- word character[0-9A-Za-z_]
- \z
- end of a string
- \Z
- end of a string, or before newline at the end
- (?#)
- comment
- (?:)
- grouping without backreferences
- (?=)
- zero-width positive look-ahead assertion
- (?!)
- zero-width negative look-ahead assertion
- (?>)
- nested anchored sub-regexp. stops backtracking.
- (?imx-imx)
- turns on/off imx options for rest of regexp.
- (?imx-imx:re)
- turns on/off imx options, localized in group.
- [:alnum:]
- alpha-numeric characters
- [:alpha:]
- alphabetic characters
- [:blank:]
- whitespace - does not include tabs, carriage returns, etc
- [:cntrl:]
- control characters
- [:digit:]
- decimal digits
- [:graph:]
- graph characters
- [:lower:]
- lower case characters
- [:print:]
- printable characters
- [:punct:]
- punctuation characters
- [:space:]
- whitespace, including tabs, carriage returns, etc
- [:upper:]
- upper case characters
- [:xdigit:]
- hexadecimal digits
- /i
- case insensitive
- /o
- only interpolate #{} blocks once
- /m
- multiline mode - '.' will match newline
- /x
- extended mode - whitespace is ignored
- /[neus]
- encoding: none, EUC, UTF-8, SJIS, respectively