Regular Expression
Difference (previous author)
(Change, Edit, normal page display)
Changed: 3c3,22
This should be considered an implementation detail that can change, although no change is planned in the near future.
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[[table][separator=||]
special commands || meaning || matches || doesn't match
. || any character || almost everything || end of line "\n"
A* || zero, one or more A || "", "A" or "AAAA" || "B", almost everything else
.* || something in between || "asghas" || matches everything
A.*B || A and B and something in between || "Alligator Berni" or "AB" || "AC"
x+ || one or more "x" || "x", "xx" or "xxxx" || "" or "alpha"
\d || a digit || "1" or "6" || "xyz"
\s || whitespace || " " or "\t" || "abc"
[ABD] || one of the characters between brackets || "A", "B" or "D" || "C"
[a-z]+ || one or more lower case characters || "alpha" or "butter" || "ALPHA"
(alpha|beta|gamma) || one of the words "alpha", "beta" or "gamma" || "alpha" || "berta"
^ || beginning of line
^A || || a line starting with "A" || a line starting with any other character
$ || end of line
)$ || || right parenthesis at the end of line || any other character at the end of line
^.{10}$ || || a line exactly 10 characters long || any other line length
]
RegularExpressions can become arbitrarily complex. There are tutorials and books on this topic. This is just to give you a taste of it.
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RegularExpressions are a special kind of text search commands. They are used in many places in ProWiki and - because ProWiki is written in Perl - the RegularExpressions are used in the Perl flavour.
 | | special commands | meaning | matches | doesn't match |
| . | any character | almost everything | end of line "\n" |
| A* | zero, one or more A | "", "A" or "AAAA" | "B", almost everything else |
| .* | something in between | "asghas" | matches everything |
| A.*B | A and B and something in between | "Alligator Berni" or "AB" | "AC" |
| x+ | one or more "x" | "x", "xx" or "xxxx" | "" or "alpha" |
| \d | a digit | "1" or "6" | "xyz" |
| \s | whitespace | " " or "\t" | "abc" |
| [ABD] | one of the characters between brackets | "A", "B" or "D" | "C" |
| [a-z]+ | one or more lower case characters | "alpha" or "butter" | "ALPHA" |
| (alpha|beta|gamma) | one of the words "alpha", "beta" or "gamma" | "alpha" | "berta" |
| ^ | beginning of line | | |
| ^A | | a line starting with "A" | a line starting with any other character |
| $ | end of line | | |
| )$ | | right parenthesis at the end of line | any other character at the end of line |
| ^.{10}$ | | a line exactly 10 characters long | any other line length |
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RegularExpressions can become arbitrarily complex. There are tutorials and books on this topic. This is just to give you a taste of it.
FolderGlossary
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