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Fix line endings

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Marcello Lamonaca 2021-04-02 10:16:04 +02:00
parent 17bf5fe2de
commit ba32234ba9
1 changed files with 8 additions and 8 deletions
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RegularExpressions.md
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@ -19,7 +19,7 @@
`+` one or more repetitions `+` one or more repetitions
`*` zero or more repetitions `*` zero or more repetitions
`?` zero or one repetition `?` zero or one repetition
`{m}` exactly *m* times `{m}` exactly *m* times
`{m, n}` at least *m* times, at most *n* times `{m, n}` at least *m* times, at most *n* times
The `*`, `x`, and `?` qualifiers are all greedy; they match as much text as possible The `*`, `x`, and `?` qualifiers are all greedy; they match as much text as possible
@ -27,7 +27,7 @@ Adding `?` *after* the qualifier makes it perform the match in non-greedy or min
## Special Characters ## Special Characters
`\a, \b, \f, \n, \r, \t, \u, \U, \v, \x, \\, \?, \*, \+ , \., \^, \$` special characters `\a, \b, \f, \n, \r, \t, \u, \U, \v, \x, \\, \?, \*, \+ , \., \^, \$` special characters
`\(`, `\)`, `\[`, `\]` brackets escaping `\(`, `\)`, `\[`, `\]` brackets escaping
## Delimiters ## Delimiters
@ -42,24 +42,24 @@ Adding `?` *after* the qualifier makes it perform the match in non-greedy or min
`[__]{m , n}` consecutive characters in the class (`[aeiou]{2}` --> ae, ao, ...) `[__]{m , n}` consecutive characters in the class (`[aeiou]{2}` --> ae, ao, ...)
`[a-z]` sequence of lowercase characters `[a-z]` sequence of lowercase characters
`[A-Z]` sequence of uppercase characters `[A-Z]` sequence of uppercase characters
`[a-zA-Z]` sequence of lowercase or uppercase characters `[a-zA-Z]` sequence of lowercase or uppercase characters
`[a-z][A-Z]` sequence of lowercase characters followed by sequence of uppercase charaters `[a-z][A-Z]` sequence of lowercase characters followed by sequence of uppercase charaters
`[^__]` anything but the elements of the class (include `\n` to avoid matching line endings) `[^__]` anything but the elements of the class (include `\n` to avoid matching line endings)
`^`, `\`, `-` and `]` must be escaped to be used in clases: `[ \]\[\^\- ]` `^`, `\`, `-` and `]` must be escaped to be used in clases: `[ \]\[\^\- ]`
## Groups ## Groups
`(__)` REGEX subgroup `(__)` REGEX subgroup
`(REGEX_1 | REGEX_2)` match in multiple regex (R1 OR R2) `(REGEX_1 | REGEX_2)` match in multiple regex (R1 OR R2)
`(?=__)` match only if `__` is next substring `(?=__)` match only if `__` is next substring
`(?!__)` match only if `__` is not next substring `(?!__)` match only if `__` is not next substring
`(?<=__)` match only if `__` is previous substring `(?<=__)` match only if `__` is previous substring
`(?<!__)` match only if `__` is not previous substring `(?<!__)` match only if `__` is not previous substring
`\<number>` refers to n-th group `\<number>` refers to n-th group
## Special Cases ## Special Cases
`(.*)` match anything `(.*)` match anything
`(.*?)` match anything, non-greedy match `(.*?)` match anything, non-greedy match