User Tools
Regular_Expressions
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Last revision Both sides next revision | ||
|
Regular_Expressions [2021/04/08 00:16] peternlewis [Capture Groups] |
Regular_Expressions [2021/10/19 22:34] peternlewis |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | {{:regex-icon.png?nolink |}} | ||
| ====== Regular Expressions (RegEx) ====== | ====== Regular Expressions (RegEx) ====== | ||
| - | + | Keyboard Maestro uses [[https://www.keyboardmaestro.com/action/linkthru?regularexpressionreferenceoverview|ICU Regular Expressions]] (aka RegEx or RegExp) which is very similar to PCRE (Perl Compatible Regular Expressions), and you can read their [documentation](https://www.keyboardmaestro.com/action/linkthru?regularexpressionreference) by choosing ICU Regular Expression Reference from the Help menu in Keyboard Maestro. | |
| - | Keyboard Maestro uses [[http://userguide.icu-project.org/strings/regexp|ICU Regular Expressions]] (aka RegEx or RegExp) which is very similar to PCRE (Perl Compatible Regular Expressions), and you can read their [documentation](http://userguide.icu-project.org/strings/regexp#TOC-Regular-Expression-Metacharacters) by choosing ICU Regular Expression Reference from the Help menu in Keyboard Maestro. | + | |
| Line 19: | Line 17: | ||
| ===== Search Modifiers ===== | ===== Search Modifiers ===== | ||
| - | The ICU calls these modifiers "[[http://userguide.icu-project.org/strings/regexp#TOC-Flag-Options|flag options]]". | + | The ICU calls these modifiers "[[https://www.keyboardmaestro.com/action/linkthru?regularexpressionreferenceflags|flag options]]". |
| The search modifier "Pattern to Use" shown below is placed at the very beginning of the Search/Find Regular Expression box.\\ | The search modifier "Pattern to Use" shown below is placed at the very beginning of the Search/Find Regular Expression box.\\ | ||
| Line 56: | Line 54: | ||
| ===== ICU 55+ Metacharacters ===== | ===== ICU 55+ Metacharacters ===== | ||
| - | For the currently complete list, see [ICU Regular Expression Metacharacters](http://userguide.icu-project.org/strings/regexp#TOC-Regular-Expression-Metacharacters). | + | For the currently complete list, see [ICU Regular Expression Metacharacters](https://www.keyboardmaestro.com/action/linkthru?regularexpressionreference). |
| - | + | ||
| - | **New Metacharacters Available in ICU 55+**(([ICU Regular Expression Metacharacters](http://userguide.icu-project.org/strings/regexp#TOC-Regular-Expression-Metacharacters))) | + | |
| [ICU 55](http://site.icu-project.org/download/55) was released on 2015-04-01, and is available in the follow software versions: | [ICU 55](http://site.icu-project.org/download/55) was released on 2015-04-01, and is available in the follow software versions: | ||
| Line 66: | Line 62: | ||
| These Metacharacters offer some powerful solutions to long-standing RegEx problems. These can replace complicated RegEx patterns previously required, and are recommended for use if you are running the required versions. For example, `\h` and `\R`. ICU 55 is _not_ available in all RegEx engines. A notable exception is JavaScript (and JXA), even in High Sierra. So if you are using the native Keyboard Maestro Actions that use RegEx, it would be available, but not necessarily in Actions that use Execute Script in another language. It is available in Execute AppleScript Actions that use ASObjC RegEx. | These Metacharacters offer some powerful solutions to long-standing RegEx problems. These can replace complicated RegEx patterns previously required, and are recommended for use if you are running the required versions. For example, `\h` and `\R`. ICU 55 is _not_ available in all RegEx engines. A notable exception is JavaScript (and JXA), even in High Sierra. So if you are using the native Keyboard Maestro Actions that use RegEx, it would be available, but not necessarily in Actions that use Execute Script in another language. It is available in Execute AppleScript Actions that use ASObjC RegEx. | ||
| - | ^ New Metacharacters in ICU 55+(([ICU Regular Expression Metacharacters](http://userguide.icu-project.org/strings/regexp#TOC-Regular-Expression-Metacharacters))) ^^^ | + | ^ New Metacharacters in ICU 55+(([ICU Regular Expression Metacharacters](https://www.keyboardmaestro.com/action/linkthru?regularexpressionreference))) ^^^ |
| ^ Character ^ Alternate Expression\\ (Pre ICU 55) ^ Description ^ | ^ Character ^ Alternate Expression\\ (Pre ICU 55) ^ Description ^ | ||
| | `\h` | `[^\S\r\n\f]` | Match a Horizontal White Space character.\\ They are characters with Unicode General Category of Space_Separator plus the ASCII tab (\u0009). | | | `\h` | `[^\S\r\n\f]` | Match a Horizontal White Space character.\\ They are characters with Unicode General Category of Space_Separator plus the ASCII tab (\u0009). | | ||
| Line 135: | Line 131: | ||
| ==== General ==== | ==== General ==== | ||
| - | - [[http://userguide.icu-project.org/strings/regexp|ICU Regular Expressions]] | + | - [[https://www.keyboardmaestro.com/action/linkthru?regularexpressionreferenceoverview|ICU Regular Expressions]] |
| - [ICU Unicode Properties for Regular Expressions](http://unicode.keyboardmaestro.com) | - [ICU Unicode Properties for Regular Expressions](http://unicode.keyboardmaestro.com) | ||
| - [[https://en.wikipedia.org/wiki/Regular_expression|Wikpedia Regular Expression article]] | - [[https://en.wikipedia.org/wiki/Regular_expression|Wikpedia Regular Expression article]] | ||
Regular_Expressions.txt · Last modified: 2022/11/10 03:29 by ccstone
Page Tools
