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Regular_Expressions [2018/07/08 20:58]
JMichaelTX [ICU 55+ Metacharacters]
Regular_Expressions [2019/02/03 11:16]
ccstone [Software]
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 There are many Actions in Keyboard Maestro where you can use a regular expression, which may not be obvious. ​ For more info see [Places where Regular Expressions can be used](https://​forum.keyboardmaestro.com/​t/​places-where-regular-expressions-can-be-used/​4392). There are many Actions in Keyboard Maestro where you can use a regular expression, which may not be obvious. ​ For more info see [Places where Regular Expressions can be used](https://​forum.keyboardmaestro.com/​t/​places-where-regular-expressions-can-be-used/​4392).
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 ===== Search Modifiers ===== ===== Search Modifiers =====
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 ===== Capture Groups ===== ===== Capture Groups =====
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   * Use the form of `$<​CG#>​`,​ or `\<​CG#>​` (in ver 8+) in the Action Replace box, where `<​CG#>​` is the number for the capture group. ​   * Use the form of `$<​CG#>​`,​ or `\<​CG#>​` (in ver 8+) in the Action Replace box, where `<​CG#>​` is the number for the capture group. ​
   * Examples: ​   * Examples: ​
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 For more information,​ see [[https://​www.regular-expressions.info/​brackets.html | Capture Groups]]. For more information,​ see [[https://​www.regular-expressions.info/​brackets.html | Capture Groups]].
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 You can use Keyboard Maestro [[Tokens|Text Tokens]] anywhere appropriate in both the Search pattern and the Replace pattern. You can use Keyboard Maestro [[Tokens|Text Tokens]] anywhere appropriate in both the Search pattern and the Replace pattern.
  
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 ===== ICU 55+ Metacharacters ===== ===== ICU 55+ Metacharacters =====
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 [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:
   * macOS 10.11+ (El Capitan) except for JavaScript   * macOS 10.11+ (El Capitan) except for JavaScript
-  * Keyboard Maestro ​8.0+ Native Actions ​[FIXME: ​ Need to confirm KM version]+  * Keyboard Maestro Native Actions
  
 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.
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-[FIXME: ​ Need to confirm and complete Alternate Expressions] 
  
 ^   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](http://​userguide.icu-project.org/​strings/​regexp#​TOC-Regular-Expression-Metacharacters))) ​  ^^^
 ^ 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). |
-| `\H` | TBD | Match a non-Horizontal White Space character. | +| `\H` | `[\S\r\n\f]` ​| Match a non-Horizontal White Space character. | 
-| `\k<​name>​` | TBD | Named Capture Back Reference. |+| `\k<​name>​` | //No Alternative// ​| Named Capture Back Reference. |
 | `\R` | `(?:​\r?​\n|\r)` | Match a new line character, or the sequence CR LF.\\ The new line characters are \u000a, \u000b, \u000c, \u000d, \u0085, \u2028, \u2029 | | `\R` | `(?:​\r?​\n|\r)` | Match a new line character, or the sequence CR LF.\\ The new line characters are \u000a, \u000b, \u000c, \u000d, \u0085, \u2028, \u2029 |
 | `\v` | `[\n\r]` | Match a new line character.\\ The new line characters are \u000a, \u000b, \u000c, \u000d, \u0085, \u2028, \u2029.\\ Does not match the new line sequence CR LF. | | `\v` | `[\n\r]` | Match a new line character.\\ The new line characters are \u000a, \u000b, \u000c, \u000d, \u0085, \u2028, \u2029.\\ Does not match the new line sequence CR LF. |
-| `\V` | TBD | Match a non-new line character. | +| `\V` | `[^\n\r]` ​| Match a non-new line character. | 
- +For an in-depth discussion, see this Forum topic: [RegEx for Horizontal Whitespace](https://​forum.keyboardmaestro.com/​t/​wiki-update-regex-icu-55-metacharacters/​10788).
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 ===== Examples ===== ===== Examples =====
  
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 ===== See also: ===== ===== See also: =====
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 === Actions === === Actions ===
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 * [[:​Triggers|See all Triggers]] * [[:​Triggers|See all Triggers]]
  
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 ==== Macros That Use RegEx ==== ==== Macros That Use RegEx ====
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 ==== Software ==== ==== Software ====
  
-  ​[[http://​www.barebones.com/​products/​textwrangler/|TextWrangler (a freeware text editor ​with PCRE regular expression support)]] +  ​[[http://​www.barebones.com/​products/​bbedit/|BBEdit]] -- A Programming Editor ​with PCRE regular expression support.      
-  ​[[http://​itunes.apple.com/​us/​app/​patterns-the-regex-app/​id429449079?​mt=12|Patterns ​— a regular expression analyzer on the app-store]] +    * The commercial demo expires in 30 days and reverts to the still //very// powerful BBEdit-Lite (freeware)
-  ​[[https://​itunes.apple.com/​us/​app/​regexrx/​id498370702?​mt=12|RegExRX ​— a regular expression analyzer on the app-store]] +''''​ 
-  ​[[https://​regex101.com|RegEx101.com]] -- Online RegEx Analyzer+ 
 +  ​[[http://​itunes.apple.com/​us/​app/​patterns-the-regex-app/​id429449079?​mt=12|Patterns]] -- A regular expression analyzer ​available ​on the app-store. 
 +  ​[[https://​itunes.apple.com/​us/​app/​regexrx/​id498370702?​mt=12|RegExRX]] -- A regular expression analyzer ​available ​on the app-store
 + 
 +  ​''''​ 
 + 
 +  * [[https://​regex101.com|RegEx101.com]] -- An Outstanding and Comprehensive ​Online RegEx Analyzer
 +  * [[http://​regexr.com/​|Regexr]] -- Regex testing and explaining, examples and references.
  
 ==== Books ==== ==== Books ====
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   - [Regular Expressions Quick Start](http://​www.regular-expressions.info/​quickstart.html)   - [Regular Expressions Quick Start](http://​www.regular-expressions.info/​quickstart.html)
   - [[http://​www.codeproject.com/​KB/​dotnet/​regextutorial.aspx|CodeProject.com RegExTutorial]]   - [[http://​www.codeproject.com/​KB/​dotnet/​regextutorial.aspx|CodeProject.com RegExTutorial]]
-  - [[http://​regexr.com/​|Regexr ​ - Regex testing and explaining, examples and references]] 
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 Keywords: ​ //Regular Expression, RegEx, RegExp, Find, Replace, Match// Keywords: ​ //Regular Expression, RegEx, RegExp, Find, Replace, Match//
Regular_Expressions.txt · Last modified: 2019/02/03 11:16 by ccstone