DEELX Regular Expression Syntax

Research project of RegExLab.

Summary

DEELX supports Perl compatible regular expression syntax. The basic patterns in DEELX are the same as it in most engines. At the part of extended syntax, DEELX has many special features than other engines.

Experienced users can refer to : DEELX Features .

Content

1. Basic Patterns
   1. Common characters
   2. Simple escaped characters
   3. Quoted characters (\Q...\E)
   4. Character sets
   5. Custom defined character sets
   6. Repeat quantifier
   7. Character boundary
   8. Alternative expressions
   9. Group
   10. Named group
   11. Backward reference
        
2. Extended Syntax
   1. Remark
   2. Mode modifier
   3. Non-capture group
   4. Zero-width assertion
   5. Independent expression
   6. Conditional expression
   7. Recursive expression
       
3. Match Mode
   1. IGNORECASE
   2. SINGLELINE
   3. MULTILINE
   4. GLOBAL
   5. RIGHTTOLEFT
   6. EXTENDED
       
4. Replace
1. $number
2. ${name}
3. $$
4. $&
5. $`
6. $'
7. $+
8. $_
    

Reference

[ Program Help] - Program guide, introduce how to use deelx in your code.

[ Regex Match Tracer] - Recommendable pattern compose and debug tool.