regex101: PCRE (Legacy) Match Workspace

^start of line

(?m)applies the following effective flags to the remainder of the pattern: gm

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Group indent(?<indent>\s*)

\s*any whitespace character, repeated any number of times

describethe literal text describe (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 2([^']+)

Negated Character Class[^']+

+matches at least one character outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^{]+

+matches at least one character outside the set below:

{the literal { (123₁₀ / 173₈ / 7B₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

Group 3([\s\S]+?)

Character Class[\s\S]+?

+?matches at least one character from the set below:

\sany whitespace character

\Sany non-whitespace character

\na line-feed (newline) character (ASCII 10)

\k<indent>the text saved by group indent

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

^(?m)(?<indent>\s*)describe\('([^']+)'[^{]+\{([\s\S]+?)\n\k<indent>\}\);

New

describe('a jasmine describe', function (){
    it('login', function(){
        //some function stuff
    });

    it('another it statement', function() {
        //some additional stuff
    });
});

	describe('a jasmine describe', function (){
    		it('login', function(){
        	//some function stuff
    		});

    		it('another it statement', function() {
        	//some additional stuff
    		});
	});

   describe('a jasmine describe', function (){
    		it('login', function(){
        	//some function stuff
    		});

    		it('another it statement', function() {
        	//some additional stuff
    		});
   });

Substitution

describe('a jasmine describe', function (){
    it('login', function(){
        //some function stuff
    });

    it('another it statement', function() {
        //some additional stuff
    });
});

	describe('a jasmine describe', function (){
    		it('login', function(){
        	//some function stuff
    		});

    		it('another it statement', function() {
        	//some additional stuff
    		});
	});

   describe('a jasmine describe', function (){
    		it('login', function(){
        	//some function stuff
    		});

    		it('another it statement', function() {
        	//some additional stuff
    		});
   });