regex101: PCRE (Legacy) Match Workspace

Regular Expression

(--[\w-]+:[\s]*[^;\n}]+)

New

these should match
:root {
  --externalcolor: red;
  --samename: orange;
  --samename: #0f0;
  --foo: green;
  --FOO: #0f0;
  --halfsuccess: orange;
/* multiple on one line */
  --success: green;--success2: #0f0;
/* forget the ; */
  --success: green
  --success2: #0f0

  --fred: var(--foo);
  --barney: var(--foo, test)
}

:root {
  /* name options */
  --4name: startsWithNumber;
  --name: startsWithLetter;
  /* value options */
  --startWithLetter: red;
  --startWithPound: #0f0;
  --startWithNumber: 20px;
  --startWithQuoteDouble: "test";
  --startWithQuoteSingle: 'test';
  --containsUrl: url("http://test.com/foo?a=b&c=d");
  --containsPunctuation: -_,.;
  --containsSpace: "test space";

  /* misc conditions*/
  --multipleOnOneLine1: green; --multipleOnOneLine2: #0f0;
  --noSpaceAfterColon:test;
  --multiSpaceAfterColon:     test;
  --dash-in-name: test;
  --underscore_in_name: test;

}
  /* minified css */
  :root{--almost-black:#222;}html{color:var(--almost-black)}body{color:var(--a

Substitution

these should match
:root {
  --externalcolor: red;
  --samename: orange;
  --samename: #0f0;
  --foo: green;
  --FOO: #0f0;
  --halfsuccess: orange;
/* multiple on one line */
  --success: green;--success2: #0f0;
/* forget the ; */
  --success: green
  --success2: #0f0

  --fred: var(--foo);
  --barney: var(--foo, test)
}

:root {
  /* name options */
  --4name: startsWithNumber;
  --name: startsWithLetter;
  /* value options */
  --startWithLetter: red;
  --startWithPound: #0f0;
  --startWithNumber: 20px;
  --startWithQuoteDouble: "test";
  --startWithQuoteSingle: 'test';
  --containsUrl: url("http://test.com/foo?a=b&c=d");
  --containsPunctuation: -_,.;
  --containsSpace: "test space";

  /* misc conditions*/
  --multipleOnOneLine1: green; --multipleOnOneLine2: #0f0;
  --noSpaceAfterColon:test;
  --multiSpaceAfterColon:     test;
  --dash-in-name: test;
  --underscore_in_name: test;

}
  /* minified css */
  :root{--almost-black:#222;}html{color:var(--almost-black)}body{color:var(--a