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<?php $content= <<<'DATA' ## Section title Lorem ipsum *dolores* sic amet. $E = mc^2$, and since : $$ \cos(3*\pi*\sqrt{2}) = \delta $$ DATA; $content = preg_replace_callback( '/^\$+(?:\R(?!\$+$).*)*\R\$+$(*SKIP)(*FAIL)|([*_])((?:(?!\1).)+)\1/m', function ($m) { return "<i>" . $m[2] . "</i>"; }, $content ); echo $content;
Output for git.master, git.master_jit, rfc.property-hooks
## Section title Lorem ipsum <i>dolores</i> sic amet. $E = mc^2$, and since : $$ \cos(3*\pi*\sqrt{2}) = \delta $$

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