Regular Expressions

Use EmEditor’s integrated regular expression support with Unicode to make find and replace operations a breeze. The Find, Replace, Find in Files, and Replace in Files functions each allow you to make nuanced and agile changes to your work using regular expressions.

Regular Expressions find text patterns within an open document or in multiple files. A regular expression is a pattern of text that consists of ordinary characters, or literals, (for example, letters a-z) and special characters, known as metacharacters. The pattern describes one or more strings to match when searching text. EmEditor regular expression syntax is based on Perl regular expression syntax.

When using Regular Expressions, select the Find, Replace, Find in Files, or Replace in Files commands under the Search menu. Then check the Use Regular Expressions check box, and any other desired search parameters. Enter the Regular Expression to search for, and click Find. If using Replace or Replace in Files, also enter the text to replace the found text pattern with.

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