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FontLockMode

FontLockMode (or FontLock) highlights (“fontifies”) the syntax of programming languages and other files with specific syntaxes. For this reason, it is also referred to as SyntaxHighlighting. This visual recognition in the file makes it easier to understand a file, and provides visual cues where syntax errors exist. Highlighting occurs as the programmer inputs their code.

FontLockMode has nothing to do with configuring your favorite font for use in Emacs. Permanently adding color and other font setting to documents in Emacs is done with EnrichedMode.

The syntactic fontification rules for a programming language or other file format is typically provided by the MajorMode. See ProgrammingModes.

See EnablingFontLock to learn how to turn on FontLockMode.

Users can AddKeywords to define new highlighting rules.

To add font-lock rules to a MajorMode, see FontLockForNewModes.

See CustomizingFaces to change the font Face settings used by font-lock.


CategoryFaces CategoryModes