This automatic language detection presents potential problems. There are several syntax highlighting libraries or "engines" that can be used in other applications, but are not complete programs in themselves, for example the Generic Syntax Highlighter (GeSHi) extension for PHP.įor editors that support more than one language, the user can usually specify the language of the text, such as C, LaTeX, HTML, or the text editor can automatically recognize it based on the file extension or by scanning contents of the file.
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Some text editors can also export the coloured markup in a format that is suitable for printing or for importing into word-processing and other kinds of text-formatting software for instance as a HTML, colorized LaTeX, PostScript or RTF version of its syntax highlighting. Support in text editors gedit supports syntax highlighting
Additionally, data gathered from an eye-tracker during the study suggested that syntax highlighting enables programmers to pay less attention to standard syntactic components such as keywords. This makes it simple to see if a brace has been left out or locate the match of the brace the cursor is on by highlighting the pair in a different color.Ī study published in the conference PPIG evaluated the effects of syntax highlighting on the comprehension of short programs, finding that the presence of syntax highlighting significantly reduces the time taken for a programmer to internalise the semantics of a program. Brace matching is another important feature with many popular editors. Consequently, spotting a missing delimiter is much easier because of the contrasting color of the text. For example, most editors highlight string literals in a different color. Syntax highlighting also helps programmers find errors in their program. The reader can easily ignore large sections of comments or code, depending on what they are looking for.
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Syntax highlighting is one strategy to improve the readability and context of the text especially for code that spans several pages. Practical benefits Highlighting the effect of missing delimiter (after watch='false) in JavaScript Some editors also integrate syntax highlighting with other features, such as spell checking or code folding, as aids to editing which are external to the language. Syntax highlighting is a form of secondary notation, since the highlights are not part of the text meaning, but serve to reinforce it. Highlighting does not affect the meaning of the text itself it is intended only for human readers. This feature is also employed in many programming related contexts (such as programming manuals), either in the form of colorful books or online websites to make understanding code snippets easier for readers.
This feature facilitates writing in a structured language such as a programming language or a markup language as both structures and syntax errors are visually distinct.
The feature displays text, especially source code, in different colours and fonts according to the category of terms. Syntax highlighting is a feature of text editors that is used for programming, scripting, or markup languages, such as HTML. For syntax highlighting on Wikipedia and other MediaWiki wikis, see Wikipedia:Syntax highlighting.
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