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The intention was to create an alternative to the java-based source code editor, JEXT In 2003, Notepad++, a source code editor for Windows, was released by Don Ho. IBM's LPEX (Live Parsing Extensible Editor) was based on LEXX and ran on VM/CMS, OS/2, OS/400, Windows, and Java Īlthough the initial public release of vim was in 1991, the syntax highlighting feature was not introduced until version 5.0 in 1998. LEXX used live parsing and used color and fonts for syntax highlighting. In 1985, Mike Cowlishaw of IBM created LEXX while seconded to the Oxford University Press. Relevant discussion may be found on the talk page. Many source code editors such as neovim and Brackets have added a built-in LSP client while other editors such as Emacs, vim, and Sublime Text have support for an LSP Client via a separate plug-in. This allows for source code editors to easily support more languages with syntax highlighting, refactoring, and reference finding. The Language Server Protocol, first used in Microsoft's Visual Studio Code, allows for source code editors to implement an LSP client that can read syntax information about any language with a LSP server. Such tokenizing editors later uncompress the source code when viewing it, possibly prettyprinting it with consistent capitalization and spacing. A few source-code editors compress source code, typically converting common keywords into single-byte tokens, removing unnecessary whitespace, and converting numbers to a binary form. For this reason, strict structure editors are not popular for source code editing, though some IDEs provide similar functionality.Ī source-code editor can check syntax while code is being entered and immediately warn of syntax problems. Structure editors also require extensive support for each language, and thus are harder to extend to new languages than text editors, where basic support only requires supporting syntax highlighting or indentation. In this case features such as syntax highlighting, validation, and code formatting are easily and efficiently implemented from the concrete syntax tree or abstract syntax tree, but editing is often more rigid than free-form text. Structure editors are a different form of source-code editor, where instead of editing raw text, one manipulates the code's structure, generally the abstract syntax tree. So, while many text editors like Notepad can be used to edit source code, if they don't enhance, automate or ease the editing of code, they are not source-code editors. These editors also provide a convenient way to run a compiler, interpreter, debugger, or other program relevant for the software-development process. Source-code editors have characteristics specifically designed to simplify and speed up typing of source code, such as syntax highlighting, indentation, autocomplete and brace matching functionality.

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