A SublimeText syntax definition for BBC BASIC text files to enable syntax highlighting. Although the keywords are complete for the BASIC V/VI versions used by RISC OS, it should also be suitable for earlier versions, as well as versions for other platforms.

The syntax colouring recognises the keywords, and some of the language features.

The coloured features are:

• Comments, prefixed by REM.
• Function and procedure declarations (and their end).
• Function and procedure invocations.
• Control and loop structures.
• Line number prefixes.
• BASIC style hex (&xxx) and binary (%bbb) numbers.
• CLI commands, prefixed by * at the start of a line.

Unsupported features:

• Inline assembly blocks.
• Understanding of the context.

BBC BASIC files are usually given names with a suffix ,fd1 when stored on non-RISC OS filesystems. fd1 is the filetype number for Textual BASIC code. Non-RISC OS versions of BBC BASIC use the extension .bbc which is recognised by the syntax mode.

To force the use of the BBC BASIC mode for these files, it is recommended that the ApplySyntax package (or similar) be used to select the syntax mode.

The following configuration is suitable for use within ApplySyntax.sublime-settings:

        {
            // BBC Basic using RISC OS naming convention and extension
            "syntax": "BBCBASIC/BBCBASIC",
            "rules": [
                {"file_path": ".*(,fd1|\\.bbc)$"},
            ]
        },

• Place the BBCBASIC.sublime-syntax file inside the Sublime Text packages User folder (Preferences | Browse Packages...)
• Restart Sublime Text

• Install Package Control
• Run “Package Control: Install Package” command, find and install BBC BASIC package.
• Restart Sublime Text if necessary

This package is licensed under the MIT License.