VS Code syntax highlighting for the Indent Markup Language used by
diagram-app (.inml files).
This is the pragmatic "baseline" highlighting extension: it uses a plain
TextMate grammar (syntaxes/indent.tmLanguage.json), since VS Code's built-in
editor does not support Tree-sitter grammars directly. The canonical,
structurally-correct grammar for Indent lives in the sibling
treesitter-indent package (used for other tools -- linting, other editors,
CLI tooling, etc.).
What gets highlighted
The leading bareword type/tag of each line (org, service, ->,
include, ...) as a keyword.
key= attribute names as parameters.
"..." string values, unquoted true/false booleans, and unquoted
numeric values, each with their own scope.
Full-line ; comments.
A trailing \ line-continuation marker gets a visible color.
Backslash-continued statements (a line ending in \, joined with one or
more following physical lines) are highlighted correctly across every
continued line via a multi-line begin/end TextMate rule
(#statement-with-continuation) -- not just the first line.
Development
Install test-only dependencies and run the smoke tests (these exercise the
real grammar via vscode-textmate + vscode-oniguruma, not just eyeballing
the regexes):
npm install
npm test
test/smoke-test.js tokenizes a small hand-written snippet and prints every
token's scope. test/smoke-test-file.js <path> tokenizes an entire .inml
file and reports any line whose real content ends up with no specific scope
(i.e. unclassified) -- both should show zero unclassified content, including
across backslash-continued statements.
Installing locally in VS Code
This extension isn't published to the Marketplace. To try it locally:
Open this folder in VS Code.
Press F5 (or use "Run Extension" in the Debug panel) to launch an
Extension Development Host window with the extension loaded.
