Support disabling section numbers in preview.

package.json

@@ -192,6 +192,11 @@
                     "default": false,
                     "description": "Suppress node separators in preview."
                 },
+                "texinfo.preview.noNumberSections": {
+                    "type": "boolean",
+                    "default": false,
+                    "description": "Do not display chapter and section numbers in preview"
+                },
                 "texinfo.preview.noValidation": {
                     "type": "boolean",
                     "default": false,

src/options.ts

@@ -64,6 +64,10 @@ export default class Options {
         return this.getBoolean('preview.noHeaders');
     }
 
+    get noNumberSections() {
+        return this.getBoolean('preview.noNumberSections');
+    }
+
     get noValidation() {
         return this.getBoolean('preview.noValidation');
     }

src/utils/converter.ts

@@ -36,6 +36,7 @@ export default class Converter {
         const options = ['-o-', '--no-split', '--html', `--error-limit=${this.options.errorLimit}`,
             `--init-file=${this.initFile}`, '-D', `__vscode_texinfo_image_uri_base ${newPath}`];
         this.options.noHeaders && options.push('--no-headers');
+        this.options.noNumberSections && options.push('--no-number-sections');
         this.options.noValidation && options.push('--no-validate');
         this.options.noWarnings && options.push('--no-warn');
         if (insertScript !== undefined) {