Added markdown parsing rules to tag special syntax to be not modified when saved

Added a markdown-it and tiptap extension to tag special, unknown,
markdown syntax which would be escaped by prosemirror-markdown on save.
The tagged part is not touched while saving if they are not modified manually.

Signed-off-by: Ferdinand Thiessen <rpm@fthiessen.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/tests/markdown.spec.js b/src/tests/markdown.spec.js
index a682111a3..e6ce10819 100644
--- a/src/tests/markdown.spec.js
+++ b/src/tests/markdown.spec.js
@@ -45,7 +45,8 @@ describe('Commonmark', () => {
 			const expected = entry.markdown.includes('__')
 				? entry.html.replace(/<strong>/g, '<u>').replace(/<\/strong>/g, '</u>')
 				: entry.html
-			expect(markdownit.render(entry.markdown)).toBe(expected)
+			// Ignore special markup for untouched markdown
+			expect(markdownit.render(entry.markdown).replace(/<span class="keep-md">([^<]+)<\/span>/g, '$1')).toBe(expected)
 		})
 	})
 })
@@ -95,6 +96,12 @@ describe('Markdown though editor', () => {
 	test('code block', () => {
 		expect(markdownThroughEditor('```\n<?php echo "Hello World";\n```')).toBe('```\n<?php echo "Hello World";\n```')
 	})
+	test('markdown untouched', () => {
+		// Issue #2703
+		expect(markdownThroughEditor('[bar\\\\]: /uri\n\n[bar\\\\]')).toBe('[bar\\\\](/uri)')
+		expect(markdownThroughEditor('## Test \\')).toBe('## Test \\')
+		expect(markdownThroughEditor('- [ [asd](sdf)')).toBe('* [ [asd](sdf)')
+	})
 	test('checkboxes', () => {
 		// Invalid ones but should be syntactical unchanged
 		expect(markdownThroughEditor('- [F] asd')).toBe('* [F] asd')