1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Banzai::Pipeline::PlainMarkdownPipeline do
using RSpec::Parameterized::TableSyntax
describe 'backslash escapes' do
let_it_be(:project) { create(:project, :public) }
let_it_be(:issue) { create(:issue, project: project) }
def correct_html_included(markdown, expected)
result = described_class.call(markdown, {})
expect(result[:output].to_html).to include(expected)
result
end
context 'when feature flag honor_escaped_markdown is disabled' do
before do
stub_feature_flags(honor_escaped_markdown: false)
end
it 'does not escape the markdown' do
result = described_class.call(%q(\!), project: project)
output = result[:output].to_html
expect(output).to eq('<p data-sourcepos="1:1-1:2">!</p>')
expect(result[:escaped_literals]).to be_falsey
end
end
# Test strings taken from https://spec.commonmark.org/0.29/#backslash-escapes
describe 'CommonMark tests', :aggregate_failures do
it 'converts all ASCII punctuation to literals' do
markdown = %q(\!\"\#\$\%\&\'\*\+\,\-\.\/\:\;\<\=\>\?\@\[\]\^\_\`\{\|\}\~) + %q[\(\)\\\\]
punctuation = %w(! " # $ % & ' * + , - . / : ; < = > ? @ [ \\ ] ^ _ ` { | } ~) + %w[( )]
result = described_class.call(markdown, project: project)
output = result[:output].to_html
punctuation.each { |char| expect(output).to include("<span>#{char}</span>") }
expect(result[:escaped_literals]).to be_truthy
end
it 'does not convert other characters to literals' do
markdown = %q(\→\A\a\ \3\φ\«)
expected = '\→\A\a\ \3\φ\«'
result = correct_html_included(markdown, expected)
expect(result[:escaped_literals]).to be_falsey
end
describe 'escaped characters are treated as regular characters and do not have their usual Markdown meanings' do
where(:markdown, :expected) do
%q(\*not emphasized*) | %q(<span>*</span>not emphasized*)
%q(\<br/> not a tag) | %q(<span><</span>br/> not a tag)
%q!\[not a link](/foo)! | %q!<span>[</span>not a link](/foo)!
%q(\`not code`) | %q(<span>`</span>not code`)
%q(1\. not a list) | %q(1<span>.</span> not a list)
%q(\# not a heading) | %q(<span>#</span> not a heading)
%q(\[foo]: /url "not a reference") | %q(<span>[</span>foo]: /url "not a reference")
%q(\ö not a character entity) | %q(<span>&</span>ouml; not a character entity)
end
with_them do
it 'keeps them as literals' do
correct_html_included(markdown, expected)
end
end
end
it 'backslash is itself escaped, the following character is not' do
markdown = %q(\\\\*emphasis*)
expected = %q(<span>\</span><em>emphasis</em>)
correct_html_included(markdown, expected)
end
it 'backslash at the end of the line is a hard line break' do
markdown = <<~MARKDOWN
foo\\
bar
MARKDOWN
expected = "foo<br>\nbar"
correct_html_included(markdown, expected)
end
describe 'backslash escapes do not work in code blocks, code spans, autolinks, or raw HTML' do
where(:markdown, :expected) do
%q(`` \[\` ``) | %q(<code>\[\`</code>)
%q( \[\]) | %Q(<code>\\[\\]\n</code>)
%Q(~~~\n\\[\\]\n~~~) | %Q(<code>\\[\\]\n</code>)
%q(<http://example.com?find=\*>) | %q(<a href="http://example.com?find=%5C*">http://example.com?find=\*</a>)
%q[<a href="/bar\/)">] | %q[<a href="/bar%5C/)">]
end
with_them do
it { correct_html_included(markdown, expected) }
end
end
describe 'work in all other contexts, including URLs and link titles, link references, and info strings in fenced code blocks' do
where(:markdown, :expected) do
%q! | %q(<a href="/bar*" title="ti*tle">foo</a>)
%Q![foo]\n\n[foo]: /bar\\* "ti\\*tle"! | %q(<a href="/bar*" title="ti*tle">foo</a>)
%Q(``` foo\\+bar\nfoo\n```) | %Q(<code lang="foo+bar">foo\n</code>)
end
with_them do
it { correct_html_included(markdown, expected) }
end
end
end
end
end
|
