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Fix slight bug in katex (#21171)

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There is a small bug in #20571 whereby `$a a$b b$` will not be correctly
detected as a math inline block of `a a$b b`. This PR fixes this.

Also reenable test cases as per #21340 

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
zeripath 2022-10-05 19:55:36 +01:00 committed by GitHub
parent 2d2cf589f7
commit 93df41f506
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 153 additions and 69 deletions
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4
modules/markup/html_test.go
View file

@ -7,6 +7,7 @@ package markup_test
import (
"context"
"io"
"os"
"strings"
"testing"
@ -32,6 +33,7 @@ func TestMain(m *testing.M) {
if err := git.InitSimple(context.Background()); err != nil {
log.Fatal("git init failed, err: %v", err)
}
os.Exit(m.Run())
}
func TestRender_Commits(t *testing.T) {
@ -336,7 +338,7 @@ func TestRender_emoji(t *testing.T) {
`<p>Some text with <span class="emoji" aria-label="grinning face with smiling eyes">😄</span><span class="emoji" aria-label="grinning face with smiling eyes">😄</span> 2 emoji next to each other</p>`)
test(
"😎🤪🔐🤑❓",
`<p><span class="emoji" aria-label="smiling face with sunglasses">😎</span><span class="emoji" aria-label="zany face">🤪</span><span class="emoji" aria-label="locked with key">🔐</span><span class="emoji" aria-label="money-mouth face">🤑</span><span class="emoji" aria-label="question mark">❓</span></p>`)
`<p><span class="emoji" aria-label="smiling face with sunglasses">😎</span><span class="emoji" aria-label="zany face">🤪</span><span class="emoji" aria-label="locked with key">🔐</span><span class="emoji" aria-label="money-mouth face">🤑</span><span class="emoji" aria-label="red question mark">❓</span></p>`)
// should match nothing
test(

50
modules/markup/markdown/markdown_test.go
View file

@ -6,6 +6,7 @@ package markdown_test
import (
"context"
"os"
"strings"
"testing"
@ -37,6 +38,7 @@ func TestMain(m *testing.M) {
if err := git.InitSimple(context.Background()); err != nil {
log.Fatal("git init failed, err: %v", err)
}
os.Exit(m.Run())
}
func TestRender_StandardLinks(t *testing.T) {
@ -426,3 +428,51 @@ func TestRenderEmojiInLinks_Issue12331(t *testing.T) {
assert.NoError(t, err)
assert.Equal(t, expected, res)
}
func TestMathBlock(t *testing.T) {
const nl = "\n"
testcases := []struct {
testcase string
expected string
}{
{
"$a$",
`<p><code class="language-math is-loading">a</code></p>` + nl,
},
{
"$ a $",
`<p><code class="language-math is-loading">a</code></p>` + nl,
},
{
"$a$ $b$",
`<p><code class="language-math is-loading">a</code> <code class="language-math is-loading">b</code></p>` + nl,
},
{
`\(a\) \(b\)`,
`<p><code class="language-math is-loading">a</code> <code class="language-math is-loading">b</code></p>` + nl,
},
{
`$a a$b b$`,
`<p><code class="language-math is-loading">a a$b b</code></p>` + nl,
},
{
`a a$b b`,
`<p>a a$b b</p>` + nl,
},
{
`a$b $a a$b b$`,
`<p>a$b <code class="language-math is-loading">a a$b b</code></p>` + nl,
},
{
"$$a$$",
`<pre class="code-block is-loading"><code class="chroma language-math display">a</code></pre>` + nl,
},
}
for _, test := range testcases {
res, err := RenderString(&markup.RenderContext{}, test.testcase)
assert.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
assert.Equal(t, test.expected, res, "Unexpected result in testcase %q", test.testcase)
}
}

47
modules/markup/markdown/math/inline_parser.go
View file

@ -37,7 +37,7 @@ func NewInlineBracketParser() parser.InlineParser {
return defaultInlineBracketParser
}
// Trigger triggers this parser on $
// Trigger triggers this parser on $ or \
func (parser *inlineParser) Trigger() []byte {
return parser.start[0:1]
}
@ -50,29 +50,50 @@ func isAlphanumeric(b byte) bool {
// Parse parses the current line and returns a result of parsing.
func (parser *inlineParser) Parse(parent ast.Node, block text.Reader, pc parser.Context) ast.Node {
line, _ := block.PeekLine()
opener := bytes.Index(line, parser.start)
if opener < 0 {
return nil
}
if opener != 0 && isAlphanumeric(line[opener-1]) {
if !bytes.HasPrefix(line, parser.start) {
// We'll catch this one on the next time round
return nil
}
opener += len(parser.start)
ender := bytes.Index(line[opener:], parser.end)
if ender < 0 {
precedingCharacter := block.PrecendingCharacter()
if precedingCharacter < 256 && isAlphanumeric(byte(precedingCharacter)) {
// need to exclude things like `a$` from being considered a start
return nil
}
if len(line) > opener+ender+len(parser.end) && isAlphanumeric(line[opener+ender+len(parser.end)]) {
return nil
// move the opener marker point at the start of the text
opener := len(parser.start)
// Now look for an ending line
ender := opener
for {
pos := bytes.Index(line[ender:], parser.end)
if pos < 0 {
return nil
}
ender += pos
// Now we want to check the character at the end of our parser section
// that is ender + len(parser.end)
pos = ender + len(parser.end)
if len(line) <= pos {
break
}
if !isAlphanumeric(line[pos]) {
break
}
// move the pointer onwards
ender += len(parser.end)
}
block.Advance(opener)
_, pos := block.Position()
node := NewInline()
segment := pos.WithStop(pos.Start + ender)
segment := pos.WithStop(pos.Start + ender - opener)
node.AppendChild(node, ast.NewRawTextSegment(segment))
block.Advance(ender + len(parser.end))
block.Advance(ender - opener + len(parser.end))
trimBlock(node, block)
return node

4
modules/markup/markdown/meta.go
View file

@ -88,7 +88,9 @@ func ExtractMetadataBytes(contents []byte, out interface{}) ([]byte, error) {
line := contents[start:end]
if isYAMLSeparator(line) {
front = contents[frontMatterStart:start]
body = contents[end+1:]
if end+1 < len(contents) {
body = contents[end+1:]
}
break
}
}

4
modules/markup/markdown/meta_test.go
View file

@ -61,7 +61,7 @@ func TestExtractMetadataBytes(t *testing.T) {
var meta structs.IssueTemplate
body, err := ExtractMetadataBytes([]byte(fmt.Sprintf("%s\n%s\n%s\n%s", sepTest, frontTest, sepTest, bodyTest)), &meta)
assert.NoError(t, err)
assert.Equal(t, bodyTest, body)
assert.Equal(t, bodyTest, string(body))
assert.Equal(t, metaTest, meta)
assert.True(t, validateMetadata(meta))
})
@ -82,7 +82,7 @@ func TestExtractMetadataBytes(t *testing.T) {
var meta structs.IssueTemplate
body, err := ExtractMetadataBytes([]byte(fmt.Sprintf("%s\n%s\n%s", sepTest, frontTest, sepTest)), &meta)
assert.NoError(t, err)
assert.Equal(t, "", body)
assert.Equal(t, "", string(body))
assert.Equal(t, metaTest, meta)
assert.True(t, validateMetadata(meta))
})

96
modules/markup/markdown/renderconfig.go
View file

@ -5,10 +5,9 @@
package markdown
import (
"fmt"
"strings"
"code.gitea.io/gitea/modules/log"
"github.com/yuin/goldmark/ast"
"gopkg.in/yaml.v3"
)
@ -33,17 +32,13 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
}
rc.yamlNode = value
type basicRenderConfig struct {
Gitea *yaml.Node `yaml:"gitea"`
TOC bool `yaml:"include_toc"`
Lang string `yaml:"lang"`
type commonRenderConfig struct {
TOC bool `yaml:"include_toc"`
Lang string `yaml:"lang"`
}
var basic basicRenderConfig
err := value.Decode(&basic)
if err != nil {
return err
var basic commonRenderConfig
if err := value.Decode(&basic); err != nil {
return fmt.Errorf("unable to decode into commonRenderConfig %w", err)
}
if basic.Lang != "" {
@ -51,14 +46,48 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
}
rc.TOC = basic.TOC
if basic.Gitea == nil {
type controlStringRenderConfig struct {
Gitea string `yaml:"gitea"`
}
var stringBasic controlStringRenderConfig
if err := value.Decode(&stringBasic); err == nil {
if stringBasic.Gitea != "" {
switch strings.TrimSpace(strings.ToLower(stringBasic.Gitea)) {
case "none":
rc.Meta = "none"
case "table":
rc.Meta = "table"
default: // "details"
rc.Meta = "details"
}
}
return nil
}
var control *string
if err := basic.Gitea.Decode(&control); err == nil && control != nil {
log.Info("control %v", control)
switch strings.TrimSpace(strings.ToLower(*control)) {
type giteaControl struct {
Meta *string `yaml:"meta"`
Icon *string `yaml:"details_icon"`
TOC *bool `yaml:"include_toc"`
Lang *string `yaml:"lang"`
}
type complexGiteaConfig struct {
Gitea *giteaControl `yaml:"gitea"`
}
var complex complexGiteaConfig
if err := value.Decode(&complex); err != nil {
return fmt.Errorf("unable to decode into complexRenderConfig %w", err)
}
if complex.Gitea == nil {
return nil
}
if complex.Gitea.Meta != nil {
switch strings.TrimSpace(strings.ToLower(*complex.Gitea.Meta)) {
case "none":
rc.Meta = "none"
case "table":
@ -66,39 +95,18 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
default: // "details"
rc.Meta = "details"
}
return nil
}
type giteaControl struct {
Meta string `yaml:"meta"`
Icon string `yaml:"details_icon"`
TOC *yaml.Node `yaml:"include_toc"`
Lang string `yaml:"lang"`
if complex.Gitea.Icon != nil {
rc.Icon = strings.TrimSpace(strings.ToLower(*complex.Gitea.Icon))
}
var controlStruct *giteaControl
if err := basic.Gitea.Decode(controlStruct); err != nil || controlStruct == nil {
return err
if complex.Gitea.Lang != nil && *complex.Gitea.Lang != "" {
rc.Lang = *complex.Gitea.Lang
}
switch strings.TrimSpace(strings.ToLower(controlStruct.Meta)) {
case "none":
rc.Meta = "none"
case "table":
rc.Meta = "table"
default: // "details"
rc.Meta = "details"
}
rc.Icon = strings.TrimSpace(strings.ToLower(controlStruct.Icon))
if controlStruct.Lang != "" {
rc.Lang = controlStruct.Lang
}
var toc bool
if err := controlStruct.TOC.Decode(&toc); err == nil {
rc.TOC = toc
if complex.Gitea.TOC != nil {
rc.TOC = *complex.Gitea.TOC
}
return nil

17
modules/markup/markdown/renderconfig_test.go
View file

@ -5,6 +5,7 @@
package markdown
import (
"strings"
"testing"
"gopkg.in/yaml.v3"
@ -81,9 +82,9 @@ func TestRenderConfig_UnmarshalYAML(t *testing.T) {
TOC: true,
Lang: "testlang",
}, `
include_toc: true
lang: testlang
`,
include_toc: true
lang: testlang
`,
},
{
"complexlang", &RenderConfig{
@ -91,9 +92,9 @@ func TestRenderConfig_UnmarshalYAML(t *testing.T) {
Icon: "table",
Lang: "testlang",
}, `
gitea:
lang: testlang
`,
gitea:
lang: testlang
`,
},
{
"complexlang2", &RenderConfig{
@ -140,8 +141,8 @@ func TestRenderConfig_UnmarshalYAML(t *testing.T) {
Icon: "table",
Lang: "",
}
if err := yaml.Unmarshal([]byte(tt.args), got); err != nil {
t.Errorf("RenderConfig.UnmarshalYAML() error = %v", err)
if err := yaml.Unmarshal([]byte(strings.ReplaceAll(tt.args, "\t", " ")), got); err != nil {
t.Errorf("RenderConfig.UnmarshalYAML() error = %v\n%q", err, tt.args)
return
}