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Fix slight bug in katex (#21171)

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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@ -7,6 +7,7 @@ package markup_test
import ( import (
"context" "context"
"io" "io"
"os"
"strings" "strings"
"testing" "testing"
@ -32,6 +33,7 @@ func TestMain(m *testing.M) {
if err := git.InitSimple(context.Background()); err != nil { if err := git.InitSimple(context.Background()); err != nil {
log.Fatal("git init failed, err: %v", err) log.Fatal("git init failed, err: %v", err)
} }
os.Exit(m.Run())
} }
func TestRender_Commits(t *testing.T) { 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>`) `<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( 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 // should match nothing
test( test(

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@ -6,6 +6,7 @@ package markdown_test
import ( import (
"context" "context"
"os"
"strings" "strings"
"testing" "testing"
@ -37,6 +38,7 @@ func TestMain(m *testing.M) {
if err := git.InitSimple(context.Background()); err != nil { if err := git.InitSimple(context.Background()); err != nil {
log.Fatal("git init failed, err: %v", err) log.Fatal("git init failed, err: %v", err)
} }
os.Exit(m.Run())
} }
func TestRender_StandardLinks(t *testing.T) { func TestRender_StandardLinks(t *testing.T) {
@ -426,3 +428,51 @@ func TestRenderEmojiInLinks_Issue12331(t *testing.T) {
assert.NoError(t, err) assert.NoError(t, err)
assert.Equal(t, expected, res) 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)
}
}

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@ -37,7 +37,7 @@ func NewInlineBracketParser() parser.InlineParser {
return defaultInlineBracketParser return defaultInlineBracketParser
} }
// Trigger triggers this parser on $ // Trigger triggers this parser on $ or \
func (parser *inlineParser) Trigger() []byte { func (parser *inlineParser) Trigger() []byte {
return parser.start[0:1] 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. // 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 { func (parser *inlineParser) Parse(parent ast.Node, block text.Reader, pc parser.Context) ast.Node {
line, _ := block.PeekLine() line, _ := block.PeekLine()
opener := bytes.Index(line, parser.start)
if opener < 0 { if !bytes.HasPrefix(line, parser.start) {
return nil // We'll catch this one on the next time round
}
if opener != 0 && isAlphanumeric(line[opener-1]) {
return nil return nil
} }
opener += len(parser.start) precedingCharacter := block.PrecendingCharacter()
ender := bytes.Index(line[opener:], parser.end) if precedingCharacter < 256 && isAlphanumeric(byte(precedingCharacter)) {
if ender < 0 { // need to exclude things like `a$` from being considered a start
return nil return nil
} }
if len(line) > opener+ender+len(parser.end) && isAlphanumeric(line[opener+ender+len(parser.end)]) {
// 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 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) block.Advance(opener)
_, pos := block.Position() _, pos := block.Position()
node := NewInline() node := NewInline()
segment := pos.WithStop(pos.Start + ender) segment := pos.WithStop(pos.Start + ender - opener)
node.AppendChild(node, ast.NewRawTextSegment(segment)) node.AppendChild(node, ast.NewRawTextSegment(segment))
block.Advance(ender + len(parser.end)) block.Advance(ender - opener + len(parser.end))
trimBlock(node, block) trimBlock(node, block)
return node return node

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

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

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@ -5,10 +5,9 @@
package markdown package markdown
import ( import (
"fmt"
"strings" "strings"
"code.gitea.io/gitea/modules/log"
"github.com/yuin/goldmark/ast" "github.com/yuin/goldmark/ast"
"gopkg.in/yaml.v3" "gopkg.in/yaml.v3"
) )
@ -33,17 +32,13 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
} }
rc.yamlNode = value rc.yamlNode = value
type basicRenderConfig struct { type commonRenderConfig struct {
Gitea *yaml.Node `yaml:"gitea"`
TOC bool `yaml:"include_toc"` TOC bool `yaml:"include_toc"`
Lang string `yaml:"lang"` Lang string `yaml:"lang"`
} }
var basic commonRenderConfig
var basic basicRenderConfig if err := value.Decode(&basic); err != nil {
return fmt.Errorf("unable to decode into commonRenderConfig %w", err)
err := value.Decode(&basic)
if err != nil {
return err
} }
if basic.Lang != "" { if basic.Lang != "" {
@ -51,14 +46,16 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
} }
rc.TOC = basic.TOC rc.TOC = basic.TOC
if basic.Gitea == nil {
return nil type controlStringRenderConfig struct {
Gitea string `yaml:"gitea"`
} }
var control *string var stringBasic controlStringRenderConfig
if err := basic.Gitea.Decode(&control); err == nil && control != nil {
log.Info("control %v", control) if err := value.Decode(&stringBasic); err == nil {
switch strings.TrimSpace(strings.ToLower(*control)) { if stringBasic.Gitea != "" {
switch strings.TrimSpace(strings.ToLower(stringBasic.Gitea)) {
case "none": case "none":
rc.Meta = "none" rc.Meta = "none"
case "table": case "table":
@ -66,22 +63,31 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
default: // "details" default: // "details"
rc.Meta = "details" rc.Meta = "details"
} }
}
return nil return nil
} }
type giteaControl struct { type giteaControl struct {
Meta string `yaml:"meta"` Meta *string `yaml:"meta"`
Icon string `yaml:"details_icon"` Icon *string `yaml:"details_icon"`
TOC *yaml.Node `yaml:"include_toc"` TOC *bool `yaml:"include_toc"`
Lang string `yaml:"lang"` Lang *string `yaml:"lang"`
} }
var controlStruct *giteaControl type complexGiteaConfig struct {
if err := basic.Gitea.Decode(controlStruct); err != nil || controlStruct == nil { Gitea *giteaControl `yaml:"gitea"`
return err }
var complex complexGiteaConfig
if err := value.Decode(&complex); err != nil {
return fmt.Errorf("unable to decode into complexRenderConfig %w", err)
} }
switch strings.TrimSpace(strings.ToLower(controlStruct.Meta)) { if complex.Gitea == nil {
return nil
}
if complex.Gitea.Meta != nil {
switch strings.TrimSpace(strings.ToLower(*complex.Gitea.Meta)) {
case "none": case "none":
rc.Meta = "none" rc.Meta = "none"
case "table": case "table":
@ -89,16 +95,18 @@ func (rc *RenderConfig) UnmarshalYAML(value *yaml.Node) error {
default: // "details" default: // "details"
rc.Meta = "details" rc.Meta = "details"
} }
rc.Icon = strings.TrimSpace(strings.ToLower(controlStruct.Icon))
if controlStruct.Lang != "" {
rc.Lang = controlStruct.Lang
} }
var toc bool if complex.Gitea.Icon != nil {
if err := controlStruct.TOC.Decode(&toc); err == nil { rc.Icon = strings.TrimSpace(strings.ToLower(*complex.Gitea.Icon))
rc.TOC = toc }
if complex.Gitea.Lang != nil && *complex.Gitea.Lang != "" {
rc.Lang = *complex.Gitea.Lang
}
if complex.Gitea.TOC != nil {
rc.TOC = *complex.Gitea.TOC
} }
return nil return nil

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@ -5,6 +5,7 @@
package markdown package markdown
import ( import (
"strings"
"testing" "testing"
"gopkg.in/yaml.v3" "gopkg.in/yaml.v3"
@ -83,7 +84,7 @@ func TestRenderConfig_UnmarshalYAML(t *testing.T) {
}, ` }, `
include_toc: true include_toc: true
lang: testlang lang: testlang
`, `,
}, },
{ {
"complexlang", &RenderConfig{ "complexlang", &RenderConfig{
@ -93,7 +94,7 @@ func TestRenderConfig_UnmarshalYAML(t *testing.T) {
}, ` }, `
gitea: gitea:
lang: testlang lang: testlang
`, `,
}, },
{ {
"complexlang2", &RenderConfig{ "complexlang2", &RenderConfig{
@ -140,8 +141,8 @@ func TestRenderConfig_UnmarshalYAML(t *testing.T) {
Icon: "table", Icon: "table",
Lang: "", Lang: "",
} }
if err := yaml.Unmarshal([]byte(tt.args), got); err != nil { if err := yaml.Unmarshal([]byte(strings.ReplaceAll(tt.args, "\t", " ")), got); err != nil {
t.Errorf("RenderConfig.UnmarshalYAML() error = %v", err) t.Errorf("RenderConfig.UnmarshalYAML() error = %v\n%q", err, tt.args)
return return
} }