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Fix markdown preview $$ support (#31514)

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close #31481

currently `$$A + B$$ test` will ignore text after $$ block

test text

![圖片](https://github.com/go-gitea/gitea/assets/30816317/39b2974b-c0b6-48a0-87d0-5f4a13615eed)

before fix

![圖片](https://github.com/go-gitea/gitea/assets/30816317/15469e4c-474d-4128-b46f-d6cadaafbd68)

after fix

![圖片](https://github.com/go-gitea/gitea/assets/30816317/c1025eef-177f-4ade-988f-510e7039f3f9)

github display

![圖片](https://github.com/go-gitea/gitea/assets/30816317/97cd1e10-ac94-4899-86d8-8e359ef1d694)
This commit is contained in:
charles
2024-06-30 07:23:47 +08:00
committed by GitHub
parent 91745ae46f
commit f0033051d5
6 changed files with 79 additions and 6 deletions
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30
modules/markup/markdown/math/inline_parser.go
View File

@ -21,11 +21,20 @@ var defaultInlineDollarParser = &inlineParser{
end: []byte{'$'},
}
var defaultDualDollarParser = &inlineParser{
start: []byte{'$', '$'},
end: []byte{'$', '$'},
}
// NewInlineDollarParser returns a new inline parser
func NewInlineDollarParser() parser.InlineParser {
return defaultInlineDollarParser
}
func NewInlineDualDollarParser() parser.InlineParser {
return defaultDualDollarParser
}
var defaultInlineBracketParser = &inlineParser{
start: []byte{'\\', '('},
end: []byte{'\\', ')'},
@ -38,7 +47,7 @@ func NewInlineBracketParser() parser.InlineParser {
// Trigger triggers this parser on $ or \
func (parser *inlineParser) Trigger() []byte {
return parser.start[0:1]
return parser.start
}
func isPunctuation(b byte) bool {
@ -88,7 +97,11 @@ func (parser *inlineParser) Parse(parent ast.Node, block text.Reader, pc parser.
break
}
suceedingCharacter := line[pos]
if !isPunctuation(suceedingCharacter) && !(suceedingCharacter == ' ') && !isBracket(suceedingCharacter) {
// check valid ending character
if !isPunctuation(suceedingCharacter) &&
!(suceedingCharacter == ' ') &&
!(suceedingCharacter == '\n') &&
!isBracket(suceedingCharacter) {
return nil
}
if line[ender-1] != '\\' {
@ -101,12 +114,21 @@ func (parser *inlineParser) Parse(parent ast.Node, block text.Reader, pc parser.
block.Advance(opener)
_, pos := block.Position()
node := NewInline()
var node ast.Node
if parser == defaultDualDollarParser {
node = NewInlineBlock()
} else {
node = NewInline()
}
segment := pos.WithStop(pos.Start + ender - opener)
node.AppendChild(node, ast.NewRawTextSegment(segment))
block.Advance(ender - opener + len(parser.end))
trimBlock(node, block)
if parser == defaultDualDollarParser {
trimBlock(&(node.(*InlineBlock)).Inline, block)
} else {
trimBlock(node.(*Inline), block)
}
return node
}