diff options
Diffstat (limited to 'vendor/github.com/gomarkdown/markdown/parser/parser.go')
| -rw-r--r-- | vendor/github.com/gomarkdown/markdown/parser/parser.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/vendor/github.com/gomarkdown/markdown/parser/parser.go b/vendor/github.com/gomarkdown/markdown/parser/parser.go index c7302dfd..7712a29f 100644 --- a/vendor/github.com/gomarkdown/markdown/parser/parser.go +++ b/vendor/github.com/gomarkdown/markdown/parser/parser.go @@ -6,6 +6,7 @@ package parser import ( "bytes" "fmt" + "strconv" "strings" "unicode/utf8" @@ -113,6 +114,10 @@ type Parser struct { attr *ast.Attribute includeStack *incStack + + // collect headings where we auto-generated id so that we can + // ensure they are unique at the end + allHeadingsWithAutoID []*ast.Heading } // New creates a markdown parser with CommonExtensions. @@ -282,6 +287,25 @@ func (p *Parser) Parse(input []byte) ast.Node { if p.Opts.Flags&SkipFootnoteList == 0 { p.parseRefsToAST() } + + // ensure HeadingIDs generated with AutoHeadingIDs are unique + // this is delayed here (as opposed to done when we create the id) + // so that we can preserve more original ids when there are conflicts + taken := map[string]bool{} + for _, h := range p.allHeadingsWithAutoID { + id := h.HeadingID + if id == "" { + continue + } + n := 0 + for taken[id] { + n++ + id = h.HeadingID + "-" + strconv.Itoa(n) + } + h.HeadingID = id + taken[id] = true + } + return p.Doc } |