Panic

[m8rge]

• [x] goldmark is fully compliant with the CommonMark. Before submitting issue, you must read CommonMark spec and confirm your output is different from CommonMark online demo.
  • [x] Extensions(Autolink without < >, Table, etc) are not part of CommonMark spec. You should confirm your output is different from other official renderers correspond with an extension.
• [x] goldmark is not dedicated for Hugo. If you are Hugo user and your issue was raised by your experience in Hugo, you should consider create issue at Hugo repository at first .

Please answer the following before submitting your issue:

1. What version of goldmark are you using? : 1.7.1
2. What version of Go are you using? : go1.22.1
3. What operating system and processor architecture are you using? : apple M1, arm64
4. What did you do? :

   goldmark.New(
       goldmark.WithExtensions(extension.Strikethrough),
       goldmark.WithRenderer(
           renderer.NewRenderer(renderer.WithNodeRenderers(
               util.Prioritized(newNotificationRenderer(), 500),
           )),
       ),
   )
   var buf strings.Builder
   if err := md.Convert([]byte(markdown), &buf); err != nil {
       return "", err
   }

   > [[api_infra_prod] [y] a](https://geeksocket.in/some-long-link-here)
   > [[api_infra_prod] [y] b](https://geeksocket.in/some-long-link-here)
   > [[api_infra_prod] [y] c](https://geeksocket.in/some-long-link-here)
   > [[api_infra_prod] [y] d](https://geeksocket.in/some-long-link-here)

5. What did you expect to see? : valid output
6. What did you see instead? : panic

   goroutine 234998 [running]:
   github.com/yuin/goldmark/renderer.(*renderer).Render.func2({0x3164c30, 0xc001e2cdd0}, 0x1)
   github.com/yuin/goldmark@v1.4.13/renderer/renderer.go:164 +0xd6
   github.com/yuin/goldmark/ast.walkHelper({0x3164c30, 0xc001e2cdd0}, 0xc005e79850)
   github.com/yuin/goldmark@v1.4.13/ast/ast.go:492 +0x2e
   github.com/yuin/goldmark/ast.walkHelper({0x3163910, 0xc0028fbd60}, 0xc005e79850)
   github.com/yuin/goldmark@v1.4.13/ast/ast.go:498 +0x85
   github.com/yuin/goldmark/ast.walkHelper({0x3164330, 0xc009670900}, 0xc005e79850)
   github.com/yuin/goldmark@v1.4.13/ast/ast.go:498 +0x85
   github.com/yuin/goldmark/ast.walkHelper({0x3163fd0, 0xc009670880}, 0xc005e79850)
   github.com/yuin/goldmark@v1.4.13/ast/ast.go:498 +0x85
   github.com/yuin/goldmark/ast.walkHelper({0x3164570, 0xc0097a4120}, 0xc005e79850)
   github.com/yuin/goldmark@v1.4.13/ast/ast.go:498 +0x85
   github.com/yuin/goldmark/ast.Walk(...)
   github.com/yuin/goldmark@v1.4.13/ast/ast.go:487
   github.com/yuin/goldmark/renderer.(*renderer).Render(0xc006c886e0, {0x31280c0, 0xc00592fb40}, {0xc0094c4c00, 0x5ac, 0x600}, {0x3164570, 0xc0097a4120})
   github.com/yuin/goldmark@v1.4.13/renderer/renderer.go:161 +0x230
   github.com/yuin/goldmark.(*markdown).Convert(0xc0094e8b00, {0xc0094c4c00, 0x5ac, 0x600}, {0x31280c0, 0xc00592fb40}, {0x0, 0x0, 0x0})
   github.com/yuin/goldmark@v1.4.13/markdown.go:117 +0x106
   ...

7. Did you confirm your output is different from CommonMark online demo or other official renderer correspond with an extension?: YES

[yuin]

Works as expected. This is a not runtime error, but coding error. You forgot add node kind for your extension.

[m8rge]

Hi yuin,

Thanks for reply!

In a fact, it doesn't matter register extension or not, panic is here. I can initiate parser like this: md := goldmark.New() and panic will be thrown.