Very slow when parsing long strings of dashes inside code blocks

[Nemo157]

Pulled out of an example containing a multipart/form-data upload. As more dashes are added the rendering seems to take exponentially more time.

→ time node -e 'require("render-readme")("\`\`\`\n------------\n\`\`\`")'                                      
node -e   0.48s user 0.07s system 102% cpu 0.541 total
→ time node -e 'require("render-readme")("\`\`\`\n------------------------------\n\`\`\`")'
node -e   60.09s user 1.42s system 105% cpu 58.180 total

[Nemo157]

Just tested against markdown-it to make sure it is related to render-readme specifically:

→ time node -e 'require("markdown-it")().render("\`\`\`\n------------------------------\n\`\`\`")'             
node -e   0.11s user 0.02s system 96% cpu 0.137 total

[rlidwka]

Thanks for reporting it. This seems to be an issue in highlight.js, I opened a ticket here.

[rlidwka]

This bug should be fixed now.

[Nemo157]

Awesome, thanks 😄