smartypants Modifier

Translate plain ASCII punctuation characters into “smart” typographic punctuation HTML entities. It performs the following transformations:

• Straight quotes (" and ') into “curly” quote HTML entities
• Backticks-style quotes (``like this'') into “curly” quote HTML entities
• Two dashes (--) into an em dash.
• Three consecutive dots (...) into an ellipsis entity

conversation: |
  "What's your favorite album?" asked Lars. ``...And Justice for All'' replied
  Kirk -- who was icing his hands after a 20 minute guitar solo.

{{ conversation | smartypants }}

“What’s your favorite album?” asked Lars. “…And Justice for All” replied
Kirk — who was icing his hands after a 20 minute guitar solo.

or more precisely...

“What’s your favorite album?” asked Lars. “…And Justice for All” replied
Kirk — who was icing his hands after a 20 minute guitar solo.