Fix indentation on quoted scalars. Closes #5.

content/article.pug

@@ -42,10 +42,10 @@ h3.is-3#flow-scalars-single Single-quoted
  .pre-header YAML
  pre.
  #[span(style="color:#268bd2") example:] #[span.syntax-quote ']Several lines of text,#[span.whitespace \n]
- containing #[span.syntax-escape '']single quotes#[span.syntax-escape '']. Escapes (like \n) don#[span.syntax-escape '']t do anything.#[span.whitespace \n]
- #[span.whitespace \n]
- Newlines can be added by leaving a blank line.#[span.whitespace \n]
- #[span.whitespace ··]Leading whitespace on lines is ignored.#[span.syntax-quote ']#[span.whitespace \n]
+ #[span.whitespace ··]containing #[span.syntax-escape '']single quotes#[span.syntax-escape '']. Escapes (like \n) don#[span.syntax-escape '']t do anything.#[span.whitespace \n]
+ #[span.whitespace ··]#[span.whitespace \n]
+ #[span.whitespace ··]Newlines can be added by leaving a blank line.#[span.whitespace \n]
+ #[span.whitespace ····]Leading whitespace on lines is ignored.#[span.syntax-quote ']#[span.whitespace \n]
  .column.is-one-half
  .pre-header Result
  pre.pre-wrap.
@@ -57,12 +57,12 @@ h3.is-3#flow-scalars-double Double-quoted
  .pre-header YAML
  pre.
  #[span.syntax-keyword example:] #[span.syntax-quote "]Several lines of text,#[span.whitespace \n]
- containing #[span.syntax-escape \"]double quotes#[span.syntax-escape \"]. Escapes (like #[span.syntax-escape \\]n) work.#[span.syntax-escape \n]In addition,#[span.whitespace \n]
- newlines can be esc#[span.syntax-escape \]#[span.whitespace \n]
- aped to prevent them from being converted to a space.#[span.whitespace \n]
- #[span.whitespace \n]
- Newlines can also be added by leaving a blank line.#[span.whitespace \n]
- #[span.whitespace ··]Leading whitespace on lines is ignored.#[span.syntax-quote "]#[span.whitespace \n]
+ #[span.whitespace ··]containing #[span.syntax-escape \"]double quotes#[span.syntax-escape \"]. Escapes (like #[span.syntax-escape \\]n) work.#[span.syntax-escape \n]In addition,#[span.whitespace \n]
+ #[span.whitespace ··]newlines can be esc#[span.syntax-escape \]#[span.whitespace \n]
+ #[span.whitespace ··]aped to prevent them from being converted to a space.#[span.whitespace \n]
+ #[span.whitespace ··]#[span.whitespace \n]
+ #[span.whitespace ··]Newlines can also be added by leaving a blank line.#[span.whitespace \n]
+ #[span.whitespace ····]Leading whitespace on lines is ignored.#[span.syntax-quote "]#[span.whitespace \n]
  .column.is-one-half
  .pre-header Result
  pre.pre-wrap.