pandoc/test/command/3511.md

```
% pandoc -t native
- a
  - b
    - c

-     code

1000. one

    not continuation
^D
[BulletList
 [[Plain [Str "a"]
  ,BulletList
   [[Plain [Str "b"]
    ,BulletList
     [[Plain [Str "c"]]]]]]
 ,[CodeBlock ("",[],[]) "code"]]
,OrderedList (1000,Decimal,Period)
 [[Plain [Str "one"]]]
,CodeBlock ("",[],[]) "not continuation"]
```

```
% pandoc -t native -f markdown+four_space_rule
- a
  - b
    - c

-     not code

1000. one

    continuation
^D
[BulletList
 [[Plain [Str "a"]]
 ,[Plain [Str "b"]
  ,BulletList
   [[Plain [Str "c"]]]]
 ,[CodeBlock ("",[],[]) "not code"]]
,OrderedList (1000,Decimal,Period)
 [[Para [Str "one"]
  ,Para [Str "continuation"]]]]
```
Markdown reader: use CommonMark rules for list item nesting. Closes #3511. Previously pandoc used the four-space rule: continuation paragraphs, sublists, and other block level content had to be indented 4 spaces. Now the indentation required is determined by the first line of the list item: to be included in the list item, blocks must be indented to the level of the first non-space content after the list marker. Exception: if are 5 or more spaces after the list marker, then the content is interpreted as an indented code block, and continuation paragraphs must be indented two spaces beyond the end of the list marker. See the CommonMark spec for more details and examples. Documents that adhere to the four-space rule should, in most cases, be parsed the same way by the new rules. Here are some examples of texts that will be parsed differently: - a - b will be parsed as a list item with a sublist; under the four-space rule, it would be a list with two items. - a code Here we have an indented code block under the list item, even though it is only indented six spaces from the margin, because it is four spaces past the point where a continuation paragraph could begin. With the four-space rule, this would be a regular paragraph rather than a code block. - a code Here the code block will start with two spaces, whereas under the four-space rule, it would start with `code`. With the four-space rule, indented code under a list item always must be indented eight spaces from the margin, while the new rules require only that it be indented four spaces from the beginning of the first non-space text after the list marker (here, `a`). This change was motivated by a slew of bug reports from people who expected lists to work differently (#3125, #2367, #2575, #2210, #1990, #1137, #744, #172, #137, #128) and by the growing prevalance of CommonMark (now used by GitHub, for example). Users who want to use the old rules can select the `four_space_rule` extension. * Added `four_space_rule` extension. * Added `Ext_four_space_rule` to `Extensions`. * `Parsing` now exports `gobbleAtMostSpaces`, and the type of `gobbleSpaces` has been changed so that a `ReaderOptions` parameter is not needed. 2017-08-19 19:56:15 +02:00			```
			`% pandoc -t native`
			`- a`
			`- b`
			`- c`

			`- code`

			`1000. one`

			`not continuation`
			`^D`
			`[BulletList`
			`[[Plain [Str "a"]`
			`,BulletList`
			`[[Plain [Str "b"]`
			`,BulletList`
			`[[Plain [Str "c"]]]]]]`
			`,[CodeBlock ("",[],[]) "code"]]`
			`,OrderedList (1000,Decimal,Period)`
			`[[Plain [Str "one"]]]`
			`,CodeBlock ("",[],[]) "not continuation"]`
			```

			```
			`% pandoc -t native -f markdown+four_space_rule`
			`- a`
			`- b`
			`- c`

			`- not code`

			`1000. one`

			`continuation`
			`^D`
			`[BulletList`
			`[[Plain [Str "a"]]`
			`,[Plain [Str "b"]`
			`,BulletList`
			`[[Plain [Str "c"]]]]`
			`,[CodeBlock ("",[],[]) "not code"]]`
			`,OrderedList (1000,Decimal,Period)`
			`[[Para [Str "one"]`
			`,Para [Str "continuation"]]]]`
			```