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| -rw-r--r-- | spec.txt | 73 |
1 files changed, 38 insertions, 35 deletions
@@ -5964,18 +5964,22 @@ The following rules define emphasis and strong emphasis: 9. Emphasis begins with a delimiter that [can open emphasis] and ends with a delimiter that [can close emphasis], and that uses the same - character (`_` or `*`) as the opening delimiter. There must - be a nonempty sequence of inlines between the open delimiter - and the closing delimiter; these form the contents of the emphasis - inline. + character (`_` or `*`) as the opening delimiter. The + opening and closing delimiters must belong to separate + [delimiter runs]. If one of the delimiters can both + open and close emphasis, then the sum of the lengths of the + delimiter runs containing the opening and closing delimiters + must not be a multiple of 3. 10. Strong emphasis begins with a delimiter that [can open strong emphasis] and ends with a delimiter that [can close strong emphasis], and that uses the same character - (`_` or `*`) as the opening delimiter. - There must be a nonempty sequence of inlines between the open - delimiter and the closing delimiter; these form the contents of - the strong emphasis inline. + (`_` or `*`) as the opening delimiter. The + opening and closing delimiters must belong to separate + [delimiter runs]. If one of the delimiters can both open + and close strong emphasis, then the sum of the lengths of + the delimiter runs containing the opening and closing + delimiters must not be a multiple of 3. 11. A literal `*` character cannot occur at the beginning or end of `*`-delimited emphasis or `**`-delimited strong emphasis, unless it @@ -5999,9 +6003,7 @@ the following principles resolve ambiguity: so that the second begins before the first ends and ends after the first ends, the first takes precedence. Thus, for example, `*foo _bar* baz_` is parsed as `<em>foo _bar</em> baz_` rather - than `*foo <em>bar* baz</em>`. For the same reason, - `**foo*bar**` is parsed as `<em><em>foo</em>bar</em>*` - rather than `<strong>foo*bar</strong>`. + than `*foo <em>bar* baz</em>`. 16. When there are two potential emphasis or strong emphasis spans with the same closing delimiter, the shorter one (the one that @@ -6581,18 +6583,30 @@ __foo_ bar_ <p><em>foo <strong>bar</strong> baz</em></p> ```````````````````````````````` - -But note: - ```````````````````````````````` example *foo**bar**baz* . -<p><em>foo</em><em>bar</em><em>baz</em></p> +<p><em>foo<strong>bar</strong>baz</em></p> ```````````````````````````````` +Note that in the preceding case, the interpretation + +``` markdown +<p><em>foo</em><em>bar<em></em>baz</em></p> +``` + + +is precluded by the condition that a delimiter that +can both open and close (like the `*` after `foo` +cannot form emphasis if the sum of the lengths of +the delimiter runs containing the opening and +closing delimiters is a multiple of 3. + +The same condition ensures that the following +cases are all strong emphasis nested inside +emphasis, even when the interior spaces are +omitted: -The difference is that in the preceding case, the internal delimiters -[can close emphasis], while in the cases with spaces, they cannot. ```````````````````````````````` example ***foo** bar* @@ -6608,17 +6622,18 @@ The difference is that in the preceding case, the internal delimiters ```````````````````````````````` -Note, however, that in the following case we get no strong -emphasis, because the opening delimiter is closed by the first -`*` before `bar`: - ```````````````````````````````` example *foo**bar*** . -<p><em>foo</em><em>bar</em>**</p> +<p><em>foo<strong>bar</strong></em></p> ```````````````````````````````` +```````````````````````````````` example +*foo**bar*** +. +<p><em>foo<strong>bar</strong></em></p> +```````````````````````````````` Indefinite levels of nesting are possible: @@ -6712,18 +6727,13 @@ ____foo__ bar__ ```````````````````````````````` -But note: - ```````````````````````````````` example **foo*bar*baz** . -<p><em><em>foo</em>bar</em>baz**</p> +<p><strong>foo<em>bar</em>baz</strong></p> ```````````````````````````````` -The difference is that in the preceding case, the internal delimiters -[can close emphasis], while in the cases with spaces, they cannot. - ```````````````````````````````` example ***foo* bar** . @@ -7039,13 +7049,6 @@ Rule 15: ```````````````````````````````` example -**foo*bar** -. -<p><em><em>foo</em>bar</em>*</p> -```````````````````````````````` - - -```````````````````````````````` example *foo __bar *baz bim__ bam* . <p><em>foo <strong>bar *baz bim</strong> bam</em></p> |