Stop reporting redundant fragment parser error in foreign content #9809
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| <li><p>Otherwise, process the token according to the rules given in the section corresponding | ||
| to the current <span>insertion mode</span> in HTML content.</li> | ||
| <li><p>Return to the step labeled <i>loop</i>.</p></li> |
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(Rewriting this set of steps as a https://infra.spec.whatwg.org/#iteration-while "While true" could be nice.)
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Personally I don't really find "While true" any better than "loop" ... it's just as undescriptive regarding when the loop will terminate. In any case I think such a change should be done in a followup PR ... so that the diff of this clarification is minimal.
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While true with nested steps is much better than goto imo.
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Ah yes that's true ... there however aren't any nested steps here.
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Right, @annevk suggests switching from goto without nested steps to while true with nested steps.
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Right ... I think Anne meant that the real advantage of while is if you have multiple nested loops that is a loop within a loop, which as I pointed out isn't the case here.
In any case as I said I'd like to keep the changes in this commit minimal (since it fixes something that's wrong) and keep editorial changes to future PRs.
I have tested this change against the test cases from html5lib-tests. In document parsing this doesn't change any test results. In fragment parsing this fixes 7 test cases by reporting one parser error less. (That is all existing HTML parsers that pass html5lib-tests must have already implemented these steps in the order they are changed to by this commit.) The test cases where one error is reported less fall in two categories: * fragment parsing e.g. `<svg></table>` with a `tbody` HTML element as the context element => one "unexpected end tag" error is reported less (previously it was reported twice) * fragment parsing e.g. `<g></path>` with a `path` SVG element as the context element => one "found special tag while closing generic tag" error is no longer reported Fixes html5lib/html5lib-tests#173.
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I have tested this change against the test cases from html5lib-tests.
In document parsing this doesn't change any test results.
In fragment parsing this fixes 7 test cases by reporting one parser error less. (That is all existing HTML parsers that pass html5lib-tests must have already implemented these steps in the order they are changed to by this commit.)
The test cases where one error is reported less fall in two categories:
fragment parsing e.g.
<svg></table>with atbodyHTML element as the context element => one "unexpected end tag" error is reported lessfragment parsing e.g.
<g></path>with apathSVG element as the context element => one "found special tag while closing generic tag" error is no longer reportedFixes html5lib/html5lib-tests#173.
/parsing.html ( diff )