Parking lot for Checks to add in the future

[r12a]

These are copy-pasted from old documentation, and need triage.

• utf-8 bom overrides other declarations
• incorrect ncr for euro, or other C2 codes
• use of entities in xml
• write report: HTTP header information doesn't match language attributes on html - say this may be ok, if using http for metadata, but it's possible that the html language attributes are incorrectly set, so check that - create a test to go with it - the report should be triggered if either lang or xml:lang are present (or both)
• avoid HTML attributes with values of right and left
• if the page is in Arabic, Hebrew, Urdu, Persian, Thaana, check that it starts with dir on html or body
• check encoding supports logical order for Hebrew
• check for bidi control characters in places where markup would do
• check for over-use of dir
• check for white-space at the end of elements indicating a change in direction
• if language attributes on body but not html tags
• if language tags have hyphens, check that that is appropriate, but exclude some common usage, such as en-GB, fr-CA, etc
• if zh-CN, zh-TW etc are used, suggest zh-Hans and zh-Hant
• check for hreflang
• test for lang=""

[r12a]

utf-8 bom overrides other declarations

done in https://github.com/w3c/i18n-checker/commit/991b81476127fdd5741d5a57a28312c0a8a5ff60

[r12a]

write report: HTTP header information doesn't match language attributes on html - say this may be ok, if using http for metadata, but it's possible that the html language attributes are incorrectly set, so check that - create a test to go with it - the report should be triggered if either lang or xml:lang are present (or both)

Actually implemented most of this, then changed my mind and removed it, because it gives the wrong impression that http and html-lang are the same thing, and there may well be situations where the intended audience (http) speaks one language, but the best default text-processing language (html-lang) are different.

[r12a]

test for lang=""

not sure that this is an issue any more

[r12a]

i made new issues for the remainder, so closing this now