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Significance of the ordering of tagged fields in header lines #571

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Unaimend opened this issue May 23, 2021 · 2 comments · Fixed by #572
Closed

Significance of the ordering of tagged fields in header lines #571

Unaimend opened this issue May 23, 2021 · 2 comments · Fixed by #572
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@Unaimend
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So I'd like to know if the header tags in some predefined order.
According to my understanding this would be a valid headerline.
@HD VN:1.6 SO:coordinate
But when I switch around the tags, would this still be valid?
@HD SO:coordinate VN:1.6

@jmarshall
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The order of the header tagged fields is not significant. Whatever order they appear in, the meaning is the same; and any order for the tagged fields is valid.

The specification (§1.3, “The header section”) currently does not say anything about this (hence you can assume that this means no particular ordering is invalid). I have some upcoming clarifications to make in this section, so I'll also add some wording to make this insignificance of the ordering explicit.

@jmarshall jmarshall added the sam label May 23, 2021
@jmarshall jmarshall self-assigned this May 23, 2021
@jmarshall jmarshall changed the title Question on the Format Significance of the ordering of tagged fields in header lines May 23, 2021
@Unaimend
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Thank you for the clarificarion

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