Introducing buffering in TagHelperOutput.PreContent, Content, PostContent

[sornaks]

#296. Looking for comments around naming.

[ghost]

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[NTaylorMullen]

throw this in the previous if statement as an ||

[dougbu]

"that is appended to the content" -> "to be appended" (use consistent wording)

[NTaylorMullen]

⌚ for #312 (comment)

[dougbu]

teensy nit: in future don't remove the trailing initializer commas. you're more likely to get nits to add them.

[dougbu]

⌚
in future please do not squash commits before reviewers are done

[NTaylorMullen]

once @dougbu is happy.

[rynowak]

should we skip adding the value if it's null? would be consistent with Append(TagHelperContent)

[sornaks]

Updated..

[dougbu]

!string.IsNullOrEmpty() (almost-always weird to just null-check a string)

[sornaks]

But why would you want to ignore string.Empty?

[dougbu]

with !string.IsNullOrEmpty() fix

[dougbu]

[sornaks]

Checked in. Thanks guys! bd9d57d