Canonical block names: spaces vs. underscores

Mathias Bynens mathias at
Thu May 26 08:44:51 CDT 2016

> On 26 May 2016, at 10:17, Mathias Bynens <mathias at> wrote:
> `Blocks.txt` ( lists blocks such as `Cyrillic Supplement`.
> However, `PropertyValueAliases.txt` ( refers to this block as `Cyrillic_Supplement`, with an underscore instead of a space.
> Which is it?
> If proper canonical block names use spaces instead of underscores, why doesn’t `PropertyValueAliases.txt` reflect that? 
> If proper canonical block names use underscores instead of spaces, why doesn’t `Blocks.txt` reflect that?

Another example: `Blocks.txt` has `Superscripts and Subscripts`, whereas `PropertyValueAliases.txt` has `Superscripts_And_Subscripts`. Note that in addition to the underscores, the case of the `A` changed as well. Which is the canonical name?

The same goes for other blocks with “and” in the name, e.g. `Miscellaneous Symbols and Pictographs`, `Supplemental Symbols and Pictographs`, etc.

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