Re: [csswg-drafts] [css-fonts] Proposal to extend CSS font-optical-sizing (#4430)

@Lorp 

```
font-optical-sizing: px;       /* get font-size in px, use as opsz */
font-optical-sizing: pt;       /* get font-size in pt, use as opsz */
```
If I understand correctly, what these options do is redefine the unit value of the opsz variations axis. I can imagine use cases, but I remain concerned that we've already got massive confusion over the actual unit value of the axis and how it should be interpreted for `auto`, and introducing CSS px and pt redefinition of the axis units confuses things further. I also think that this comment 

`font-optical-sizing: auto;     /* get font-size in pt or px, use as opsz */`

is possibly unhelpful, as it suggests — in light of the following — that the auto size can be either CSS px or pt and that those values can be used as opsz instance values, which is exactly not what we want for `auto`.



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Received on Wednesday, 23 September 2020 20:44:41 UTC