bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014).

[Clément Pit--Claudel]

On 2016-12-19 11:39, Eli Zaretskii wrote:
> In "emacs -Q"?  If so, it didn't happen to me.  I tried both the Segoe
> Symbol font (which nowadays includes all the Emoji, so the Emoji font
> is not needed), and the Segoe Emoji one, and saw no slow-down.

Let me try this again, then :)

> How can an Emoji font be a fallback for the entire range of Unicode
> characters?  It's not what it's for.

It's a fallback for everything that it covers; 'unicode was just a shorthand 
for "whatever the font includes".  It's a pain to have to determine exactly 
what the font covers, especially if the font is going to get updated to support 
a broader range in the future.

For Symbola, 'unicode was the intended meaning.

Clément.

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