Re: Why is the default weight FC_WEIGHT_MEDIUM?

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Akira TAGOH wrote:
Hi,

That sounds reasonable to me so that the normal weight is also default in CSS.
Does anyone else have any objection about this change? one concern is

I wondered about this too once (and subsequently adjusted my config), so I think changing it is a sensible thing to do. As most fonts are not available with weights 100 *and* 80 anyway it should not affect a lot of people.

if there are anyone who are relying on current behavior, this change
will breaks it despite you get a fix.

I don't think there is a lot of potential for trouble here. The change will only apply after target="pattern" rules, so if users have set defaults in the pattern before, this will not be affected. Also, generic matches will not be affected because they typically land on fallbacks from the 'family' property and 'weight' has lower priority. So it's mainly about fonts that are available in 80 and 100, and chances are that people using them see the current behavior as a bug, too...

Raimund






On Fri, Oct 25, 2013 at 12:42 AM, John Flatness <john@xxxxxxxxxxxxxx> wrote:
I was recently trying to run down a quirk in font selection, and stumbled
upon Fontconfig's pattern defaults. In particular, the one that was causing
my issue and surprise was the default for weight, which is defined as
FC_WEIGHT_MEDIUM, or 100.

This default seems to have been the same from the initial commit, and that
time there were only defined constants for light (then defined as zero),
medium, demi-bold, bold, and black weights.

By now, should the default weight not be FC_WEIGHT_NORMAL or
FC_WEIGHT_REGULAR, both of which are defined as 80? The specific context I
noticed this in was a font family that ships both regular and medium
weights, and without additional specification, fontconfig selects the
surprisingly-heavy medium weight.

I'm aware I can provide my own configuration to handle my specific case, but
I'm surprised that the default here is actually heavier than the "regular"
and "normal" weight. I imagine there's some consideration here that I'm
simply not aware of, but I can't think of what that might be.

--
John Flatness

(P.S.: I tried to send this message earlier, and it seemed to get eaten
somewhere along the line. Apologies if this is a duplicate for anyone.)
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