Re: [PATCH 2/2] fonts: Increase the Em size to fix a build failure with freetype 2.8.1

[Michael Stefaniuc]

On 09/28/2017 06:53 AM, Dmitry Timoshkov wrote:
> Michael Stefaniuc  wrote:
> > -UnderlinePosition: -100
> > -UnderlineWidth: 50
> > -Ascent: 11
> > -Descent: 2
> > +UnderlinePosition: -15753.8
> > +UnderlineWidth: 7876.92
> > +Ascent: 1733
> > +Descent: 315
> > +InvalidEm: 0
> >  LayerCount: 2
> >  Layer: 0 0 "Back" 1
> >  Layer: 1 0 "Fore" 0
> > @@ -21,7 +22,7 @@ OS2_UseTypoMetrics: 0
> >  PfmFamily: 49
> >  TTFWeight: 400
> >  TTFWidth: 5
> > -LineGap: 1
> > +LineGap: 158
> >  VLineGap: 0
> >  Panose: 2 0 6 9 0 0 0 0 0 0
> >  OS2TypoAscent: 0
> > @@ -56,770 +57,770 @@ BeginChars: 65536 498
> >
> > StartChar: space
> >  Encoding: 32 32 0
> > -Width: 8
> > +Width: 1260
> >  Flags: W
> >  LayerCount: 2
> >  EndChar
> >
> > StartChar: exclam
> >  Encoding: 33 33 1
> > -Width: 8
> > +Width: 1260
> >  Flags: W
> >  LayerCount: 2
> >  EndChar
>
> Did you test that after this patch font and glyph metrics still stay the same?

To find the relevant changes I have verified that the numbers increased
by the factor of 2048 divided by the old Em size (11 or 13 or 15). Of
course as 11, 13, 15 aren't factors of 2048 there are rounding errors.

But it doesn't matter as:
a) Those are bitmap only fonts.
b) Only the *.fon files are installed but not the corresponding *.ttf files.
c) The generated *.fon files are bit by bit identical (sha1sum) before
and after this commit.

bye
    michael