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title date author mainfont geometry output mainfontoptions
Feature Variations: Conditon Negations
February 5, 2024
Skef Iterum, Adobe Inc.
LibertinusSerif-Regular.otf
margin=1.4in
pdf_document
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+fancy_lists
BoldFont=LibertinusSerif-Bold.otf
ItalicFont=LibertinusSerif-Italic.otf
BoldItalicFont=LibertinusSerif-BoldItalic.otf

Condition Negation Proposal

The first change is that this sub-section is inserted after the current "Condition Table Format 1: Font Variation Axis Range":

Condition Table Format 2: Negated Font Variation Axis Range

The fields in this table after Format are identical to the fields for format 1, and are interpreted the same way. The difference between the formats is that when ever a format 1 condition is true the format 2 condition is false, and vice versa.

\footnotesize

Type Name Description

uint16 Format Format = 2

uint16 AxisIndex Same as in format 1

F2DOT14 FilterRangeMinValue Same as in format 1

F2DOT14 FilterRangeMaxValue Same as in format 1

\normalsize

The second change is that the Condition Value table format is changed from 2 (as it was when added to the working draft) to 3.

Then this is added after that sub-section:

Condition Table Format 4: Negated Condition Value

The fields in this table after Format are identical to the fields for format 3, and are interpreted the same way. The difference between the formats is that when ever a format 3 condition is true the format 4 condition is false, and vice versa.

\footnotesize

Type Name Description

uint16 Format Format = 4

int16 Default Same as in format 3

uint16 DeltaSetOuterIndex Same as in format 3

uint16 DeltaSetInnerIndex Same as in format 3

\normalsize