Implementation Status

Simple Patterns

Implemented

• * — universal pattern — Igor 0.3.
• classname — member of class pattern — Igor 0.3.
• classname* — kind of class pattern — Igor 0.3.
• [predicate] — predicate pattern — Igor 0.3.
• #name — identifier pattern for accessibilityIdentifier property. — Igor 0.4.
• #integer — identifier pattern for tag property. — Igor 0.6.

Limitations

• Igor 0.4 recognizes only names as identifiers in identifier patterns. It does not recognize numeric identifiers or string identifiers.
• Igor 0.4 does not recognize underscores in #name identifier patterns.

Not Implemented

• #'string' — identifier pattern with string value.
• #"string" — identifier pattern with string value.
• :position — position pattern

Instance Patterns

• An instance pattern may include any number of simple patterns — Igor 0.4.
• The class-first rule — Igor 0.4.
• The at-most-one-class pattern rule — Igor 0.4.

Relationship Patterns

Implemented

• a b — descendant combinator (whitespace) — Igor 0.4
• a (b c) d — branch pattern — Igor 0.4
• a > b — child combinator — Igor 0.4
• a ~ b — sibling combinator — Igor 0.4

Igor Queries

Implemented

• a $b c — subject marker — Igor 0.4

Priorities

My priorities for implementing additional patterns are approximately:

1. [[:first-child|Simple Pattern#wiki-position]]
2. [[:nth-child(n)|Simple Pattern#wiki-position]]

Other patterns follow those.