fonttools/Tests/feaLib/data/spec6h_iii_1.fea

# OpenType Feature File specification, section 6.h.iii, example 1:
# Specifying Contextual Positioning with in-line single positioning rules
# http://www.adobe.com/devnet/opentype/afdko/topic_feature_file_syntax.html

languagesystem DFLT dflt;

feature test {
    pos [quoteleft quotedblleft] [Y T]' <0 0 20 0> [quoteright quotedblright];
} test;