Support dot-prefixed predicates and MISSING keyword #46
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Restricts identifiers to not start with "." and also allows predicates to be denoted with "." as well as "#", as specified by
query.c
.See https://github.com/tree-sitter/tree-sitter/blob/9c8055765849eee39f69a8eda7d2a5aede2b2e60/lib/src/query.c#L2308 and https://github.com/emacs-tree-sitter/tree-sitter-langs/blob/b955ffbe26b3a7e931f116720efa7dee9de35174/queries/hcl/highlights.terraform-mode.scm#L13
Since tree-sitter/tree-sitter#3887, query files
support a
MISSING
keyword to match against missing nodes. This updatesthe grammar to allow for such a syntax.