add tree-sitter-regex (#1362)

* add tree-sitter-regex

* adapt regex highlights from upstream

* inject regex into elixir sigil_r/2 and sigil_R/2

* generate lang-support docs

* capture interesting nodes in character-ranges

* make $.character_class captures more consistent

* fix fallthrough behavior for character classes

* capture pattern characters as 'string'

* use latest tree-sitter-regex

* set elixir regex injections as combined

* add link to upstream queries

* inject regex in rust into 'Regex::new' raw string literals

1 files changed, 7 insertions, 0 deletions

diff --git a/languages.toml b/languages.toml
index e8329fe7..3e2e7b15 100644
--- a/languages.toml
+++ b/languages.toml
@@ -530,3 +530,10 @@ file-types = ["git-rebase-todo"]
 injection-regex = "git-rebase"
 comment-token = "#"
 indent = { tab-width = 2, unit = " " }
+
+[[language]]
+name = "regex"
+scope = "source.regex"
+injection-regex = "regex"
+file-types = ["regex"]
+roots = []