Fixes

- Switch to using PCRE for ts predicate matching
- Fix/use shebang hl for ruby and bash grammars

include/ts.h

@@ -2,10 +2,14 @@
 #define TS_H
 
 #include "./editor.h"
+#include <pcre2.h>
 
 #define HEX(s) (static_cast<uint32_t>(std::stoul(s, nullptr, 16)))
 
+extern std::unordered_map<std::string, pcre2_code *> regex_cache;
+
 TSQuery *load_query(const char *query_path, Editor *editor);
 void ts_collect_spans(Editor *editor);
+void clear_regex_cache();
 
 #endif