Add additional keywords

Adds syntax highlighting for certain builtin keywords

Author: darrylhebbes

pine-script-mode.el

@@ -53,6 +53,8 @@
 (defvar pine-script-font-lock-keywords
   `(("$$(\\s *\\w+\\s *)" (0 font-lock-function-name-face t))
     ("$$\\[\\s *\\w+\\s *\\]" (0 font-lock-function-name-face t))
+    (,(regexp-opt '("and" "else" "false" "for" "if" "not" "or" "true" "var" "varip") `words)
+       (0 font-lock-keyword-face))
     (,(regexp-opt '("accdist" "adjustment.dividends" "adjustment.none" "adjustment.splits"
                     "alert.freq_all" "alert.freq_once_per_bar" "alert.freq_once_per_bar_close"
                     "bar_index" "barmerge.gaps_off" "barmerge.gaps_on" "barmerge.lookahead_off"