vhdl-attributes-regexp

vhdl-attributes-regexp is a variable defined in `vhdl-mode.el'.
Its value is

"\\<\\(\\(?:a\\(?:ctive\\|scending\\)\\|base\\|d\\(?:elayed\\|riving\\(?:_value\\)?\\)\\|event\\|foreign\\|high\\|i\\(?:\\(?:mag\\|nstance_nam\\)e\\)\\|l\\(?:ast_\\(?:active\\|event\\|value\\)\\|e\\(?:ft\\(?:of\\)?\\|ngth\\)\\|ow\\)\\|p\\(?:ath_name\\|os\\|red\\)\\|quiet\\|r\\(?:ange\\|everse_range\\|ight\\(?:of\\)?\\)\\|s\\(?:imple_name\\|table\\|ucc\\)\\|transaction\\|val\\(?:ue\\)?\\)\\)\\>"

Documentation:
Regexp for VHDL standardized attributes.