vhdl-packages-regexp

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

"\\<\\(\\(?:ieee\\|numeric_\\(?:bit\\|std\\)\\|st\\(?:andard\\|d\\(?:_logic_\\(?:1164\\|arith\\|misc\\|signed\\|textio\\|unsigned\\)\\)?\\)\\|textio\\|work\\)\\)\\>"

Documentation:
Regexp for VHDL standardized packages and libraries.