vhdl-begin-bwd-re

vhdl-begin-bwd-re is a variable defined in `vhdl-mode.el'.
Its value is

"\\b\\(is\\|begin\\|block\\|component\\|generate\\|then\\|else\\|loop\\|process\\|procedural\\(\\s-+body\\)?\\|units\\|use\\|record\\|protected\\(\\s-+body\\)?\\|for\\)\\b[^_]"

• This variable may be risky if used as a file-local variable.

Documentation:
A regular expression for searching backward that matches all known
"begin" keywords.