verilog-directive-nest-re
verilog-directive-nest-re is a variable defined in `verilog-mode.el
'.
Its value is "\\(`else\\>\\)\\|\\(`endif\\>\\)\\|\\(`if\\>\\)\\|\\(`ifdef\\>\\)\\|\\(`ifndef\\>\\)\\|\\(`elsif\\>\\)"
- This variable may be risky if used as a file-local variable.