verilog-optional-signed-range-re
verilog-optional-signed-range-re is a variable defined in `verilog-mode.el
'.
Its value is "\\s-*\\(\\<\\(reg\\|wire\\)\\>\\s-*\\)?\\(\\\\s-*\\)?\\(\\(\\[[^]]*\\]\\s-*\\)+\\)?"
- This variable may be risky if used as a file-local variable.