makefile-makepp-rule-action-regex

makefile-makepp-rule-action-regex is a variable defined in `make-mode.el'.
Its value is

"^	[ 	]*\\(\\(?:\\(?:noecho\\|ignore[-_]error\\|[-@]+\\)[ 	]*\\)*\\)\\(\\(&\\S +\\)?\\(?:.*\\\\\n\\)*.*\\)"

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

Documentation:
Regex used to highlight makepp rule action lines in font lock mode.