perl--syntax-exp-intro-regexp

perl--syntax-exp-intro-regexp is a variable defined in `perl-mode.el'.
Its value is

"\\(?:\\(?:^\\|[^$@&%[:word:]]\\)\\(?:and\\|for\\(?:each\\)?\\|grep\\|if\\|map\\|not\\|or\\|print\\|split\\|un\\(?:less\\|til\\)\\|while\\)\\|[-?:.,;|&+*=!~({[]\\|\\(^\\)\\)[ 	\n]*"

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

Documentation:
Not documented as a variable.